Measuring system microchip ADC128S102

convertermulti-channelsensor signal conditioner

Overview
The ADC128S102 is a low-power, eight-channel CMOS 12-bit successive-approximation-register (SAR) analog-to-digital converter with an internal track-and-hold. It accepts up to eight single-ended inputs (IN0–IN7) in a multiplexed configuration and delivers straight-binary serial output compatible with SPI, QSPI, MICROWIRE and common DSP serial interfaces. The device supports independent analog (VA) and digital (VD) supplies and is specified for conversion rates from 500 ksps to 1 MSPS.

Features

• 8 single-ended input channels (IN0–IN7)
• 12-bit resolution, SAR architecture with internal track-and-hold
• Conversion throughput: 500 ksps to 1 MSPS (selectable/operational range)
• Straight-binary serial output: SPI / QSPI / MICROWIRE / DSP compatible
• Independent analog (VA) and digital (VD) supplies: VA = +2.7 V to +5.25 V, VD = +2.7 V to VA
• Low-power operation and power-down mode
• Packaged in 16‑lead TSSOP

Specifications
Resolution: 12 bits
Maximum sample rate: 1000 ksps (1 MSPS)
Channels: 8 (single-ended)
Architecture: SAR (successive-approximation register)
Input type: Single-ended, multiplexed
Input voltage range: 0 V to 5.25 V (max)
Analog supply (VA): 2.7 V to 5.25 V
Digital supply (VD): 2.7 V to VA
Typical power consumption: 2.3 mW (@3 V), 10.7 mW (@5 V)
Power-down current: 0.06 µW (@3 V), 0.25 µW (@5 V)
SNR: 73 dB (typical)
DNL (VA = VD = 5.0 V): +1.5 / –0.9 LSB (max)
INL (VA = VD = 5.0 V): ±1.2 LSB (max)
Operating temperature range: −40 °C to +105 °C (industrial)

Package | Pins | Size
Package: 16‑lead TSSOP (PW)
Pins: 16
Size: 32 mm² (5 x 6.4)

Applications

• Data acquisition front-ends for multi-sensor arrays
• Industrial measurement and control systems
• Portable and battery-powered instruments requiring low power
• Interfaces to DSPs and microcontrollers using SPI/MICROWIRE