Texas Instruments ADC088S022CIMT/NOPB

Overview

ADC088S022CIMT/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 low-power front-end digitizer in automotive navigation sensor hubs and portable medical instrumentation.

For engineers reviewing the ADC088S022CIMT/NOPB datasheet, ADC088S022CIMT/NOPB pinout, ADC088S022CIMT/NOPB application, or ADC088S022CIMT/NOPB equivalent, key selection factors include channel count (8), DNL/INL (±0.2 LSB max), power-down current (30 nA at 5 V), TSSOP-16 package compatibility, and straight-binary output format with configurable input channel addressing via DIN control register.

Technical Context

The ADC088S022CIMT/NOPB implements a charge-redistribution DAC-based successive-approximation architecture with integrated track-and-hold. Its conversion cycle requires 16 SCLK periods: 3 for acquisition (track mode) and 13 for hold, approximation, and serial readout (MSB-first, 8-bit result embedded in 16-bit frame).

It supports independent VA and VD supplies, enabling noise isolation between analog and digital domains. The analog input range is 0 V to VA, with input capacitance of 33 pF (track) / 3 pF (hold), requiring low-impedance (<100 Ω) driving sources and anti-aliasing filtering for dynamic signals.

Key Specifications

Pinout & Package

Packaged in a 16-lead TSSOP (4.4 mm × 5.0 mm, 0.65 mm pitch), the ADC088S022CIMT/NOPB features separate analog/digital ground pins (AGND, DGND) and dual supply rails (VA, VD) for noise-sensitive mixed-signal applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7822U and MAX11100ETE+, the ADC088S022CIMT/NOPB uniquely combines 8-channel count, VA-as-reference flexibility, sub-1 mW 3 V operation, and extended temperature qualification-making it optimal for space- and power-constrained industrial and automotive sensor interfaces.

Availability

ADC088S022CIMT/NOPB is available at Aetrix Electronics and suitable for automotive navigation systems, portable medical instrumentation, industrial temperature controllers, and smart building HVAC sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADC088S022CIMT/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 company specializing in analog and embedded processing technologies, with leadership in data converters, power management, and interface ICs.

The ADC088S022CIMT/NOPB belongs to TI's precision SAR ADC product line, designed specifically for cost-sensitive, low-power, multi-channel sensor digitization in automotive, industrial, and portable applications.

FAQ

What is the maximum clock frequency supported by the ADC088S022CIMT/NOPB?

The ADC088S022CIMT/NOPB supports a maximum SCLK frequency of 3.2 MHz, as specified in its AC Electrical Characteristics table. At this rate, the device achieves its top throughput of 200 ksps with a 16-SCLK conversion frame. Exceeding 3.2 MHz may cause timing violations, data corruption, or failure to meet DNL/INL specifications. The minimum clock is 0.8 MHz, allowing flexible trade-offs between speed and power in battery-operated systems using the ADC088S022CIMT/NOPB.

Does the ADC088S022CIMT/NOPB require an external reference voltage?

No, the ADC088S022CIMT/NOPB does not require an external reference voltage. It uses the analog supply voltage (VA) as its internal reference, with full-scale range defined as 0 V to VA. This eliminates the need for a separate precision reference IC, simplifying the BOM and layout. The ADC088S022CIMT/NOPB maintains ±0.2 LSB INL and ±0.2 LSB DNL across VA = 2.7 V to 5.25 V, ensuring consistent accuracy regardless of VA setting within spec.

How is channel selection implemented on the ADC088S022CIMT/NOPB?

Channel selection on the ADC088S022CIMT/NOPB is performed via a 3-bit address field (ADD2–ADD0) in the 8-bit control register loaded on DIN during the first 8 SCLK rising edges after CS falls. Valid combinations map directly to IN0 through IN7 (e.g., 000 = IN0, 111 = IN7). The remaining 5 bits (DONTC) are ignored. This allows dynamic, software-controlled sequencing without hardware reconfiguration, and the ADC088S022CIMT/NOPB defaults to IN0 on power-up.

What is the power consumption of the ADC088S022CIMT/NOPB in shutdown mode?

In shutdown mode (CS high), the ADC088S022CIMT/NOPB draws just 10 nA at 2.7 V and 30 nA at 5.0 V, as confirmed in its Power Supply Characteristics table. This ultra-low quiescent current enables aggressive power gating in energy-harvesting or coin-cell-powered systems. Recovery to active conversion takes no additional delay-the first conversion after CS assertion is valid and fully resolved, with no dummy cycles required. This behavior is guaranteed across the full −40°C to +105°C range for the ADC088S022CIMT/NOPB.

Can the ADC088S022CIMT/NOPB operate with different analog and digital supply voltages?

Yes, the ADC088S022CIMT/NOPB supports independent analog (VA) and digital (VD) supplies, with VD constrained to 2.7 V ≤ VD ≤ VA. This allows, for example, VA = 5.0 V (for higher SNR and wider input range) and VD = 3.3 V (to interface with 3.3 V microcontrollers), provided VD does not exceed VA. The absolute maximum rating limits VD to VA + 0.3 V, so exceeding this margin risks ESD diode conduction and potential damage. Proper decoupling-1 µF + 0.1 µF for VA, 0.1 µF for VD-is mandatory to maintain performance of the ADC088S022CIMT/NOPB.