Texas Instruments ADC101S101CIMF/NOPB

Overview

ADC101S101CIMF/NOPB from Texas Instruments is a single-channel, 10-bit successive-approximation ADC with SPI/QSPI/MICROWIRE-compatible serial interface, 500 ksps to 1 Msps sample rate range, ±0.2 LSB typical INL, and operation from 2.7V to 5.25V supply-used for precision analog monitoring in portable instrumentation and remote data acquisition systems.

For engineers reviewing the ADC101S101CIMF/NOPB datasheet, ADC101S101CIMF/NOPB pinout, ADC101S101CIMF/NOPB application, or ADC101S101CIMF/NOPB equivalent, key selection considerations include guaranteed performance across full 500 ksps–1 Msps range, low-power shutdown mode (2.5 µW at 5V), straight-binary output format, and compatibility with microprocessor/DSP three-wire interfaces.

Technical Context

The ADC101S101CIMF/NOPB implements a charge-redistribution DAC core with internal track-and-hold, enabling precise sampling at up to 1 Msps without external hold circuitry. Its conversion timing is fully synchronized to the SCLK falling edge, with aperture jitter of 30 ps and acquisition time of 350 ns.

It operates in two modes: normal (CS low) for continuous conversion with 2.0 mW power at 3V, and shutdown (CS high) reducing consumption to 2.5 µW. The device uses VA as both supply and reference, requiring clean bypassing (1 µF + 0.1 µF) to maintain 62 dB SNR and 9.9 ENOB.

Key Specifications

Pinout & Package

ADC101S101CIMF/NOPB is housed in a 6-lead WSON package (2.0 mm × 2.0 mm, 0.5 mm pitch) with exposed thermal pad. Pin 1 is VA (analog supply), Pin 2 is GND, Pin 3 is VIN (single-ended analog input), Pin 4 is SCLK (serial clock input), Pin 5 is SDATA (serial data output), and Pin 6 is CS (chip select input).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADC101S051CIMF/NOPB and ADS7822U, ADC101S101CIMF/NOPB uniquely delivers guaranteed 10-bit performance at 1 Msps in a 2×2 mm WSON package with single-supply simplicity-making it optimal for space-constrained, medium-speed embedded systems requiring predictable timing and low quiescent power.

Availability

ADC101S101CIMF/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, remote data acquisition, and industrial control systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for ADC101S101CIMF/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 specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision data converters and industrial-grade IC design.

The ADC101S101CIMF/NOPB belongs to TI's precision SAR ADC family engineered for low-power, single-supply operation in space-constrained embedded systems-targeting applications where size, power, and guaranteed mid-speed performance outweigh ultra-high resolution or multi-channel density.

FAQ

What is the maximum guaranteed sample rate for ADC101S101CIMF/NOPB?

The ADC101S101CIMF/NOPB is fully specified and guaranteed to operate at up to 1 Msps across the industrial temperature range (−40°C to +85°C). This maximum rate is ensured under conditions of VA = 2.7V to 5.25V, fSCLK = 20 MHz, and CL = 15 pF. Performance metrics including INL, SNR, and THD remain within datasheet limits at this rate, distinguishing it from parts rated only at nominal speeds.

Does ADC101S101CIMF/NOPB require an external reference voltage?

No, ADC101S101CIMF/NOPB uses its VA supply pin as both power source and reference voltage-eliminating need for external reference components. The full-scale input range is 0 V to VA, and LSB size equals VA/1024. To maintain accuracy, VA must be stable and low-noise, typically achieved with 1 µF + 0.1 µF bypass capacitors placed within 1 cm of the pin.

How does the power-down mode work on ADC101S101CIMF/NOPB?

ADC101S101CIMF/NOPB enters shutdown mode when the CS pin is driven high before the 10th falling edge of SCLK after conversion initiation. In this state, supply current drops to 500 nA (typ) at 5V, reducing power consumption to 2.5 µW. The device remains in shutdown until CS falls again, with 1 µs power-up time required before next conversion begins.

Is ADC101S101CIMF/NOPB pin-compatible with other devices in the ADC101Sxx1 family?

Yes, ADC101S101CIMF/NOPB is fully pin- and function-compatible with ADC101S021 and ADC101S051 in the same 6-lead WSON or SOT-23 packages. All share identical pin assignments, interface protocol, and timing behavior-allowing direct substitution when sample rate requirements align with the respective device's specified range (50–200 ksps, 200–500 ksps, or 500 ksps–1 Msps).

What is the recommended PCB layout practice for ADC101S101CIMF/NOPB?

Place 1 µF and 0.1 µF ceramic bypass capacitors within 1 cm of the VA pin, connect the exposed thermal pad directly to a solid GND plane, route VIN away from digital traces, and use a dedicated analog ground pour beneath the device. Avoid splitting ground planes; keep SCLK and CS routing short and shielded from noisy signals to preserve 30 ps aperture jitter and 62 dB SNR performance.