MAX9634TERS+-MAX9634TERS+T Fast Delivery |IC PHOENIX CO.,LIMITED

MAX9634TERS+ ,1µA, 4-Bump UCSP/SOT23, Precision Current-Sense AmplifierApplicationsMAX9634FEUK+ 5 SOT23 50 +AFHHCell PhonesMAX9634HEUK+ 5 SOT23 100 +AFHIPDAsMAX9634WEUK+ ..
MAX9634TERS+T ,1µA, 4-Bump UCSP/SOT23, Precision Current-Sense AmplifierELECTRICAL CHARACTERISTICS(V = V = 3.6V, V = (V - V ) = 0V, T = -40°C to +85°C, unless otherwise no ..
MAX964EEE ,Single/Dual/Quad / Ultra-High-Speed / +3V/+5V /Beyond-the-Rails ComparatorsELECTRICAL CHARACTERISTICS(V = +2.7V to +5.5V, V = 0V, C = 5pF, V = 0V, V = 0V, unless otherwise no ..
MAX964EEE ,Single/Dual/Quad / Ultra-High-Speed / +3V/+5V /Beyond-the-Rails ComparatorsApplicationsThese devices are optimized for single +3V or +5Voperation. The input common-mode range ..
MAX964EEE+ ,Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails ComparatorsApplicationsdevices are optimized for single +3V or +5V operation. The ● Beyond-the-Rails Input Vol ..
MAX964EEE+T ,Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails ComparatorsFeatures● Ultra-Fast, 4.5ns Propagation DelayThe MAX961–MAX964/MAX997/MAX999 are low-power, ultra-h ..
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MB89163 ,8-bit Proprietary MicrocontrollerFUJITSU SEMICONDUCTORDS07-12405-2EDATA SHEET8-bit Proprietary MicrocontrollerCMOS2F MC-8L MB89160/1 ..
MB89163 ,8-bit Proprietary MicrocontrollerFUJITSU SEMICONDUCTORDS07-12405-2EDATA SHEET8-bit Proprietary MicrocontrollerCMOS2F MC-8L MB89160/1 ..

MAX9634TERS+-MAX9634TERS+T
1µA, 4-Bump UCSP/SOT23, Precision Current-Sense Amplifier
General Description
The MAX9634 high-side current-sense amplifier offers
precision accuracy specifications of VOSless than
250µV (max) and gain error less than 0.5% (max).
Quiescent supply current is an ultra-low 1µA. The
MAX9634 fits in a tiny, 1mm x 1mm UCSP™ package
size or a 5-pin SOT23 package, making the part ideal for
applications in notebook computers, cell phones, PDAs,
and all battery-operated portable devices where accura-
cy, low quiescent current, and small size are critical.
The MAX9634 features an input common-mode voltage
range from 1.6V to 28V. These current-sense amplifiers
have a voltage output and are offered in four gain versions:
25V/V (MAX9634T), 50V/V (MAX9634F), 100V/V
(MAX9634H), and 200V/V (MAX9634W).
The four gain selections offer flexibility in the choice of
the external current-sense resistor. The very low 250µV
(max) input offset voltage allows small 25mV to 50mV
full-scale VSENSEvoltage for very low voltage drop at
full-current measurement.
The MAX9634 is offered in tiny 4-bump UCSP (1mm x
1mm x 0.6mm footprint) and 5-pin SOT23 packages
specified for operation over the -40°C to +85°C extend-
ed temperature range.
Applications
Cell Phones
PDAs
Power-Management Systems
Portable/Battery-Powered Systems
Notebook Computers
FeaturesUltra-Low Supply Current of 1µA (max)Low 250µV (max) Input Offset VoltageLow < 0.5% (max) Gain ErrorInput Common Mode: +1.6V to +28VVoltage OutputFour Gain Versions Available
25V/V (MAX9634T)
50V/V (MAX9634F)
100V/V (MAX9634H)
200V/V (MAX9634W)Tiny 1mm x 1mm x 0.6mm, 4-Bump UCSP or
5-Pin SOT23 Packages
MAX9634
1µA, 4-Bump UCSP/SOT23,
Precision Current-Sense Amplifier
MAX9634T/F/H/WMAX9634T/F/H/W2
RS+RS-
GNDOUTGND
SOT23
UCSP
TOP VIEW
(BUMPS ON BOTTOM)B2
GND
RS+
OUT
RS-A2
DRAWINGS NOT TO SCALE
Pin Configurations
19-5021; Rev 2; 8/10
EVALUATION KIT
AVAILABLE
UCSP is a trademark of Maxim Integrated Products, Inc.
Ordering Information
+Denotes a lead(Pb)-free/RoHS-compliant package.
Note:All devices are specified over the -40°C to +85°C
extended temperature range.
PARTPIN-
PACKAGE
GAIN
(V/V)
TOP
MARK
MAX9634TERS+4 UCSP25+ABX
MAX9634FERS+4 UCSP50+ABY
MAX9634HERS+4 UCSP100+ABZ
MAX9634WERS+4 UCSP200+ACA
MAX9634TEUK+5 SOT2325+AFHG
MAX9634FEUK+5 SOT2350+AFHH
MAX9634HEUK+5 SOT23100+AFHI
MAX9634WEUK+5 SOT23200+AFHJ
MAX9634
1µA, 4-Bump UCSP/SOT23,
Precision Current-Sense Amplifier
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VRS+ = VRS- = 3.6V, VSENSE= (VRS+ - VRS-) = 0V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
Stresses 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.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
VRS+ = 5V, TA = +25°C0.50.85
VRS+ = 5V, -40°C < TA < +85°C1.1
VRS+ = 28V, TA = +25°C1.11.8Supply Current (Note 2)ICC
VRS+ = 28V, -40°C < TA < +85°C2.5
Common-Mode Input RangeVCMGuaranteed by CMRR, -40°C < TA < +85°C1.628V
Common-Mode Rejection RatioCMRR1.6V < VRS+ < 28V, -40°C < TA < +85°C94130dB
TA = +25°C100250MAX9634T/MAX9634F/
MAX9634H-40°C < TA < +85°C300
TA = +25°C100250
Input Offset Voltage (Note 3)VOS
MAX9634W-40°C < TA < +85°C425
MAX9634T25
MAX9634F50
MAX9634H100
GainG
MAX9634W200
V/V
TA = +25°C±0.1±0.5MAX9634T/MAX9634F/
MAX9634H-40°C < TA < +85°C±0.6
TA = +25°C±0.1±0.7Gain Error (Note 4)GE
MAX9634W-40°C < TA < +85°C±0.8
MAX9634T/MAX9634F/MAX9634H7.01013.2Output Resistance (Note 5)ROUTMAX9634W14.02026.4kΩ
Gain = 251.57.5
Gain = 50315
Gain = 100630OUT Low VoltageVOL
Gain = 2001285
RS+, RS- to GND....................................................-0.3V to +30V
OUT to GND.............................................................-0.3V to +6V
RS+ to RS-...........................................................................±30V
Short-Circuit Duration: OUT to GND..........................Continuous
Continuous Input Current (any pin)..................................±20mA
Continuous Power Dissipation (TA= +70°C)
4-Bump UCSP (derate 3.0mW/°C above +70°C).........238mW
5-Pin SOT23 (derate 3.9mW/°C above +70°C)............312mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Soldering Temperature (reflow).......................................+260°C
MAX9634
1µA, 4-Bump UCSP/SOT23,
Precision Current-Sense Amplifier
Note 1:All devices are 100% production tested at TA= +25°C. All temperature limits are guaranteed by design.
Note 2:VOUT = 0. ICCis the total current into RS+ plus RS- pins.
Note 3:VOSis extrapolated from measurements for the gain-error test.
Note 4:Gain error is calculated by applying two values of VSENSEand calculating the error of the slope vs. the ideal:
Gain = 25, VSENSEis 20mV and 120mV.
Gain = 50, VSENSEis 10mV and 60mV.
Gain = 100, VSENSEis 5mV and 30mV.
Gain = 200, VSENSEis 2.5mV and 15mV.
Note 5:The device is stable for any external capacitance value.
Note 6:VOHis the voltage from VRS- to VOUTwith VSENSE= 3.6V/gain.
ELECTRICAL CHARACTERISTICS (continued)
(VRS+ = VRS- = 3.6V, VSENSE= (VRS+ - VRS-) = 0V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
OUT High VoltageVOHVOH = VRS- - VOUT (Note 6)0.10.2V
VSENSE = 50mV, gain = 25125
VSENSE = 50mV, gain = 5060
VSENSE = 50mV, gain = 10030
Small-Signal Bandwidth
(Note 5)BW
VSENSE = 50mV, gain = 20015
kHz
Output Settling TimetS1% final value, VSENSE = 50mV100µs
Typical Operating Characteristics
(VRS+= VRS-= 3.6V, TA= +25°C, unless otherwise noted.)
INPUT OFFSET VOLTAGE HISTOGRAM
MAX9634 toc01
INPUT OFFSET VOLTAGE (mV)
N (%)
GAIN ERROR HISTOGRAM
MAX9634 toc02
GAIN ERROR (%)
N (%)
SUPPLY CURRENT
vs. TEMPERATURE
MAX9634 toc03
TEMPERATURE (°C)
SUPPLY CURRENT (-153560
28V
3.6V
1.8V
-4085
MAX9634
1µA, 4-Bump UCSP/SOT23,
Precision Current-Sense Amplifier
INPUT OFFSET
vs. COMMON-MODE VOLTAGE
MAX9634 toc04
COMMON-MODE VOLTAGE (V)
INPUT OFFSET (2010515
INPUT OFFSET
vs. TEMPERATURE
MAX9634 toc05
INPUT OFFSET (
TEMPERATURE (°C)-153560-4085
SUPPLY CURRENT
vs. COMMON-MODE VOLTAGE
MAX9634 toc06
COMMON-MODE VOLTAGE (V)
SUPPLY CURRENT (201030525
GAIN ERROR
vs. COMMON-MODE VOLTAGE
MAX9634 toc07
VOLTAGE (V)
GAIN
ERROR
(%)
GAIN ERROR
vs. TEMPERATURE
MAX9634 toc08
TEMPERATURE (°C)
GAIN ERROR (%)608535-15
VOUT vs. VSENSE
(SUPPLY = 3.6V)
MAX9634 toc09
VSENSE (mV)
OUT
(V)
G = 100
G = 25
G = 50
VOUT vs. VSENSE
(SUPPLY = 1.6V)
MAX9634 toc10
VSENSE (mV)
OUT
(V)604020
G = 100
G = 50
G = 25
SMALL-SIGNAL GAIN
vs. FREQUENCY
MAX9634 toc11
FREQUENCY (Hz)
GAIN (dB)
100k101M10010k1k
AV = 25V/V
AV = 100V/V
AV = 50V/V
CMRR
vs. FREQUENCY
MAX9634 toc12
FREQUENCY (Hz)
CMRR (dB)
100k101M10010k1k
G = 25
G = 50
G = 100
Typical Operating Characteristics (continued)
(VRS+= VRS-= 3.6V, TA= +25°C, unless otherwise noted.)
MAX9634
1µA, 4-Bump UCSP/SOT23,
Precision Current-Sense Amplifier
SMALL-SIGNAL PULSE RESPONSE
(GAIN = 100)
MAX9634 toc13a
20μs/div
VOUT
VSENSE
1.5V
10mV
15mV
SMALL-SIGNAL PULSE RESPONSE
(GAIN = 50)
MAX9634 toc13b
25μs/div
VOUT
VSENSE
1.5V
20mV
30mV
SMALL-SIGNAL PULSE RESPONSE
(GAIN = 25)
MAX9634 toc13c
25μs/div
VOUT
VSENSE
1.5V
40mV
60mV
LARGE-SIGNAL PULSE RESPONSE
(GAIN = 100)
MAX9634 toc14a
20μs/div
VOUT
VSENSE
10mV
30mV
LARGE-SIGNAL PULSE RESPONSE
(GAIN = 50)
MAX9634 toc14b
25μs/div
VOUT
VSENSE
0.5V
10mV
60mV
LARGE-SIGNAL PULSE RESPONSE
(GAIN = 25)
MAX9634 toc14c
25μs/div
VOUT
VSENSE
0.5V
20mV
120mV
Typical Operating Characteristics (continued)
(VRS+= VRS-= 3.6V, TA= +25°C, unless otherwise noted.)
Pin Description
PIN
UCSPSOT23NAMEFUNCTION5RS+External Sense Resistor Power-Side Connection4RS-External Sense Resistor Load-Side Connection1, 2GNDGround3OUTOutput Voltage. VOUT is proportional to VSENSE = VRS+ - VRS-.
MAX9634
1µA, 4-Bump UCSP/SOT23,
Precision Current-Sense Amplifier
Detailed Description
The MAX9634 unidirectional high-side, current-sense
amplifier features a 1.6V to 28V input common-mode
range. This feature allows the monitoring of current out
of a battery with a voltage as low as 1.6V. The
MAX9634 monitors current through a current-sense
resistor and amplifies the voltage across that resistor.
The MAX9634 is a unidirectional current-sense amplifier
that has a well-established history. An op amp is used
to force the current through an internal gain resistor at
RS+, which has a value of R1, such that its voltage drop
equals the voltage drop across an external sense resis-
tor, RSENSE. There is an internal resistor at RS- with the
same value as R1to minimize offset voltage. The cur-
rent through R1is sourced by a high-voltage p-channel
FET. Its source current is the same as its drain current,
which flows through a second gain resistor, ROUT. This
produces an output voltage, VOUT, whose magnitude is
ILOADx RSENSEx ROUT/R1. The gain accuracy is
based on the matching of the two gain resistors R1and
ROUT(see Table 1). Total gain = 25V/V for the
MAX9634T, 50V/V for the MAX9634F, 100V/V for the
MAX9634H, and 200V/V for the MAX9634W. The output
is protected from input overdrive by use of an output
current-limiting circuit of 7mA (typical) and a 6V clamp
protection circuit.
Applications Information
Choosing the Sense Resistor
Choose RSENSEbased on the following criteria:
Voltage Loss
A high RSENSEvalue causes the power-source voltage
to drop due to IR loss. For minimal voltage loss, use the
lowest RSENSEvalue.
GAIN
(V/V)
(Ω)
ROUT
(kΩ)
Table 1. Internal Gain-Setting Resistors
(Typical Values)
Typical Operating Circuit
VBATT = 1.6V TO 28V
RSENSE
ILOAD
ROUT
GND
OUT
MAX9634
RS+RS-
ADC
LOAD
VDD = 3.3V
10kΩ

Partno	Mfg	Dc	Qty	Available	Descript
MAX9634TERS+	MAXIM	N/a	50000	avai	1µA, 4-Bump UCSP/SOT23, Precision Current-Sense Amplifier
MAX9634TERS+T	MAXIM	N/a	2500	avai	1µA, 4-Bump UCSP/SOT23, Precision Current-Sense Amplifier