Texas Instruments ADC101S051CIMF/NOPB

Overview

ADC101S051CIMF/NOPB from Texas Instruments is a single-channel, 10-bit successive-approximation ADC with SPI/QSPI/MICROWIRE/DSP-compatible serial interface, 200–500 ksps sample rate, ±0.15 LSB typical INL, and 61.6 dB typical SNR. It operates from a single 2.7V–5.25V supply and targets portable instrumentation and remote data acquisition systems requiring low power and compact packaging.

For engineers reviewing the ADC101S051CIMF/NOPB datasheet, ADC101S051CIMF/NOPB pinout, ADC101S051CIMF/NOPB application, or ADC101S051CIMF/NOPB equivalent, key selection considerations include its guaranteed no-missing-codes performance over −40°C to +85°C, 6-lead WSON package footprint, variable power management (2.7 mW at 3.6V), and compatibility with microprocessor/DSP host interfaces using standard 3-wire timing.

Technical Context

The ADC101S051CIMF/NOPB implements a charge-redistribution DAC core with internal track-and-hold, enabling precise sampling at up to 500 ksps across its full specified voltage and temperature range. Its conversion sequence is initiated by CS falling edge, with 16 SCLK cycles required per sample - three leading zeros, ten data bits (MSB first), and two trailing zeros.

It supports variable power management via CS-controlled shutdown mode, reducing consumption to 2.6 µW at +5.25V. The device uses straight-binary output coding, has aperture jitter of 30 ps, and maintains 9.9-bit ENOB at 100 kHz input under typical conditions.

Key Specifications

Pinout & Package

The ADC101S051CIMF/NOPB is packaged in a 6-lead 2.0 mm × 2.0 mm WSON (package code NGF0006A) with exposed thermal pad. Pin 1 is VA (analog supply), Pin 2 is GND, Pin 3 is VIN (analog input), Pin 4 is SCLK (serial clock), Pin 5 is SDATA (serial data out), and Pin 6 is CS (chip select). The center thermal pad must be connected to GND for thermal and electrical stability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10-bit SAR ADC applications.

Compared with ADC101S021CIMF/NOPB and ADC101S101CIMF/NOPB, the ADC101S051CIMF/NOPB delivers optimal balance of power efficiency, speed, and cost for mid-range data acquisition - offering guaranteed 500 ksps performance without the overhead of 1 Msps-rated silicon or the throughput limitation of the 200 ksps variant.

Availability

ADC101S051CIMF/NOPB is available at Aetrix Electronics and suitable for portable medical devices, industrial remote I/O modules, automotive climate control systems, and programmable logic controller analog inputs requiring stable component supply and long-term production continuity.

Supply support for ADC101S051CIMF/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, embedded processing, and connectivity technologies, with decades of leadership in precision data converters and industrial-grade ICs.

The ADC101S051CIMF/NOPB belongs to TI's precision SAR ADC product line, designed specifically for space-constrained, low-power applications in portable instrumentation, remote sensing, and automotive subsystems where reliability and consistent parametric performance are critical.

FAQ

What is the maximum sample rate supported by the ADC101S051CIMF/NOPB?

The ADC101S051CIMF/NOPB is fully specified for operation up to 500 ksps across its entire temperature and supply voltage range. While the device remains functional at up to 1 Msps per operating ratings, only the 200–500 ksps range guarantees all AC and DC specifications including INL, SNR, and THD. For designs requiring guaranteed 1 Msps performance, the pin-compatible ADC101S101CIMF/NOPB should be used instead.

Does the ADC101S051CIMF/NOPB require an external voltage reference?

No, the ADC101S051CIMF/NOPB uses its analog supply voltage (VA) as the reference, supporting a 0 V to VA input range. This eliminates the need for an external reference in most applications. However, if higher absolute accuracy or temperature stability is required beyond VA's drift characteristics, an external precision reference may be applied to VA - though this requires careful decoupling and validation per the datasheet's power supply recommendations.

What package type is used for the ADC101S051CIMF/NOPB?

The ADC101S051CIMF/NOPB is supplied in a 6-lead WSON package (2.0 mm × 2.0 mm, package code NGF0006A) with an exposed thermal pad. This RoHS-compliant, lead-free package requires connection of the center pad to GND for optimal thermal performance and signal integrity. It is not offered in SOT-23 for this specific part number (CIMF/NOPB suffix denotes WSON).

How does power management work on the ADC101S051CIMF/NOPB?

Power management is controlled via the CS pin: pulling CS high after the 10th SCLK falling edge (but before the 16th) places the ADC101S051CIMF/NOPB into shutdown mode, reducing supply current to 500 nA (typ) at +5.25 V. Normal operation resumes on the next CS falling edge. This allows dynamic throughput/power trade-offs - e.g., sampling once per second while spending >99.9% of time in shutdown - without firmware complexity or external enable circuitry.

Is the ADC101S051CIMF/NOPB compatible with 1.8 V logic interfaces?

No, the ADC101S051CIMF/NOPB digital inputs (CS, SCLK) tolerate voltages up to 6.5 V but require VIH ≥ 2.1 V at 3.6 V VA and ≥ 2.4 V at 5.25 V VA - making it incompatible with native 1.8 V logic without level shifting. Its SDATA output swings from 0 V to VA, so interfacing with 1.8 V receivers also requires level translation. For true 1.8 V–compatible operation, consider TI's ADS7822 or similar low-voltage SAR ADCs.