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+2.7V, Low-Power, 2-Channel, 108ksps, Serial 10-Bit ADCs in 8-Pin µMAX

Smallest 2-Channel 10-Bit ADCs

Product Details

Key Features

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 10
# Input Channels 2
Conv. Rate (ksps) (max) 108
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
External VREF (V) (min) 0
External VREF (V) (max) 5.25
Unipolar VIN (V) (max) 5.25
INL (±LSB) 1
Package/Pins PDIP/8
UMAX/8
Budgetary
Price (See Notes)
4.96
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Simplified Block Diagram

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Parameters

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 10
# Input Channels 2
Conv. Rate (ksps) (max) 108
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
External VREF (V) (min) 0
External VREF (V) (max) 5.25
Unipolar VIN (V) (max) 5.25
INL (±LSB) 1
Package/Pins PDIP/8
UMAX/8
Budgetary
Price (See Notes)
4.96

Key Features

  • Single-Supply Operation (+2.7V to +5.25V)
  • Two Single-Ended Channels (MAX157)
  • Single Pseudo-Differential Channel (MAX159)
  • Low Power
    • 0.9mA (at 108ksps, +3V)
    • 100µA (at 10ksps, +3V)
    • 10µA (at 1ksps,+3V)
    • < 0.2µA (power-down mode)
  • Internal Track/Hold
  • 108ksps Sampling Rate
  • SPI/QSPI/MICROWIRE-Compatible 3-Wire Serial Interface
  • Space-Saving 8-Pin µMAX Package
  • Pin-Compatible 12-Bit Upgrades Available

Applications/Uses

  • Battery-Powered Applications
  • Instrumentation
  • Isolated Data Acquisition
  • Medical Instruments
  • Portable Data Logging
  • Process Control Monitoring
  • System Supervision
  • Test Equipment

Description

The MAX157/MAX159 low-power, 10-bit analog-to-digital converters (ADCs) are available in 8-pin µMAX® and DIP packages. Both devices operate with a single +2.7V to +5.25V supply and feature a 7.4µs successive-approximation ADC, automatic power-down, fast wake-up (2.5µs), an on-chip clock, and a high-speed, 3-wire serial interface.

Power consumption is only 3.2mW (VDD = +3.6V) at the maximum sampling rate of 108ksps. At slower throughput rates, the 0.2µA automatic shutdown further reduces power consumption.

The MAX157 provides 2-channel, single-ended operation and accepts input signals from 0 to VREF. The MAX159 accepts pseudo-differential inputs ranging from 0 to VREF. An external clock accesses data through the 3-wire serial interface, which is SPI™, QSPI™, and MICROWIRE™ compatible.

Excellent dynamic performance and low power, combined with ease of use and a small package size, make these converters ideal for battery-powered and data acquisition applications, or for other circuits with demanding power-consumption and space requirements. For pin-compatible 12-bit upgrades, see the MAX144/MAX145 data sheet.

Simplified Block Diagram

MAX157, MAX159: Pin Configuration MAX157, MAX159: Pin Configuration Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .