MAX1142:14-Bit ADC, 200ksps, +5V Single-Supply with Reference

The MAX1142/MAX1143 are 200ksps, 14-bit ADCs. These serially interfaced ADCs connect directly to SPI™, QSPI™, and MICROWIRE™ devices without external logic. They combine an input scaling network, internal track/hold, a clock, +4.096V reference, and three general-purpose digital output pins (for external multiplexer or PGA control) in a 20-pin SSOP package. The excellent dynamic performance (SINAD > 81dB), high-speed (200ksps), and low power (7.5mA) of these ADCs, make them ideal for applications such as industrial process control, instrumentation, and medical applications. The MAX1142 accepts input signals of 0 to +12V (unipolar) or ±12V (bipolar), while the MAX1143 accepts input signals of 0 to +4.096V (unipolar) or ±4.096V (bipolar). Operating from a single +4.75V to +5.25V analog supply and a +4.75V to +5.25V digital supply, power-down modes reduce current consumption to 1mA at 10ksps and further reduce supply current to less than 20µA at slower data rates. A serial strobe output (SSTRB) allows direct connection to the TMS320-family of digital signal processors. The MAX1142/MAX1143 user can select either the internal clock, or an external serial-interface clock for the ADC to perform analog-to-digital conversions. The MAX1142/MAX1143 feature internal calibration circuitry to correct linearity and offset errors. On-demand calibration allows the user to optimize performance. Three user-programmable logic outputs are provided for the control of an 8-channel MUX or a PGA.

Key Features
  • 200ksps (bipolar) and 150ksps (unipolar) Sampling ADC
  • 14-Bits, No Missing Codes
  • 1LSB INL Guaranteed
  • 81dB (min) SINAD
  • +5V Single-Supply Operation
  • Low Power Operation, 7.5mA (Unipolar Mode)
  • 2.5µA Shutdown Mode
  • Software-Configurable Unipolar & Bipolar Input Ranges
    • 0 to +12V and ±12V (MAX1142)
    • 0 to +4.096V and ±4.096V (MAX1143)
    • Internal or External Reference
  • Internal or External Clock
  • SPI/QSPI/MICROWIRE-Compatible Wire Serial Interface
  • Three User-Programmable Logic Outputs
  • Small 20-Pin SSOP Package
MAX1142, MAX1143: Typical Application Circuit
MAX1142, MAX1143: Typical Application Circuit
Applications/Uses
  • Data Acquisition
DataSheet
titleDownload file
MAX1142-MAX1143 Data SheetMAX1142-MAX1143.pdf
Parametrics
Part NumberResolution
(bits)
Input Chan.Conv. Rate
(ksps)
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
(V)
External VREF
(V)
External VREF
(V)
Unipolar VIN
(V)
Bipolar VIN
(±V)
SNR
(dB)
THD
(dB)
INL
(±LSB)
Package/PinsBudgetary
Price
ADCmaxnominalminmaxmaxmaxSee Notes
MAX1142141200SARSPIS.E. Only4.09634.2121282-911SSOP/20$7.64 @1k
MAX11434.0964.096SSOP/20$7.83 @1k
Related Products
  • MAX11101:14-Bit, +5V, 200ksps ADC with 10µA Shutdown
  • MAX1144:14-Bit ADCs, 150ksps, 3.3V Single Supply
  • MAX1145:14-Bit ADCs, 150ksps, 3.3V Single Supply
  • MAX1135:16-Bit ADCs, 150ksps, 3.3V Single Supply
  • MAX1134:16-Bit ADCs, 150ksps, 3.3V Single Supply
  • MAX1062:14-Bit, +5V, 200ksps ADC with 10µA Shutdown
  • MAX1133:16-Bit ADC, 200ksps, 5V Single-Supply with Reference
  • MAX1132:16-Bit ADC, 200ksps, 5V Single-Supply with Reference
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1142ACAPNo Longer AvailableMAX1142ACAP+SSOP,;20 pin;57.9 mm²0°C to +70°CNo
MAX1142ACAP+ActiveSSOP,;20 pin;57.9 mm²0°C to +70°CLead Free
MAX1142ACAP+TActiveSSOP,;20 pin;57.9 mm²0°C to +70°CLead Free
MAX1142ACAP-TNo Longer AvailableMAX1142ACAP+TSSOP;20 pin0°C to +70°CSee data sheet
MAX1142AEAPNo Longer AvailableMAX1142AEAP+SSOP,;20 pin;57.9 mm²-40°C to +85°CNo
MAX1142AEAP+ActiveSSOP,;20 pin;57.9 mm²-40°C to +85°CLead Free
MAX1142AEAP+TActiveSSOP,;20 pin;57.9 mm²-40°C to +85°CLead Free
MAX1142AEAP-TNo Longer AvailableMAX1142AEAP+TSSOP;20 pin-40°C to +85°CSee data sheet
MAX1142BCAPNo Longer AvailableMAX1142BCAP+SSOP,;20 pin;57.9 mm²0°C to +70°CNo
MAX1142BCAP+ActiveSSOP,;20 pin;57.9 mm²0°C to +70°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1142BCAP+TActiveSSOP,;20 pin;57.9 mm²0°C to +70°CLead Free
MAX1142BCAP-TNo Longer AvailableMAX1142BCAP+TSSOP;20 pin0°C to +70°CSee data sheet
MAX1142BEAPNo Longer AvailableMAX1142BEAP+SSOP,;20 pin;57.9 mm²-40°C to +85°CNo
MAX1142BEAP+ActiveSSOP,;20 pin;57.9 mm²-40°C to +85°CLead Free
MAX1142BEAP+TActiveSSOP,;20 pin;57.9 mm²-40°C to +85°CLead Free
MAX1142BEAP-TNo Longer AvailableMAX1142BEAP+TSSOP;20 pin-40°C to +85°CSee data sheet
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