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MAX9140EXK+T ,40ns, Low-Power, 3V/5V, Rail-to-Rail Single-Supply ComparatorsApplicationsMAX9144EUD 14 TSSOP —● Line ReceiversMAX9144ESD 14 SO —● Battery-Powered Systems● Thres ..
MAX9140EXK+T ,40ns, Low-Power, 3V/5V, Rail-to-Rail Single-Supply ComparatorsFeatures● Fast, 40ns Propagation Delay (10mV Overdrive)The MAX9140/MAX9141 are single and the MAX91 ..
MAX9140EXK-T ,40ns, Low-Power, 3V/5V, Rail-to-Rail Single-Supply ComparatorsApplicationsMAX9141EKA-T -40°C to +85°C 8 SOT23-8 AAFDLine ReceiversMAX9141ESA -40°C to +85°C 8 SO ..
MAX9142ESA ,40ns / Low-Power / 3V/5V / Rail-to-Rail Single-Supply ComparatorsApplicationsMAX9141EKA-T -40°C to +85°C 8 SOT23-8 AAFDLine ReceiversMAX9141ESA -40°C to +85°C 8 SO ..
MAX9142ESA+T ,40ns, Low-Power, 3V/5V, Rail-to-Rail Single-Supply Comparatorsfeatures latch enable and device shutdown. These devices ● Rail-to-Rail Input Voltage Rangecombine ..
MB88344 ,8-Bit D/A Converter with Operational Amplifier Output BuffersFUJITSU SEMICONDUCTORDS04-13505-3EDATA SHEETLINEAR IC8-Bit D/A Converter with Operational Amplifier ..
MB88344 ,8-Bit D/A Converter with Operational Amplifier Output BuffersFUJITSU SEMICONDUCTORDS04-13505-3EDATA SHEETLINEAR IC8-Bit D/A Converter with Operational Amplifier ..
MB88344 ,8-Bit D/A Converter with Operational Amplifier Output BuffersFUJITSU SEMICONDUCTORDS04-13505-3EDATA SHEETLINEAR IC8-Bit D/A Converter with Operational Amplifier ..
MB88345 ,D/A Converter for Digital Tuning (24-channel, 8-bit, on-chip OP amp)FUJITSU SEMICONDUCTORDS04-13508-2EDATA SHEETLinear IC ConverterCMOSD/A Converter for Digital Tuni ..
MB88345PF ,D/A Converter for Digital Tuning (24-channel, 8-bit, on-chip OP amp)FEATURES• Ultra-low power consumption (1.1 mW/ch : typical) • Compact space-saving package (QFP-32 ..
MB88346B ,R-2R TYPE 8-BIT D/A CONVERTER WITH OPERATIONAL AMPLIFIER OUTPUT BUFFERSFUJITSU SEMICONDUCTORDS04-13501-2EDATA SHEETLINEAR ICR-2R TYPE 8-BIT D/A CONVERTER WITHOPERATIONAL ..
MAX9140AAUK+T-MAX9140AAXK+T-MAX9140EUK-MAX9140EUK+T-MAX9140EXK+T-MAX9142ESA+T
40ns, Low-Power, 3V/5V, Rail-to-Rail Single-Supply Comparators
General DescriptionThe MAX9140/MAX9141 are single and the MAX9142/
MAX9144 are dual/quad high-speed comparators optimized
for systems powered from a 3V or 5V supply. The MAX9141
features latch enable and device shutdown. These devices
combine high speed, low power, and rail-to-rail inputs.
Propagation delay is 40ns, while supply current is only 150μA per comparator.
The input common-mode range of the devices extends beyond
both power-supply rails. The outputs pull to within 0.3V of
either supply rail without external pullup circuitry, making these
devices ideal for interface with both CMOS and TTL logic. All
input and output pins can tolerate a continuous short-circuit
fault condition to either rail. Internal hysteresis ensures clean
output switching, even with slow-moving input signals.
The devices are higher-speed, lower-power, and lower-
cost upgrades to industry-standard comparators MAX941/
MAX942/MAX944.
The MAX9140 are offered in tiny 5-pin SC70 and SOT23
packages. The MAX9141 and MAX9142 are available in
8-pin SOT23 and SO packages, while the MAX9144 is
available in both 14-pin SO and TSSOP packages.
Applications●Line Receivers●Battery-Powered Systems●Threshold Detectors/Discriminators●3V/5V Systems●Zero-Crossing Detectors●Sampling Circuits
Features●Fast, 40ns Propagation Delay (10mV Overdrive)●Low Power • 150μA Supply Current Per Comparator (3V)●Optimized for 3V and 5V Applications●Rail-to-Rail Input Voltage Range●Low, 500μV Offset Voltage●Internal Hysteresis for Clean Switching●Outputs Swing 300mV of Power Rails●CMOS/TTL-Compatible Outputs●Output Latch (MAX9141 Only)●Shutdown Function (MAX9141 Only)●Available in SC70 and SOT23 Packages
Note: All E-grade devices are specified over the -40°C to +85°C operating temperature range. All A-grade devices are specified
over the -40°C to +125°C operating temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
-Denotes a package containing lead(Pb).
T = Tape and reel.
PART*PIN-PACKAGETOP MARK
MAX9140AAUK+T5 SOT23+AFEJ
MAX9140AAXK+T5 SC70+ASW
MAX9140EXK-T5 SC70ACC
MAX9140EUK-T5 SOT23ADQP
MAX9141EKA-T8 SOT23AAFD
MAX9141ESA8 SO—
MAX9142EKA-T8 SOT23AAFE
MAX9142ESA8 SO—
MAX9144EUD14 TSSOP—
MAX9144ESD14 SO—
N.C.
OUT
GNDLE
SHDNIN-
IN+
VCCVCC
VCC
SOT23/SOOUTB
INB-
INB+GND
INA+
INA-
OUTA
SOT23/SOOUTD
IND-
IND+
GND
INA+
INA-
OUTA
INC+
INC-
OUTCOUTB
INB-
INB+
TSSOP/SOTOP VIEWDC
GND
IN-IN+5VCCOUT
SC70/SOT234
MAX9142MAX9141
MAX9144
MAX9140
MAX9140/MAX9141/
MAX9142/MAX9144
40ns, Low-Power, 3V/5V, Rail-to-Rail
Single-Supply Comparators
Pin Conigurations
Ordering Information
Power-Supply Ranges
Supply Voltage (VCC to GND) ...........................................+6V
IN+, IN- to GND ....................................-0.3V to (VCC + 0.3V)
LE Input Voltage (MAX9141 only) ........-0.3V to (VCC + 0.3V)
SHDN Input Voltage (MAX9141 only) ..-0.3V to (VCC + 0.3V)
Current into Input Pins .....................................................±20mA
Input/Output Short-Circuit Duration to
VCC or GND ..........................................................Continuous
Continuous Power Dissipation (TA = +70°C)
5-Pin SC70 (derate 3.1mW/°C above +70°C) .............247mW
5-Pin SOT23 (derate 7.1mW/°C above +70°C) ..........571mW
8-Pin SOT23 (derate 9.1mW/°C above +70°C) ..........727mW
8-Pin SO (derate 5.9mW/°C above +70°C) ..............470.6mW
14-Pin TSSOP (derate 9.1mW/°C above +70°C) ........727mW
14-Pin SO (derate 8.33mW/°C above +70°C) ..........666.7mW
Operating Temperature Range
E grade ...........................................................-40°C to +85°C
A grade .........................................................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
(VCC = 5V, VCM = 0V, SHDN = LE = VCC (MAX9141 only), CL = 15pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are
at TA = +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSOperating Supply VoltageVCC(Note 2)2.75.5V
Input Voltage RangeVCMR(Note 3)-0.2VCC +
0.2V
Input Offset VoltageVOS(Note 4)
TA = +25°C0.52.0TA = -40°C to +85°C4.5
MAX9140AA_ _6.0
Input HysteresisVHYST(Note 5)1.5mV
Input Bias CurrentIB(Note 6)TA = -40°C to +85°C90320nAMAX9140AA_ _350
Input Offset CurrentIOSTA = -40°C to +85°C8120nAMAX9140AA_ _140
Common-Mode Rejection RatioCMRRVCC = 5.5V
(Note 7)
TA = -40°C to +85°C80800µV/VMAX9140AA_ _850
Power-Supply Rejection RatioPSRR2.7V ≤ VCC ≤
5.5V
TA = -40°C to +85°C80750µV/VMAX9140AA_ _800
Output High VoltageVOHISOURCE =
4mA
TA = -40°C to +85°CVCC -
VCC -
0.3V
MAX9140AA_ _VCC - 0.47
Output Low VoltageVOLISINK = 4mATA = -40°C to +85°C0.30.425VMAX9140AA_ _0.45
Output Leakage CurrentILEAKSHDN = GND, MAX9141 only (Note 8)0.041µA
MAX9140/MAX9141/
MAX9142/MAX9144
40ns, Low-Power, 3V/5V, Rail-to-Rail
Single-Supply Comparators
Absolute Maximum RatingsStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
(VCC = 5V, VCM = 0V, SHDN = LE = VCC (MAX9141 only), CL = 15pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are
at TA = +25°C.) (Note 1)
Note 1: All devices are 100% production tested at TA = +25°C. Specifications over temperature are guaranteed by design.
Note 2: Inferred from PSRR test.
Note 3: Inferred from CMRR test. Note also that either or both inputs can be driven to the absolute maximum limit (0.3V beyond
either supply rail) without damage or false output inversion.
Note 4: VOS is defined as the center of the input-referred hysteresis zone. See Figure 1.
Note 5: The input-referred trip points are the extremities of the differential input voltage required to make the comparator output
change state. The difference between the upper and lower trip points is equal to the width of the input-referred hysteresis
zone. See Figure 1.
Note 6: The polarity of IB reverses direction as VCM approaches either supply rail.
Note 7: Specified over the full common-mode voltage range (VCMR).
Note 8: Specification is for current flowing into or out of the output pin for VOUT driven to any voltage from VCC to GND while the part
is in shutdown.
Note 9: Specified between any two channels in the MAX9142/MAX9144.
Note 10: Specified as the difference between tPD+ and tPD- for any one comparator.
Note 11: Applies to the MAX9141 only for both SHDN and LE.
Note 12: Applies to the MAX9141 only. Comparator is active with LE driven high and is latched with LE driven low (VOD = 10mV). See
Figure 2.
Note 13: Applicable to the MAX9141 only. Comparator is active with the SHDN driven high and is shutdown with SHDN driven low.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSSupply Current (Per Comparator)ICC
VCM = VCC = 3V
MAX9141165275
MAX9140,
TA = -40°C to 85°C150250
MAX9140AA_ _360
MAX9142/MAX9144150250
VCM = VCC = 5V
MAX9141200320
MAX9140,
TA = -40°C to 85°C165300
MAX9140AA_ _400
MAX9142/MAX9144165300
MAX9141 only, SHDN = GND;
VCC = VCM = 3V1230
Propagation DelaytPD+,
tPD-VCC = 3V, VOD = 10mV40ns
Differential Propagation DelaydtPDVOD = 10mV (Note 9)2ns
Propagation Delay SkewVOD = 10mV (Note 10)2ns
Logic Input-Voltage HighVIH(Note 11)(VCC/2)
+0.4VCC/2V
Logic Input-Voltage LowVIL(Note 11)VCC/2(VCC/2)
-0.4V
Logic Input CurrentIIL, IIHVLOGIC = 0 to VCC (Note 11)210µA
Data-to-Latch Setup TimetS(Note 12)16ns
Latch-to-Data Hold TimetH(Note 12)16ns
Latch Pulse WidthtLPW(Note 12)45ns
Latch Propagation DelaytLPD(Note 12)60ns
Shutdown Enable Time(Note 13)1µs
Shutdown Disable Time(Note 13)5µs
MAX9140/MAX9141/
MAX9142/MAX9144
40ns, Low-Power, 3V/5V, Rail-to-Rail
Single-Supply Comparators
Electrical Characteristics (continued)
(VCC = 3.0V, VCM = 0V, CL = 15pF, VOD = 10mV, TA = +25°C, unless otherwise noted.)
OUTPUT LOW VOLTAGE
vs. TEMPERATURE
MAX9140 TOC02
TEMPERATURE (°C)
(mV)
ISINK = 4mA
OUTPUT HIGH VOLTAGE
vs. TEMPERATURE
MAX9140 TOC03
TEMPERATURE (°C)
(V)
ISOURCE = 4mA
VCC = 5.5V
OUTPUT SHORT-CIRCUIT (SINK) CURRENT
vs. TEMPERATURE
MAX9140 TOC04
TEMPERATURE (°C)
OUTPUT SHORT-CIRCUIT SINK CURRENT (mA)
OUTPUT SHORT-CIRCUIT (SOURCE)
CURRENT vs. TEMPERATURE
MAX9140 TOC05
OUTPUT SHORT-CIRCUIT SOURCE CURRENT (mA)
MAX9140 SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX9140 toc01
VCC (V)
ICC
(A)
TA = +85∞C
TA = +25∞C
TA = -40∞C
INPUT BIAS CURRENT
vs. TEMPERATURE
MAX9140 toc06
INPUT CURRENT (nA)
MAX9140/MAX9141/
MAX9142/MAX9144
40ns, Low-Power, 3V/5V, Rail-to-Rail
Single-Supply Comparators
Typical Operating Characteristics
(VCC = 3.0V, VCM = 0V, CL = 15pF, VOD = 10mV, TA = +25°C, unless otherwise noted.)
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX9140 toc07
TEMPERATURE (°C)
(µV)
TRIP POINT
vs. TEMPERATURE
MAX9140 toc08
TEMPERATURE (°C)
(mV)
VTRIP+
VTRIP-
INPUT VOLTAGE RANGE
vs. TEMPERATURE
MAX9140TOC09
TEMPERATURE (°C)
INPUT VOLTAGE RANGE (V)
VCMR+
VCMR-
VCC = 5.5V40206080100
PROPAGATION DELAY
vs. INPUT OVERDRIVEMAX9140 toc10
INPUT OVERDRIVE (mV)
PROPAGATION DELAY (nS)
tPD+
tPD-
PROPAGATION DELAY
vs. TEMPERATURE
MAX9140 toc11
PROPAGATION DELAY (ns)
tPD+
tPD-4560307590105
PROPAGATION DELAY
vs. CAPACITIVE LOADMAX9140 toc12
PROPAGATION DELAY (ns)
tPD+
tPD-
MAX9140/MAX9141/
MAX9142/MAX9144
40ns, Low-Power, 3V/5V, Rail-to-Rail
Single-Supply Comparators
Typical Operating Characteristics (continued)
(VCC = 3.0V, VCM = 0V, CL = 15pF, VOD = 10mV, TA = +25°C, unless otherwise noted.)
PINNAMEFUNCTIONMAX9140MAX9141MAX9142MAX9144—11OUTAComparator A Output—22INA-Comparator A Inverting Input—33INA+Comparator A Noninverting Input184VCCPositive Supply—55INB+Comparator B Noninverting Input—66INB-Comparator B Inverting Input—77OUTBComparator B Output——8OUTCComparator C Output——9INC-Comparator C Inverting Input——10INC+Comparator C Noninverting Input4411GNDGround——12IND+Comparator D Noninverting Input——13IND-Comparator D Inverting Input——14OUTDComparator D Output2——IN+Noninverting Input3——IN-Inverting Input6——SHDNShutdown: MAX9141 is active when SHDN is driven high;
MAX9141 is in shutdown when SHDN is driven low.5——LEThe output is latched when LE is low. The latch is transparent
when LE is high.7——OUTComparator Output
OUTPUT
2V/div
INPUT
50mV/div
PROPAGATION DELAY (tPD-)MAX9140TOC13
10ns/div
VOD = 10mV
VCC = 5.5V
OUTPUT
2V/div
INPUT
50mV/div
PROPAGATION DELAY (tPD+)MAX9140TOC14
10ns/div
VOD = 10mVVCC = 5.5V
OUTPUT
2V/div
INPUT
50mV/div
SINUSOID RESPONSE AT 4MHzMAX9140TOC15
50ns/div
VCC = 5.5V
MAX9140/MAX9141/
MAX9142/MAX9144
40ns, Low-Power, 3V/5V, Rail-to-Rail
Single-Supply Comparators
Pin Description
Typical Operating Characteristics (continued)
Detailed DescriptionThe MAX9140/MAX9141/MAX9142/MAX9144 single-
supply comparators feature internal hysteresis, high
speed, and low power. Their outputs are pulled to within
300mV of either supply rail without external pullup or
pulldown circuitry. Rail-to-rail input voltage range and low-
voltage single-supply operation make these devices ideal
for portable equipment. The devices interface directly to
CMOS and TTL logic.
Most high-speed comparators oscillate in the linear region
because of noise or undesired parasitic feedback. This
tends to occur when the voltage on one input is at or
equal to the voltage on the other input. To counter the
parasitic effects and noise, the devices have an internal
hysteresis of 1.5mV.
The hysteresis in a comparator creates two trip points:
one for the rising input voltage and one for the falling input
voltage (Figure 1). The difference between the trip points
is the hysteresis. The average of the trip points is the offset
voltage. When the comparator’s input voltages are equal,
the hysteresis effectively causes one comparator input
voltage to move quickly past the other, thus taking the
input out of the region where oscillation occurs. Standard
comparators require hysteresis to be added with external
resistors. The devices’ fixed internal hysteresis eliminates
these resistors. To increase hysteresis and noise margin
even more, add positive feedback with two resistors as a
voltage divider from the output to the noninverting input.
Figure 1 illustrates the case where IN- is fixed and IN+ is
varied. If the inputs were reversed, the figure would look
the same, except the output would be inverted.
The MAX9141 includes an internal latch that allows
storage of comparison results. The LE pin has a high input
impedance. If LE is high, the latch is transparent (i.e., the
comparator operates as though the latch is not present).
The comparator’s output state is latched when LEis pulled
low (Figure 2).
Shutdown Mode (MAX9141 Only)The MAX9141 shuts down when the SHDN pin is low. When shut down, the supply current drops to less than 12μA, and
the three-state output becomes high impedance. The SHDN
pin has a high-input impedance. Connect SHDN to VCC for
normal operation. Exit shutdown with LE high (transparent
state); otherwise, the output will be indeterminate.
Input Stage CircuitryThe devices include internal protection circuitry that prevents
damage to the precision input stage from large differential
input voltages. This protection circuitry consists of two
back-toback diodes between IN+ and IN- as well as two series 4.1kΩ resistors (Figure 3). The diodes limit the
differential voltage applied to the internal circuitry of the
comparators to be no more than 2VF, where VF is the
forward voltage drop of the diode (about 0.7V at +25°C).
For a large differential input voltage (exceeding 2VF), this
protection circuitry increases the input bias current at IN+
(source) and IN- (sink).(IN+ - IN-) - 2VInputCurrent24.1k=×Ω
Input current with large differential input voltages should
not be confused with input bias current (IB). As long as the
differential input voltage is less than 2VF, this input current
is equal to IB. The output is in the correct logic state if one
or both inputs are within the common-mode range.
Figure 1. Input and Output Waveform, Noninverting Input
Varied
VTRIP+
VHYSTTRIP-
COMPARATOR
OUTPUTOHOLTRIP+ + VTRIP-VOS =
VIN- = 0IN+
MAX9140/MAX9141/
MAX9142/MAX9144
40ns, Low-Power, 3V/5V, Rail-to-Rail
Single-Supply Comparators
Output Stage CircuitryThe MAX9140/MAX9141/MAX9142/MAX9144 contain a
current-driven output stage as shown in Figure 4. During
an output transition, ISOURCE or ISINK is pushed or pulled
to the output pin. The output source or sink current is high
during the transition, creating a rapid slew rate. Once the
output voltage reaches VOH or VOL, the source or sink
current decreases to a small value, capable of maintaining
the VOH or VOL static condition. This significant decrease
in current conserves power after an output transition has
occurred.
One consequence of a current-driven output stage is a
linear dependence between the slew rate and the load
capacitance. A heavy capacitive load will slow down a voltage
output transition. This can be useful in noisesensitive
applications where fast edges may cause interference.
Applications Information
Circuit Layout and BypassingThe high-gain bandwidth of the MAX9140/MAX9141/
MAX9142/MAX9144 requires design precautions to real-
ize the full high-speed capabilities of these comparators.
The recommended precautions are:
1) Use a PCB with a good, unbroken, low-inductance
ground plane.
2) Place a decoupling capacitor (a 0.1μF ceramic capacitor
3) Pay close attention to the decoupling capacitor’s bandwidth,
keeping leads short.
4) On the inputs and outputs, keep lead lengths short to avoid
unwanted parasitic feedback around the comparators.
5) Solder the device directly to the PCB instead of using
a socket.
Figure 2. MAX9141 Timing Diagram with Latch Operator
Figure 3. Input Stage Circuitry
VOH
tLPW
OUT
tLPDtPD
VCC
VCC
VCC
VOL
DIFFERENTIAL
INPUT
VOLTAGE
VOS
VOD
4.1kΩ
4.1kΩ
TO INTERNAL
CIRCUITRY
TO INTERNAL
CIRCUITRY
IN–
IN+
MAX9140
MAX9141
MAX9142
MAX9144MAX9140/MAX9141/
MAX9142/MAX9144
40ns, Low-Power, 3V/5V, Rail-to-Rail
Single-Supply Comparators
