Texas Instruments ADC088S052CIMTX

Overview

ADC088S052 from Texas Instruments is an 8-channel, 8-bit successive-approximation ADC with 200–500 ksps throughput, independent analog/digital supplies (VA = 2.7–5.25 V, VD = 2.7–VA), and SPI/QSPI/MICROWIRE-compatible serial interface. It operates across −40°C to +105°C and delivers ±0.2 LSB INL/DNL, 49.2 dB SINAD, and 7.88-bit ENOB for precision sensor and control signal digitization in automotive navigation and portable instrumentation.

For engineers reviewing the ADC088S052 datasheet, ADC088S052 pinout, ADC088S052 application, or ADC088S052 equivalent, key selection considerations include its 16-pin TSSOP package, channel-selectable input multiplexing (IN0–IN7), power-down mode (0.03 µW at 3 V), track-and-hold architecture, and straight-binary output format compatible with microcontroller SPI peripherals.

Technical Context

The ADC088S052 implements a charge-redistribution DAC-based successive-approximation architecture with integrated track-and-hold. Its conversion cycle requires 16 SCLK periods: 3 cycles for acquisition (track) and 13 for conversion and readout (hold), enabling deterministic timing control via CS and SCLK.

It supports independent VA and VD supplies, allowing analog domain isolation from digital noise; VA serves as both supply and reference. The serial interface uses MSB-first straight-binary output on DOUT, with channel address loaded via DIN during the first 8 rising SCLK edges after CS fall-enabling dynamic channel selection per conversion.

Key Specifications

Pinout & Package

ADC088S052 is housed in a 16-lead TSSOP (Thin Shrink Small Outline Package) with 0.65 mm pitch, optimized for compact PCB layouts and thermal performance (θ_JA = 96°C/W).

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+, ADC088S052 provides superior analog-domain control via independent VA/VD rails and dedicated AGND/DGND pins-making it the preferred choice for designs demanding low-noise measurement integrity in electrically noisy environments.

Availability

ADC088S052 is available at Aetrix Electronics and suitable for automotive navigation systems, portable medical instruments, industrial process control modules, and mobile communications baseband applications requiring stable component supply across extended temperature ranges and long production lifecycles.

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 specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision data converters and industrial-grade ICs.

The ADC088S052 belongs to TI's precision SAR ADC product line, designed specifically for cost-sensitive, multi-channel, medium-speed digitization in harsh-environment applications such as automotive, industrial, and portable instrumentation.

FAQ

What is the maximum clock frequency supported by ADC088S052?

The ADC088S052 supports a maximum SCLK frequency of 8 MHz under normal operating conditions (VA = VD = 2.7–5.25 V, TA = −40°C to +105°C). While the absolute maximum rating permits up to 16 MHz, guaranteed AC performance-including 500 ksps throughput and ±0.2 LSB linearity-is specified only up to 8 MHz. Exceeding this may degrade SNR and increase DNL beyond limits.

Does ADC088S052 require an external reference voltage?

No, ADC088S052 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 external reference components and simplifies design, though VA must be stable and low-noise-TI recommends bypassing with 1 µF and 0.1 µF ceramics within 1 cm of the VA pin.

How is channel selection implemented in ADC088S052?

Channel selection in ADC088S052 is performed via the 3-bit ADD2–ADD0 field in the 8-bit control register loaded on DIN during the first 8 rising SCLK edges after CS falls. Valid combinations (000 to 111) map directly to IN0 through IN7. The default channel is IN0, and the selected channel applies to the *next* conversion-not the current one-enabling pipelined multi-channel sequencing.

What is the power consumption of ADC088S052 in shutdown mode?

In shutdown mode (CS high, SCLK inactive), ADC088S052 draws 0.03 µW typical at 3 V and 0.15 µW typical at 5 V. This ultra-low quiescent power is achieved by disabling internal bias circuits and placing DOUT in high-impedance state. Recovery to full operation occurs within one SCLK cycle after CS goes low-no wake-up delay or dummy conversion is needed.

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

No, 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, valid VD range at VA = 3.3 V is 2.7 V to 3.3 V. Using 1.8 V violates the minimum VD specification and risks logic failure, undefined DOUT levels, and potential damage due to reverse-biasing internal protection structures.