MAX128BCAI ,Multirange, +5V, 12-bit DAS with 2-wire serial interface. INL(LSB) +1,-1FeaturesThe MAX127/MAX128 are multirange, 12-bit data' 12-Bit Resolution, 1/2 LSB Linearityacquisit ..
MAX128BCNG+ ,Multirange, +5V, 12-Bit DAS with 2-Wire Serial Interfacefeatures include a 5MHz band-● Two Power-Down Modeswidth track/hold, an 8ksps throughput rate, and ..
MAX1290ACEI ,400ksps, +5V, 8-/4-Channel, 12-Bit ADCs with +2.5V Reference and Parallel InterfaceApplicationsD4 5 20 GNDIndustrial Control Systems Data LoggingMAX1292D3/D11 6 19 COMEnergy Manageme ..
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MAX1290AEEI+ ,400ksps, +5V, 8-/4-Channel, 12-Bit ADCs with +2.5V Reference and Parallel InterfaceMAX1290/MAX129219-1531; Rev 3; 12/02400ksps, +5V, 8-/4-Channel, 12-Bit ADCs with +2.5V Reference an ..
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MAX378CPE ,High-Voltage, Fault-Protected Analog MultiplexersFeatures' Fault Input Voltage ±75V with Power Supplies OffThe MAX378 8-channel single-ended (1-of-8 ..
MAX378EJE ,High-Voltage, Fault-Protected Analog MultiplexersELECTRICAL CHARACTERISTICS (continued)(V+ = +15V, V- = -15V; V (Logic Level High) = +2.4V, V (Logic ..
MAX3795ETG ,3.3 V +/-10%, 1 to 4.25 Gbps multirate VCSEL driver with diagnostic monitorfeatures.♦ 2mA to 15mA Modulation CurrentThe automatic power control (APC) adjusts the laser♦ 1mA t ..
MAX127BCNG-MAX128BCAI
Multirange, +5V, 12-bit DAS with 2-wire serial interface. INL(LSB) +1,-1
General DescriptionThe MAX127/MAX128 are multirange, 12-bit data
acquisition systems (DAS) that require only a single
+5V supply for operation, yet accept signals at their
analog inputs that may span above the power-supply
rail and below ground. These systems provide eight
analog input channels that are independently software
programmable for a variety of ranges: ±10V, ±5V, 0 to
+10V, 0 to +5V for the MAX127; and ±VREF, ±VREF/2, 0
to +VREF, 0 to +VREF/2 for the MAX128. This range
switching increases the effective dynamic range to 14
bits and provides the flexibility to interface 4–20mA,
±12V, and ±15V-powered sensors directly to a single
+5V system. In addition, these converters are fault pro-
tected to ±16.5V; a fault condition on any channel will
notaffect the conversion result of the selected channel.
Other features include a 5MHz bandwidth track/hold,
an 8ksps throughput rate, and the option of an internal
4.096V or external reference.
The MAX127/MAX128 feature a 2-wire, I2C-compatible
serial interface that allows communication among multi-
ple devices using SDA and SCL lines.
A hardware shutdown input (SHDN) and two software-
programmable power-down modes (standby and full
power-down) are provided for low-current shutdown
between conversions. In standby mode, the reference-
buffer remains active, eliminating start-up delays.
The MAX127/MAX128 are available in 24-pin DIP or
space-saving 28-pin SSOP packages.
ApplicationsIndustrial Control Systems
Data-Acquisition Systems
Robotics
Automatic Testing
Battery-Powered Instruments
Medical Instruments
Features12-Bit Resolution, 1/2 LSB Linearity+5V Single-Supply OperationI2C-Compatible, 2-Wire Serial InterfaceFour Software-Selectable Input Ranges
MAX127: 0 to +10V, 0 to +5V, ±10V, ±5V
MAX128: 0 to +VREF, 0 to +VREF/2, ±VREF,
±VREF/28 Analog Input Channels8ksps Sampling Rate±16.5V Overvoltage-Tolerant Input MultiplexerInternal 4.096V or External ReferenceTwo Power-Down Modes24-Pin Narrow DIP or 28-Pin SSOP Packages
MAX127/MAX128
Multirange, +5V, 12-Bit DAS with
2-Wire Serial Interfaceypical Operating Circuit
Ordering Information continued at end of data sheet.
Ordering Information
MAX127/MAX128
Multirange, +5V, 12-Bit DAS with
2-Wire Serial Interface
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.
VDDto AGND............................................................-0.3V to +6V
AGND to DGND.....................................................-0.3V to +0.3V
CH0–CH7 to AGND.........................................................±16.5V
REF to AGND..............................................-0.3V to (VDD+ 0.3V)
REFADJ to AGND.......................................-0.3V to (VDD+ 0.3V)
A0, A1, A2 to DGND...................................-0.3V to (VDD+ 0.3V)
SHDN, SCL, SDA to DGND......................................-0.3V to +6V
Max Current into Any Pin....................................................50mA
Continuous Power Dissipation (TA= +70°C)
24-Pin Narrow DIP (derate 13.33mW/°C above +70°C)..1067mW
28-Pin SSOP (derate 9.52mW/°C above +70°C)...............762mW
Operating Temperature Ranges
MAX127_C__/MAX128_C__.............................0°C to +70°C
MAX127_E__/MAX128_E__..........................-40°C to +85°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10sec) ............................+300°C
ELECTRICAL CHARACTERISTICS(VDD= +5V ±5%; unipolar/bipolar range; external reference mode, VREF= 4.096V; 4.7µF at REF; external clock, fCLK= 400kHz;= TMINto TMAX; unless otherwise noted. Typical values are at TA= +25°C.)
MAX127/MAX128
Multirange, +5V, 12-Bit DAS with
2-Wire Serial Interface
ELECTRICAL CHARACTERISTICS (continued)(VDD= +5V ±5%; unipolar/bipolar range; external reference mode, VREF= 4.096V; 4.7µF at REF pin; external clock, fCLK= 400kHz; = TMINto TMAX; unless otherwise noted. Typical values are at TA= +25°C.)
MAX127/MAX128
Multirange, +5V, 12-Bit DAS with
2-Wire Serial Interface
ELECTRICAL CHARACTERISTICS (continued)(VDD= +5V ±5%; unipolar/bipolar range; external reference mode, VREF= 4.096V; 4.7µF at REF pin; external clock, fCLK= 400kHz; = TMINto TMAX; unless otherwise noted. Typical values are at TA= +25°C.)
MAX127/MAX128
Multirange, +5V, 12-Bit DAS with
2-Wire Serial Interface
ELECTRICAL CHARACTERISTICS (continued)(VDD= +5V ±5%; unipolar/bipolar range; external reference mode, VREF= 4.096V; 4.7µF at REF pin; external clock, fCLK= 400kHz; = TMINto TMAX; unless otherwise noted. Typical values are at TA= +25°C.)
TIMING CHARACTERISTICS(VDD= +4.75V to +5.25V; unipolar/bipolar range; external reference mode, VREF= 4.096V; 4.7µF at REF pin; TA= TMINto TMAX;
unless otherwise noted. Typical values are at TA= +25°C.)
MAX127/MAX128
Multirange, +5V, 12-Bit DAS with
2-Wire Serial Interface
TIMING CHARACTERISTICS (continued)(VDD= +4.75V to +5.25V; unipolar/bipolar range; external reference mode, VREF = 4.096V; 4.7µF at REF pin; TA = TMINto TMAX;
unless otherwise noted. Typical values are at TA = +25°C.)
Note 1:Accuracy specifications tested at VDD= 5.0V. Performance at power-supply tolerance limits is guaranteed by Power-
Supply Rejection test.
Note 2:External reference: VREF= 4.096V, offset error nulled, ideal last-code transition = FS - 3/2LSB.
Note 3:Ground “on” channel, sine wave applied to all “off” channels.
Note 4:Guaranteed by design. Not tested.
Note 5:Use static external load during conversion for specified accuracy.
Note 6:Tested using internal reference.
Note 7:PSRR measured at full scale. Tested for the ±10V (MAX127) and ±4.096V (MAX128) input ranges.
Note 8:Not subject to production testing. Provided for design guidance only.
Multirange, +5V, 12-Bit DAS with
2-Wire Serial Interface
Typical Operating Characteristics(VDD= +5V, external reference mode, VREF= 4.096V; 4.7µF at REF; external clock, fCLK= 400kHz; TA = +25°C; unless otherwise noted.)
MAX127/MAX128
Multirange, +5V, 12-Bit DAS with
2-Wire Serial Interface
Pin Description
