1 Features

1• 16-bit Resolution With No Missing Codes

• Ensured Performance from 50 to 250 kSPS

• ±0.003% Signal Span Accuracy

• Separate Digital Input/Output Supply

• True Differential Input

• External Voltage Reference Range of 0.5 V to VA

• Zero-Power Track Mode with 0-μsec Wake-up

Delay

• Wide Input Common-mode Voltage Range of 0 V

to VA

• SPI/QSPI™/MICROWIRE™ Compatible Serial

Interface

• Operating Temperature Range of −40°C to +85°C

• Small VSSOP-10 Package

• Key Specifications

– Conversion Rate 50 to 250 kSPS

– DNL +0.8 / −0.5 LSB

– INL ±0.8 LSB

– Offset Error Temp Drift 2.5 μV/°C

– Gain Error Temp Drift 0.3 ppm/°C

– SNR 93.2 dBc

– THD − 104 dBc

– Power Consumption

– 10 kSPS, 5 V 0.24 mW

– 200 kSPS, 5 V 5.3 mW

– 250 kSPS, 5 V 5.8 mW

– Power-Down, 5 V 10 μW

2 Applications

• Direct Sensor Interface

• I/O Modules

• Data Acquisition

• Portable Systems

• Motor Control

• Medical Instruments

• Instrumentation and Control Systems

3 Description

The ADC161S626 is a 16-bit successive-

approximation register (SAR) Analog-to-Digital converter (ADC) with a maximum sampling rate of

250 kSPS. The ADC161S626 has a minimum signal

span accuracy of ±0.003% over the temperate range

of −40°C to +85°C. The converter features a differential analog input with an excellent common-

mode signal rejection ratio of 85 dB, making the

ADC161S626 suitable for noisy environments.

The ADC161S626 operates with a single analog

supply (VA) and a separate digital input/output (VIO)

supply. VA can range from 4.5 V to 5.5 V and VIO can

range from 2.7 V to 5.5 V. This allows a system

designer to maximize performance and minimize

power consumption by operating the analog portion of

the ADC at a VA of 5 V while interfacing with a 3.3-V

controller. The serial data output is binary 2's

complement and is SPI compatible.

The performance of the ADC161S626 is ensured

over temperature at clock rates of 1 MHz to 5 MHz

and reference voltages of 2.5 V to 5.5 V. The ADC161S626 is available in a small 10-lead VSSOP

package. The high accuracy, differential input, low

power consumption, and small size make the

ADC161S626 ideal for direct connection to bridge sensors and transducers in battery operated systems

or remote data acquisition applications.