Texas Instruments ADS7830IPWTG4

Overview

ADS7830IPWTG4 from Texas Instruments is an 8-bit, 8-channel SAR analog-to-digital converter with integrated 2.5V reference, I²C™ interface, and TSSOP-16 package. It delivers ±0.5 LSB INL/DNL, supports 4 differential or 8 single-ended inputs, operates from 2.7V to 5V, and achieves up to 70 kSPS in High-Speed I²C mode - ideal for remote voltage monitoring and isolated transducer interfaces.

For engineers reviewing the ADS7830IPWTG4 datasheet, ADS7830IPWTG4 pinout, ADS7830IPWTG4 application, or ADS7830IPWTG4 equivalent, key selection considerations include its built-in 2.5V reference accuracy (±0.5% over temperature), channel multiplexing flexibility (A0/A1 address bits enabling up to four devices on one bus), and low-power operation across Standard/Fast/High-Speed I²C modes (180 µW to 675 µW).

Technical Context

The ADS7830IPWTG4 implements a capacitive redistribution SAR architecture with internal asynchronous clock and sample-and-hold amplifier. Its conversion core remains powered off between conversions, minimizing quiescent current. The device supports all three I²C modes (Standard: 100 kHz, Fast: 400 kHz, High-Speed: 3.4 MHz) and uses hardware-addressed command bytes (10010xxR/W) to select channels (CH0–CH7), input configuration (single-ended/differential), and power-down states.

It features dual reference operation: internal 2.5V buffered reference (2.47 V to 2.53 V, 40 ppm/°C drift over –40°C to +125°C) or external reference down to 50 mV. Input range scales directly with reference voltage, and noise contribution is specified at 100 µV_RMS, yielding ~0.02 LSB peak-to-peak error with 2.5V reference.

Key Specifications

Pinout & Package

TSSOP-16 package (PW designation), 4.4 mm × 5.0 mm × 1.2 mm body, 0.65 mm pitch, exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit SAR ADC applications.

Compared with ADS7828IPWR and MCP3221-AI/P, the ADS7830IPWTG4 uniquely combines 8-channel MUX, integrated 2.5V reference, differential capability, and 70 kSPS throughput in a compact TSSOP-16 - making it optimal for space-constrained, multi-sensor, battery-aware systems requiring minimal external components.

Availability

ADS7830IPWTG4 is available at Aetrix Electronics and suitable for voltage-supply monitoring, transducer interface, battery-operated systems, remote data acquisition, and isolated industrial sensing requiring stable component supply and long-term manufacturability.

Supply support for ADS7830IPWTG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with over 50 years of innovation in precision data converters and industrial-grade ICs.

The ADS7830IPWTG4 belongs to TI's precision SAR ADC product line, designed specifically for low-power, multi-channel sensor signal conditioning in harsh environments - emphasizing integration, reliability, and ease of I²C-based system integration.

FAQ

What is the maximum sampling rate of the ADS7830IPWTG4?

The ADS7830IPWTG4 achieves a maximum sampling rate of 70 kSPS in High-Speed I²C mode (SCL = 3.4 MHz). In Fast Mode (400 kHz), throughput drops to 10 kSPS, and in Standard Mode (100 kHz), it is 2.5 kSPS. Conversion time remains fixed at 5 µs regardless of I²C speed, as the internal SAR clock is asynchronous and independent of the bus clock.

Does the ADS7830IPWTG4 require an external reference voltage?

No - the ADS7830IPWTG4 includes a built-in, buffered 2.5V reference (2.47 V to 2.53 V over –40°C to +125°C) that can be used directly. An external reference may be applied via the REFIN/REFOUT pin if higher precision, different voltage (down to 50 mV), or better temperature stability is required. When external reference is used, the internal reference is automatically disabled.

How many devices can share the same I²C bus with the ADS7830IPWTG4?

Up to four ADS7830IPWTG4 devices can operate on the same I²C bus using hardware address pins A0 and A1. These pins set the two least-significant bits of the 7-bit slave address (base 10010xx), allowing unique addresses 0x48, 0x49, 0x4A, and 0x4B. No software configuration or EEPROM programming is needed - addressing is determined at power-up by A0/A1 logic levels.

What input configurations does the ADS7830IPWTG4 support?

The ADS7830IPWTG4 supports both 8 single-ended inputs (CH0–CH7 referenced to COM) and 4 differential input pairs (CH0–CH1, CH2–CH3, CH4–CH5, CH6–CH7), selected via the SD bit in the command byte. Differential mode improves noise rejection and enables true ratiometric measurements when COM is tied to sensor mid-point or reference divider.

What is the operating temperature range of the ADS7830IPWTG4?

The ADS7830IPWTG4 is fully specified from –40°C to +125°C ambient temperature. All key parameters - including INL/DNL (±0.5 LSB), reference voltage (2.47 V to 2.53 V), and supply current - are guaranteed across this extended industrial range, making it suitable for under-hood automotive, motor control, and outdoor industrial applications.