Texas Instruments ADC088S102CIMTX/NOPB

Overview

ADC088S102CIMTX/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 operation over −40°C to +105°C for industrial sensor data acquisition in portable instrumentation.

For engineers reviewing the ADC088S102CIMTX/NOPB datasheet, ADC088S102CIMTX/NOPB pinout, ADC088S102CIMTX/NOPB application, or ADC088S102CIMTX/NOPB equivalent, key selection criteria include channel count, SPI timing compliance at 8–16 MHz SCLK, independent VA/VD supply flexibility (2.7V–5.25V), low-power shutdown mode (0.03 µW @ 3V), and TSSOP-16 package compatibility with space-constrained embedded systems.

Technical Context

The ADC088S102CIMTX/NOPB implements a charge-redistribution SAR architecture with integrated track-and-hold, supporting up to eight single-ended analog inputs (IN0–IN7) and configurable channel selection via 3-bit address bits in an 8-bit control register. Conversion is initiated by CS falling edge and synchronized to SCLK (8–16 MHz).

It uses VA as both analog supply and reference voltage, enabling ratiometric measurement; digital I/O operates from VD (2.7V to VA), allowing mixed-supply system integration. The device transitions from 3-cycle track mode to 13-cycle hold/convert mode per frame, delivering 8-bit straight-binary output MSB-first on DOUT with leading/trailing zero padding.

Key Specifications

Pinout & Package

ADC088S102CIMTX/NOPB is packaged in a 16-lead TSSOP (Package Number PW0016A), with exposed pad not electrically connected. Pin spacing is 0.65 mm; body dimensions are 5.0 mm × 4.4 mm × 1.2 mm (max). Layout requires separate AGND/DGND planes tied at single point near device, plus local 1 µF + 0.1 µF ceramic bypassing on VA and 0.1 µF on VD.

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 ADC084S021CIMM/NOPB, ADC088S102CIMTX/NOPB uniquely delivers eight integrated analog inputs with full SPI timing compliance and dual-supply flexibility - making it the only option among the three that eliminates external multiplexing while maintaining 1 MSPS throughput and industrial temperature support.

Availability

ADC088S102CIMTX/NOPB is available at Aetrix Electronics and suitable for industrial motor control, portable medical devices, automotive navigation subsystems, and smart energy metering requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADC088S102CIMTX/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 signal chain solutions.

The ADC088S102CIMTX/NOPB belongs to TI's precision SAR ADC product line, designed specifically for cost-sensitive, multi-channel industrial and portable applications requiring low power, small size, and guaranteed monotonicity without calibration.

FAQ

What is the maximum clock frequency supported by ADC088S102CIMTX/NOPB?

The ADC088S102CIMTX/NOPB supports a maximum SCLK frequency of 16 MHz, with minimum specified frequency of 8 MHz. Operation outside this range may cause timing violations or incomplete conversions. At 16 MHz, the device achieves its rated 1 MSPS throughput with 16 SCLK cycles per conversion frame (3 track + 13 convert/readout). The ADC088S102CIMTX/NOPB datasheet specifies strict setup/hold times relative to SCLK edges, so clock jitter must remain below 1 ns RMS for reliable operation.

Does ADC088S102CIMTX/NOPB require external reference voltage?

No, ADC088S102CIMTX/NOPB does not require an external reference voltage. It uses the analog supply voltage (VA) as its internal reference, establishing a 0 V to VA input range. This ratiometric configuration rejects supply ripple and simplifies design - but requires VA to be low-noise and well-bypassed (1 µF + 0.1 µF ceramics within 1 cm). The ADC088S102CIMTX/NOPB specification assumes VA = VD for INL/DNL testing; mismatched supplies affect absolute accuracy but preserve monotonicity.

How is channel selection implemented on ADC088S102CIMTX/NOPB?

Channel selection on ADC088S102CIMTX/NOPB is controlled via a dedicated 8-bit control register loaded on DIN during the first 8 SCLK rising edges after CS falls. Bits ADD2–ADD0 (bits 5–3) determine the input channel (IN0–IN7) for the *next* conversion cycle, per Table 3 in the datasheet. Bits 7,6,2,1,0 are don't-care. The ADC088S102CIMTX/NOPB defaults to IN0 on power-up and retains the last selected channel unless reprogrammed - enabling deterministic sequencing without host software overhead.

What is the power consumption of ADC088S102CIMTX/NOPB in shutdown mode?

In shutdown mode (CS high), ADC088S102CIMTX/NOPB draws just 0.03 µW typical at 3.0 V and 0.15 µW typical at 5.0 V. This ultra-low quiescent power is achieved by disabling all internal logic, ADC core, and I/O drivers - placing DOUT in high-impedance state. Recovery to active conversion takes no additional delay: the first conversion after CS fall completes fully within 16 SCLK cycles. The ADC088S102CIMTX/NOPB datasheet confirms this behavior applies across the full −40°C to +105°C operating range.

Can ADC088S102CIMTX/NOPB operate with VA = 3.3 V and VD = 1.8 V?

No, ADC088S102CIMTX/NOPB cannot operate with VD = 1.8 V when VA = 3.3 V. Per Absolute Maximum Ratings and Operating Ratings, VD must be ≥2.7 V and ≤VA. A VD of 1.8 V violates the 2.7 V minimum and risks functional failure or damage. Valid configurations include VA = VD = 3.3 V, or VA = 3.3 V and VD = 3.3 V (same rail), or VA = 5.0 V and VD = 3.3 V. The ADC088S102CIMTX/NOPB digital I/O levels are referenced to VD, so logic thresholds scale accordingly - ensuring compatibility with 3.3 V or 5 V microcontrollers when VD matches their IO voltage.