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ADS7953SRHBT

TIADS7953SRHBT

Texas Instruments
12 Bit Analog to Digital Converter 16 Input 1 SAR 32-VQFN (5x5)
Active605 in stock
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Overview

The ADS7953SRHBT is a high-density, 12-bit Successive Approximation Register (SAR) Analog-to-Digital Converter featuring 16 single-ended input channels. It operates with a high-speed SPI-compatible interface and supports sample rates up to 1 MSPS, making it ideal for monitoring a large number of analog signals with minimal board space. The device includes flexible channel scanning modes, programmable alarm thresholds, and an integrated GPIO for system-level control.

Why Choose This Part

The 16-channel multiplexer provides exceptional channel density in a compact 5x5mm VQFN package. Its zero-latency architecture and low power consumption of 2.3mA at 1MHz make it suitable for power-sensitive high-speed monitoring. The inclusion of programmable alarms per channel and an onboard GPIO reduces the processing overhead on the host microcontroller.

Applications

Industrial PLC Modules
Used in Programmable Logic Controllers to monitor multiple sensor inputs including pressure, flow, and temperature transmitters.
Optical Networking
Monitoring bias currents and power levels across multiple channels in optical line cards.
Battery Management Systems
Scanning individual cell voltages or temperature sensors across a large battery stack.
Robot Joint Sensing
Aggregating analog feedback from multiple encoders or strain gauges in multi-axis robotic arms.

Key Specifications

Input Type Single Ended
Architecture SAR
Configuration MUX-S/H-ADC
Mounting Type Surface Mount
Data Interface SPI
Number of Bits 12
Package / Case 32-VFQFN Exposed Pad
Reference Type External
Ratio - S/H:ADC 1:1
Number of Inputs 16
Operating Temperature -40degC ~ 125degC
Supplier Device Package 32-VQFN (5x5)
Number of A/D Converters 1
Voltage - Supply, Analog 2.7V ~ 5.25V
Voltage - Supply, Digital 1.7V ~ 5.25V
Sampling Rate (Per Second) 1M

Getting Started

Evaluation can be performed using the ADS7953EVM-PDK, which includes the necessary software to exercise the SPI interface and channel sequencing. When designing the PCB, ensure a low-impedance external reference is provided as the device requires an external voltage source for the ADC conversion scale. Firmware should implement the Auto-1 or Auto-2 scanning modes to automate channel switching and maximize throughput.

ADS7953 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
ADS7953SRHBT (this part) VFQFN-32 605
ADS7953SDBTR Tape & Reel TFSOP-38 10,618
ADS7953SBRHBT VFQFN-32 850