MAX5842MEUB ,Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DACApplicationso oMAX5842LEUB -40 C to +85 C 10 µMAX 0111 10Xo oDigital Gain and Offset AdjustmentsMAX ..
MAX5842MEUB+T ,Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DACApplicationso oMAX5842LEUB -40 C to +85 C 10 µMAX 0111 10Xo oDigital Gain and Offset AdjustmentsMAX ..
MAX584JH ,PIN PROGRAMMABLE PRECISION VOLTAGE REFERENCEFeatures
' Programmable Outputs of:
+10.0V, +7.5V, +5.0V, +2.5V
O t10mV Tolerance at +10V (M ..
MAX5853ETL ,2.7 V to 3.6 V, Dual, 10-bit, 80 Msps, current-output DACApplications3 28DA7/IDE CLKCommunicationsDA6/REN 4 27 CVDDSatCom, LMDS, MMDS, HFC, DSL, WLAN,DA5/G3 ..
MAX5854ETL+T ,Dual, 10-Bit, 165Msps, Current-Output DACElectrical Characteristics(AV = DV = CV = 3V, AGND = DGND = CGND = 0, f = 165Msps, differential clo ..
MAX5877EGK+D ,14-Bit, 250Msps, High-Dynamic-Performance, Dual DAC with LVDS InputsApplicationsBase Stations: Single/Multicarrier UMTS, CDMA, GSM68 67 66 65 64 63 62 61 60 59 58 57 5 ..
MAZ8047 ,Small-signal deviceelectrical characteristicswithin part numbersReverse current I V Specified value µ AR R*3Temperatur ..
MAZ8047-H ,Silicon planar typeelectrical characteristicsZ Zwithin part numbersReverse current I V ··············· Specified value ..
MAZ8047-L ,Silicon planar typeAbsolute Maximum Ratings T = 25°CaMarking SymbolParameter Symbol Rating UnitRefer to the list of t ..
MAZ8047M ,Silicon planar typeElectrical Characteristics T = 25°CaParameter Symbol Conditions Min Typ Max UnitForward voltage V ..
MAZ8047-M ,Silicon planar typeZener DiodesMAZ8000 SeriesSilicon planar typeUnit : mmFor stabilization of power supplyKA
MAZ8051-H ,Silicon planar typeElectrical characteristics within part numbers T = 25°CaTemperaturecoefficient ofZener voltage Rev ..
MAX5842MEUB
Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC
General DescriptionThe MAX5842 is a quad, 12-bit voltage-output, digital-
to-analog converter (DAC) with an I2C™-compatible,
2-wire interface that operates at clock rates up to
400kHz. The device operates from a single 2.7V to 5.5V
supply and draws only 230µA at VDD= 3.6V. A power-
down mode decreases current consumption to less
than 1µA. The MAX5842 features three software-selec-
table power-down output impedances: 100kΩ, 1kΩ,
and high impedance. Other features include internal
precision Rail-to-Rail®output buffers and a power-on
reset (POR) circuit that powers up the DAC in the
100kΩpower-down mode.
The MAX5842 features a double-buffered I2C-compati-
ble serial interface that allows multiple devices to share
a single bus. All logic inputs are CMOS-logic compati-
ble and buffered with Schmitt triggers, allowing direct
interfacing to optocoupled and transformer-isolated
interfaces. The MAX5842 minimizes digital noise
feedthrough by disconnecting the clock (SCL) signal
from the rest of the device when an address mismatch
is detected.
The MAX5842 is specified over the extended tempera-
ture range of -40°C to +85°C and is available in a
miniature 10-pin µMAX package. Refer to the MAX5841
data sheet for the 10-bit version.
ApplicationsDigital Gain and Offset Adjustments
Programmable Voltage and Current Sources
Programmable Attenuation
VCO/Varactor Diode Control
Low-Cost Instrumentation
Battery-Powered Equipment
ATE
FeaturesUltra-Low Supply Current
230µA at VDD= 3.6V
280µA at VDD= 5.5V300nA Low-Power Power-Down ModeSingle 2.7V to 5.5V Supply VoltageFast 400kHz I2C-Compatible 2-Wire Serial
InterfaceSchmitt-Trigger Inputs for Direct Interfacing to
OptocouplersRail-to-Rail Output Buffer AmplifiersThree Software-Selectable Power-Down Output
Impedances
100kΩ, 1kΩ, and High ImpedanceRead-Back Mode for Bus and Data CheckingPower-On Reset to Zero10-Pin µMAX Package
MAX5842
Quad, 12-Bit, Low-Power, 2-Wire, Serial
Voltage-Output DAC
Pin Configuration
Ordering Informationypical Operating Circuit19-2317; Rev 0; 1/02
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
I2C is a trademark of Philips Corp.
MAX5842
Quad, 12-Bit, Low-Power, 2-Wire, Serial
Voltage-Output DAC
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(VDD= +2.7V to +5.5V, GND = 0, VREF= VDD, RL= 5kΩ, CL= 200pF, TA= TMINto TMAX, unless otherwise noted. Typical values are
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.
VDD, SCL, SDA to GND............................................-0.3V to +6V
OUT_, REF, ADD to GND..............................-0.3V to VDD+ 0.3V
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (TA= +70°C)
10-Pin µMAX (derate 5.6mW above +70°C).................444mW
Operating Temperature Range...........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Maximum Junction Temperature.....................................+150°C
Lead Temperature (soldering, 10s).................................+300°C
MAX5842
Quad, 12-Bit, Low-Power, 2-Wire, Serial
Voltage-Output DAC
ELECTRICAL CHARACTERISTICS (continued)(VDD= +2.7V to +5.5V, GND = 0, VREF= VDD, RL= 5kΩ, CL= 200pF, TA= TMINto TMAX, unless otherwise noted. Typical values are
MAX5842
Quad, 12-Bit, Low-Power, 2-Wire, Serial
Voltage-Output DAC
INTEGRAL NONLINEARITY
vs. INPUT CODEMAX5842 toc01
INPUT CODE
INL (LSB)
INTEGRAL NONLINEARITY
vs. SUPPLY VOLTAGE
MAX5842 toc02
SUPPLY VOLTAGE (V)
INL (LSB)
INTEGRAL NONLINEARITY
vs. TEMPERATURE
MAX5842 toc03
TEMPERATURE (°C)
INL (LSB)3510-15
DIFFERENTIAL NONLINEARITY
vs. INPUT CODE
MAX5842 toc04
INPUT CODE
DNL (LSB)
DIFFERENTIAL NONLINEARITY
vs. SUPPLY VOLTAGE
MAX5842 toc05
SUPPLY VOLTAGE (V)
DNL (LSB)
DIFFERENTIAL NONLINEARITY
vs. TEMPERATURE
MAX5842 toc06
TEMPERATURE (°C)
DNL (LSB)3510-15
Typical Operating Characteristics
(VDD= +5V, RL= 5kΩ.)
ELECTRICAL CHARACTERISTICS (continued)(VDD= +2.7V to +5.5V, GND = 0, VREF= VDD, RL= 5kΩ, CL= 200pF, TA= TMINto TMAX, unless otherwise noted. Typical values are
at VDD= +5V, TA= +25°C.) (Note 1)
Note 1:All devices are 100% production tested at TA= +25°C and are guaranteed by design for TA= TMINto TMAX.
Note 2:Static specifications are tested with the output unloaded.
Note 3:Linearity is guaranteed from codes 115 to 3981.
Note 4:Offset and gain error limit the FSR.
Note 5:Guaranteed by design. Not production tested.
MAX5842
Quad, 12-Bit, Low-Power, 2-Wire, Serial
Voltage-Output DAC
ZERO-CODE ERROR
vs. SUPPLY VOLTAGEMAX5842 toc07
SUPPLY VOLTAGE (V)
ZERO-CODE ERROR (mV)
ZERO-CODE ERROR
vs. TEMPERATURE
MAX5842 toc08
TEMPERATURE (°C)
ZERO-CODE ERROR (mV)3510-15
GAIN ERROR vs. SUPPLY VOLTAGE
MAX5842 toc09
SUPPLY VOLTAGE (V)
GAIN ERROR (%FSR)
GAIN ERROR vs. TEMPERATURE
MAX5842 toc10
TEMPERATURE (°C)
GAIN ERROR (%FSR)3510-15
DAC OUTPUT VOLTAGE
vs. OUTPUT SOURCE CURRENT (NOTE 6)
MAX5842 toc11
OUTPUT SOURCE CURRENT (mA)
DAC OUTPUT VOLTAGE (V)642
DAC OUTPUT VOLTAGE
vs. OUTPUT SINK CURRENT (NOTE 6)
MAX5842 toc12
OUTPUT SINK CURRENT (mA)
DAC OUTPUT VOLTAGE (V)642
SUPPLY CURRENT vs. INPUT CODE
MAX5842 toc13
INPUT CODE
SUPPLY CURRENT (
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX5842 toc15
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (
2.75.5
ypical Operating Characteristics (continued)(VDD= +5V, RL= 5kΩ.)
MAX5842
Quad, 12-Bit, Low-Power, 2-Wire, Serial
Voltage-Output DAC
POWER-DOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGEMAX5842 toc16
SUPPLY VOLTAGE (V)
POWER-DOWN SUPPLY CURRENT (nA)
POWER-UP GLITCH
MAX5842 toc17
100µs/div
VDD
OUT_
10mV/div
EXITING SHUTDOWNMAX5842 toc18
2µs/div
OUT_500mV/div
MAJOR CARRY TRANSITION
(POSITIVE)MAX5842 toc19
2µs/div
OUT_5mV/div
MAJOR CARRY TRANSITION
(NEGATIVE)MAX5842 toc20
2µs/div
OUT_5mV/div
Typical Operating Characteristics (continued)(VDD= +5V, RL= 5kΩ.)
MAX5842
Quad, 12-Bit, Low-Power, 2-Wire, Serial
Voltage-Output DAC
SETTLING TIME
(NEGATIVE)MAX5842 toc22
2µs/div
OUT_500mV/div
DIGITAL FEEDTHROUGHMAX5842 toc23
40µs/div
OUT_2mV/div
SCL2V/div
CROSSTALKMAX5842 toc24
4µs/div
VOUTB1mV/div
VOUTA2V/div
Typical Operating Characteristics (continued)(VDD= +5V, RL= 5kΩ.)
Note 6:The ability to drive loads less than 5kΩis not implied.
MAX5842
Quad, 12-Bit, Low-Power, 2-Wire, Serial
Voltage-Output DAC
Detailed DescriptionThe MAX5842 is a quad, 12-bit, voltage-output DAC
with an I2C/SMBus-compatible 2-wire interface. The
device consists of a serial interface, power-down cir-
cuitry, four input and DAC registers, four 12-bit resistor
string DACs, four unity-gain output buffers, and output
resistor networks. The serial interface decodes the
address and control bits, routing the data to the proper
input or DAC register. Data can be directly written to
the DAC register, immediately updating the device out-
put, or can be written to the input register without
changing the DAC output. Both registers retain data as
long as the device is powered.
DAC OperationThe MAX5842 uses a segmented resistor string DAC
architecture, which saves power in the overall system
and guarantees output monotonicity. The MAX5842’s
input coding is straight binary, with the output voltage
given by the following equation:
where N = 12 (bits), and D = the decimal value of the
input code (0 to 4095).
Output BufferThe MAX5842 analog outputs are buffered by preci-
sion, unity-gain followers that slew 0.5V/µs. Each buffer
output swings rail-to-rail, and is capable of driving 5kΩ
in parallel with 200pF. The output settles to ±0.5LSB
within 4µs.
Power-On ResetThe MAX5842 features an internal POR circuit that ini-
tializes the device upon power-up. The DAC registers
are set to zero scale and the device is powered down,
with the output buffers disabled and the outputs pulled
to GND through the 100kΩtermination resistor.
Following power-up, a wake-up command must be initi-
ated before any conversions are performed.
Power-Down ModesThe MAX5842 has three software-controlled, low-
power, power-down modes. All three modes disable
the output buffers and disconnect the DAC resistor
strings from REF, reducing supply current draw to 1µA
and the reference current draw to less than 1µA. In
power-down mode 0, the device output is high imped-
ance. In power-down mode 1, the device output is
internally pulled to GND by a 1kΩtermination resistor.
In power-down mode 2, the device output is internally
pulled to GND by a 100kΩtermination resistor. Table 1
shows the power-down mode command words.
Upon wake-up, the DAC output is restored to its previ-
ous value. Data is retained in the input and DAC regis-
ters during power-down mode.
Digital Interface The MAX5842 features an I2C/SMBus-compatible
2-wire interface consisting of a serial data line (SDA)
and a serial clock line (SCL). The MAX5842 is SMBus
compatible within the range of VDD= 2.7V to 3.6V. SDA
and SCL facilitate bidirectional communication between
the MAX5842 and the master at rates up to 400kHz.
Figure 1 shows the 2-wire interface timing diagram. The
MAX5842 is a transmit/receive slave-only device, rely-
ing upon a master to generate a clock signal. The mas-
ter (typically a microcontroller) initiates data transfer on
the bus and generates SCL to permit that transfer.
A master device communicates to the MAX5842 by
transmitting the proper address followed by command
and/or data words. Each transmit sequence is framed
