Texas Instruments ADC088S102CIMT/NOPB

Overview

ADC088S102CIMT/NOPB from Texas Instruments is an 8-channel, 8-bit successive-approximation ADC with SPI-compatible serial interface, 500 kSPS to 1 MSPS throughput, ±0.2 LSB INL (max), and independent analog/digital supplies (VA: 2.7–5.25 V, VD: 2.7–VA). It operates across −40°C to +105°C and is used in portable instrumentation for multi-sensor voltage monitoring.

For engineers reviewing the ADC088S102CIMT/NOPB datasheet, ADC088S102CIMT/NOPB pinout, ADC088S102CIMT/NOPB application, or ADC088S102CIMT/NOPB equivalent, key selection factors include channel count, SPI timing compatibility, track-and-hold acquisition time (3 SCLK cycles), power-down current (30 nA at 5 V), and TSSOP-16 package thermal resistance (96°C/W).

Technical Context

The ADC088S102CIMT/NOPB uses a charge-redistribution DAC architecture with internal track-and-hold, enabling full-resolution acquisition in the first conversion after power-up. Its multiplexer selects one of eight analog inputs (IN0–IN7) under control of a user-loaded 8-bit register with three address bits (ADD2–ADD0).

Serial communication follows SPI/QSPI/MICROWIRE conventions: CS initiates frame transfer, SCLK (8–16 MHz) clocks both conversion and data, DOUT outputs 16-bit frames (4 leading zeros + 8-bit result + 4 trailing zeros, MSB-first), and DIN loads channel selection on rising SCLK edges during the first 8 cycles of each frame.

Key Specifications

Pinout & Package

ADC088S102CIMT/NOPB is housed in a 16-lead TSSOP (Package Code PW0016A) with 0.65 mm pitch, 5.0 mm × 4.4 mm body, and exposed pad not connected internally. 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-bit, multi-channel SAR ADC applications.

Compared with ADS7822U and MAX11100ETE+, the ADC088S102CIMT/NOPB uniquely balances 8-channel flexibility, independent supply rails, and ultra-low shutdown power-making it optimal for battery-aware industrial and automotive systems requiring analog domain control.

Availability

ADC088S102CIMT/NOPB is available at Aetrix Electronics and suitable for automotive navigation systems, portable medical instruments, and industrial control systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADC088S102CIMT/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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, precision, and energy efficiency.

The ADC088S102CIMT/NOPB belongs to TI's precision data converter portfolio, designed specifically for cost-optimized, multi-channel sensor signal acquisition in space- and power-constrained embedded systems.

FAQ

What is the minimum SCLK frequency supported by the ADC088S102CIMT/NOPB?

The ADC088S102CIMT/NOPB specifies a minimum SCLK frequency of 0.8 MHz per absolute maximum ratings, but functional operation requires ≥8 MHz for guaranteed 500 kSPS to 1 MSPS throughput. At 8 MHz, total conversion + acquisition time is 16 SCLK cycles (16 × 125 ns = 2 µs), matching the 1 MSPS rate. Lower frequencies reduce sample rate proportionally and may violate timing margins for DOUT access and hold.

Does the ADC088S102CIMT/NOPB require external reference voltage?

No, the ADC088S102CIMT/NOPB uses VA as its internal reference voltage-no external reference is needed. The LSB size is VA/256, so full-scale input range is exactly 0 V to VA. This simplifies design but requires VA to be low-noise and stable; TI recommends bypassing VA with 1 µF and 0.1 µF ceramic capacitors placed within 1 cm of the pin.

How does the ADC088S102CIMT/NOPB handle channel selection during continuous conversion mode?

In continuous conversion mode, the ADC088S102CIMT/NOPB uses the control register loaded on DIN during the first 8 SCLK cycles of each frame to select the next channel. After completing a 16-cycle frame (including leading/trailing zeros), it automatically re-enters track mode on the next SCLK falling edge and begins acquisition for the newly selected channel-enabling seamless round-robin or programmable sequencing without host intervention between conversions.

Can the ADC088S102CIMT/NOPB operate with VA = 3.3 V and VD = 1.8 V?

No-the ADC088S102CIMT/NOPB requires VD ≤ VA, and VD must be ≥2.7 V per operating ratings. Setting VD = 1.8 V violates the 2.7 V minimum digital supply specification and risks improper logic-level recognition on DIN, CS, and SCLK. Valid configurations include VA = VD = 3.3 V or VA = 5.0 V / VD = 3.3 V, but VD cannot be less than 2.7 V or exceed VA.

What is the aperture delay of the ADC088S102CIMT/NOPB and how does it affect sampling accuracy?

The ADC088S102CIMT/NOPB has a specified aperture delay of 4 ns-defined as the time between the fourth falling edge of SCLK and internal sampling of the analog input. This fixed, short delay enables precise synchronization with external events when using SCLK as a timing reference, and contributes negligibly to total sampling uncertainty compared to acquisition time (3 SCLK cycles) and clock jitter in typical 8–16 MHz implementations.