Texas Instruments ADC088S052CIMT

Overview

ADC088S052 from Texas Instruments is an 8-channel, 8-bit successive-approximation ADC with 200–500 ksps throughput, ±0.2 LSB INL/DNL, and independent analog/digital supplies (VA: 2.7–5.25 V, VD: 2.7–VA). It interfaces via SPI/QSPI/MICROWIRE-compatible serial interface and operates across −40°C to +105°C for automotive navigation and portable instrumentation.

For engineers reviewing the ADC088S052 datasheet, ADC088S052 pinout, ADC088S052 application, or ADC088S052 equivalent, this page delivers verified electrical specs, validated TSSOP-16 pin mapping, confirmed channel-to-channel isolation (67.3 dB), real-world power-down behavior (0.03 µW @ 3 V), and two field-tested alternative parts for multi-supply 8-bit SAR ADC designs.

Technical Context

The ADC088S052 implements a charge-redistribution DAC architecture with internal track-and-hold, acquiring input voltage over 3 SCLK cycles and completing conversion in 13 additional cycles (total 16 SCLK per frame). Its multiplexer supports dynamic channel selection via 3-bit address (ADD2–ADD0) loaded on DIN during each conversion cycle.

It features separate AGND/DGND pins, dual supply operation with VA serving as reference, and digital I/O compatible with 2.7–5.25 V logic levels. The DOUT output is high-impedance when CS is high, and data is MSB-first straight binary with leading/trailing zero padding.

Key Specifications

Pinout & Package

Packaged in a 16-lead TSSOP (Thin Shrink Small Outline Package) with 0.65 mm pitch, JEDEC MO-153 compliant, thermal resistance θ_JA = 96°C/W on 4-layer PCB.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7822U and MAX11100ETE+, the ADC088S052 uniquely balances low power (1.2 mW), true dual-supply operation, and guaranteed 8-bit linearity across −40°C to +105°C-making it optimal for thermally demanding, battery-sensitive multi-channel sensing where supply domain isolation is essential.

Availability

ADC088S052 is available at Aetrix Electronics and suitable for automotive navigation, portable medical monitors, industrial process controllers, and wireless sensor node hubs requiring stable component supply across extended temperature ranges.

Supply support for ADC088S052 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 delivering analog, embedded processing, and connectivity solutions with deep expertise in precision data converters and industrial-grade reliability.

The ADC088S052 belongs to TI's precision SAR ADC product line, engineered for cost-sensitive, multi-channel sensor acquisition in harsh environments where dual-supply operation and guaranteed linearity are mandatory.

FAQ

What is the maximum clock frequency supported by the ADC088S052?

The ADC088S052 supports a maximum SCLK frequency of 8 MHz under normal operation, with a tested upper limit of 16 MHz. At 8 MHz, it achieves its rated 500 ksps throughput using 16 SCLK cycles per conversion frame. Exceeding 8 MHz may impact timing margins for DIN setup/hold and DOUT access, especially across temperature extremes.

Does the ADC088S052 require an external reference voltage?

No, the ADC088S052 does not require an external reference. It uses the VA supply pin as both the analog power source and the reference voltage (VREF = VA), with LSB = VA / 256. This simplifies design by eliminating external reference components while maintaining 8-bit accuracy across VA = 2.7–5.25 V.

How is channel selection implemented on the ADC088S052?

Channel selection is performed via a 3-bit address (ADD2–ADD0) loaded into the ADC088S052's control register on DIN during the first 3 rising edges of SCLK after CS falls. The address determines which of IN0–IN7 will be sampled in the *next* conversion cycle, enabling dynamic, software-controlled multiplexing without reconfiguring hardware.

What is the purpose of the DONTC bits in the ADC088S052 control register?

The DONTC bits (bits 7, 6, 2, 1, 0) in the ADC088S052 control register are "don't care" positions - their values have no effect on device operation. Only bits 5–3 (ADD2–ADD0) are functional for channel selection. This allows flexible firmware implementation where unused bits can be set to zero or ignored during register writes.

Can the ADC088S052 operate with VA = 3.3 V and VD = 1.8 V?

No, the ADC088S052 cannot operate with VD = 1.8 V when VA = 3.3 V. Per the datasheet, VD must be ≥2.7 V and ≤VA. Therefore, VD = 1.8 V violates the minimum supply requirement and falls outside the specified operating range. Valid configurations include VD = 2.7–3.3 V when VA = 3.3 V.