Texas Instruments ADC088S022CIMTX/NOPB

Overview

ADC088S022CIMTX/NOPB from Texas Instruments is an 8-channel, 8-bit successive-approximation ADC with 50–200 ksps throughput, independent analog/digital supplies (VA = 2.7–5.25 V, VD = 2.7–VA), SPI/QSPI/MICROWIRE-compatible serial interface, and operation over −40°C to +105°C. It serves as a compact, low-power data acquisition front-end in automotive navigation sensors and portable medical instrumentation.

For engineers reviewing the ADC088S022CIMTX/NOPB datasheet, ADC088S022CIMTX/NOPB pinout, ADC088S022CIMTX/NOPB application, or ADC088S022CIMTX/NOPB equivalent, key selection factors include its 16-pin TSSOP package, channel-selectable input multiplexing (IN0–IN7), ±0.2 LSB max INL/DNL, 0.9 mW typical power at 3 V, and guaranteed no missing codes across temperature.

Technical Context

The ADC088S022CIMTX/NOPB implements a charge-redistribution DAC-based successive-approximation architecture with integrated track-and-hold. Its 3-cycle acquisition and 13-cycle conversion timing yields a fixed 16-SCLK throughput period per sample, supporting deterministic serial readout.

It features fully independent analog and digital supply domains (VA and VD), enabling noise isolation between signal chain and controller interface. The control register accepts 8-bit SPI commands for channel selection (ADD2–ADD0) and supports continuous conversion mode without dummy cycles or power-up delay.

Key Specifications

Pinout & Package

ADC088S022CIMTX/NOPB is housed in a 16-lead Thin Shrink Small Outline Package (TSSOP) with 0.65 mm pitch, optimized for high-density PCB layouts and thermal performance (θ_JA = 96°C/W on 4-layer board).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7822U and MAX11100ETE+, ADC088S022CIMTX/NOPB delivers superior thermal robustness (−40°C to +105°C), lower active power (0.9 mW vs. ≥3.5 mW), and true dual-supply independence-making it optimal for automotive and industrial edge nodes where supply noise and ambient extremes dominate design constraints.

Availability

ADC088S022CIMTX/NOPB is available at Aetrix Electronics and suitable for automotive navigation systems, portable medical devices, and industrial process monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADC088S022CIMTX/NOPB 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 decades of expertise in precision data converters and automotive-grade ICs.

The ADC088S022CIMTX/NOPB belongs to TI's precision SAR ADC product line, engineered for low-power, multi-channel data acquisition in harsh-environment applications including automotive subsystems and portable instrumentation.

FAQ

What is the maximum clock frequency supported by ADC088S022CIMTX/NOPB?

The ADC088S022CIMTX/NOPB supports a maximum SCLK frequency of 3.2 MHz, with a minimum of 0.8 MHz. At 3.2 MHz, the device achieves its full 200 ksps throughput rate, completing each conversion and serial readout in exactly 16 SCLK cycles. Operation outside this range may result in timing violations or degraded AC performance such as reduced SINAD.

Does ADC088S022CIMTX/NOPB require an external voltage reference?

No, ADC088S022CIMTX/NOPB uses its VA supply pin as the internal reference voltage. The full-scale input range is 0 V to VA, and LSB size equals VA/256. This eliminates the need for an external reference, reducing BOM count and layout complexity-provided VA is well-bypassed and low-noise.

How does the power-down mode function in ADC088S022CIMTX/NOPB?

ADC088S022CIMTX/NOPB enters power-down mode when CS is held high. In this state, total supply current drops to 10 nA at 3 V (0.03 µW), effectively halting conversion and placing DOUT in high-impedance. Recovery is immediate: the first conversion after CS goes low completes in full resolution with no warm-up delay or dummy cycle required.

Can ADC088S022CIMTX/NOPB interface directly with a 1.8 V microcontroller?

No-ADC088S022CIMTX/NOPB digital I/O (CS, SCLK, DIN) operate from 0 V to VA, and DOUT output levels are referenced to VD. With VA ≥ 2.7 V minimum, it cannot accept 1.8 V logic inputs nor drive 1.8 V–tolerant receivers without level-shifting. It is designed for 2.7–5.25 V logic domains only.

What is the purpose of the DONTC bits in the ADC088S022CIMTX/NOPB control register?

The DONTC bits (bits 7, 6, 2, 1, 0) in the ADC088S022CIMTX/NOPB control register are "don't care" fields-writing any value (0 or 1) to them has no effect on operation. Only bits 5–3 (ADD2–ADD0) determine channel selection (IN0–IN7). This simplifies firmware implementation by allowing arbitrary fill values in unused register positions.