Texas Instruments ADC082S101CIMM/NOPB

Overview

ADC082S101CIMM/NOPB from Texas Instruments is a low-power, 2-channel, 8-bit successive-approximation ADC with serial SPI-compatible interface, operating at 500 ksps to 1 Msps sample rates over −40°C to +85°C. It accepts dual analog inputs (IN1/IN2), uses single 2.7V–5.25V supply, and delivers 49.6 dB SNR and ±0.13 LSB INL (typ) for portable data acquisition systems.

For engineers reviewing the ADC082S101CIMM/NOPB datasheet, ADC082S101CIMM/NOPB pinout, ADC082S101CIMM/NOPB application, or ADC082S101CIMM/NOPB equivalent, key selection criteria include dual-channel sampling timing, track-and-hold acquisition in ≤3 SCLK cycles, straight-binary output format, and power-down current of 0.12 µW at 3V - all validated across industrial temperature range.

Technical Context

The ADC082S101CIMM/NOPB implements a charge-redistribution DAC architecture with internal track-and-hold, enabling precise sampling during first 3 SCLK cycles after CS assertion. Conversion completes in 13 additional SCLK cycles, yielding 16-cycle throughput time per frame.

Its serial interface supports SPI/QSPI/MICROWIRE protocols with MSB-first DOUT and rising-edge DIN loading. Input channel selection is controlled via 3-bit ADD[2:0] field in an 8-bit control register, with IN1 as default on power-up and IN2 selectable via ADD[1:0] = 01.

Key Specifications

Pinout & Package

ADC082S101CIMM/NOPB is housed in an 8-lead VSSOP (DGK) package with 0.65 mm lead pitch, optimized for space-constrained PCB layouts and industrial thermal environments (θ_JA = 250°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel SAR ADC applications.

Compared with ADC082S051CIMM/NOPB, the ADC082S101CIMM/NOPB provides 2× higher maximum throughput without layout change; versus ADC102S101CIMM/NOPB, it trades 2 bits of resolution for 30% lower active power and simpler 8-bit data path integration.

Availability

ADC082S101CIMM/NOPB is available at Aetrix Electronics and suitable for portable medical sensors, industrial motor monitoring, and remote environmental data loggers requiring stable component supply across extended production lifecycles.

Supply support for ADC082S101CIMM/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 and embedded processing technologies, with decades of expertise in precision data converters and industrial-grade IC design.

The ADC082S101CIMM/NOPB belongs to TI's low-power SAR ADC product line, engineered for space- and energy-constrained applications demanding dual-channel sampling, robust serial interfacing, and guaranteed performance across industrial temperatures.

FAQ

What is the minimum and maximum sample rate supported by the ADC082S101CIMM/NOPB?

The ADC082S101CIMM/NOPB is fully specified from 500 ksps to 1 Msps. Its conversion time is fixed at 13 SCLK cycles, and throughput time is 16 SCLK cycles, meaning actual sample rate depends on SCLK frequency (50 kHz–16 MHz). At 16 MHz SCLK, the device achieves its rated 1 Msps; at 8 MHz, it operates at 500 ksps. Performance parameters including INL, SNR, and THD are guaranteed across this entire range.

How does the ADC082S101CIMM/NOPB select between IN1 and IN2 inputs?

The ADC082S101CIMM/NOPB selects input channels via the 3-bit ADD[2:0] field in its 8-bit control register, loaded on DIN during each conversion frame. ADD[1:0] = 00 selects IN1 (default on power-up); ADD[1:0] = 01 selects IN2. ADD[1] = 1 is invalid and results in indeterminate DOUT behavior. The control register is updated before the next conversion begins, enabling dynamic channel switching per sample.

Does the ADC082S101CIMM/NOPB require external reference voltage?

No, the ADC082S101CIMM/NOPB uses its VA supply pin as the reference voltage - the full-scale range is 0 V to VA. This eliminates need for external reference components but requires clean, well-bypassed VA (1 µF + 0.1 µF capacitors within 1 cm) to maintain SNR and avoid supply-induced errors. Reference accuracy and noise directly impact absolute measurement accuracy.

What is the power consumption of ADC082S101CIMM/NOPB in shutdown mode?

In shutdown mode (CS high), the ADC082S101CIMM/NOPB draws only 0.12 µW at 3V or 0.35 µW at 5V. This ultra-low quiescent power is achieved by disabling internal clocks, bias circuits, and output drivers. Recovery to active conversion takes no dummy cycles - the first valid result appears after one full 16-cycle frame following CS assertion.

Is ADC082S101CIMM/NOPB pin-compatible with other devices in the ADC082Sxx1 family?

Yes, ADC082S101CIMM/NOPB is fully pin- and function-compatible with ADC082S021CIMM/NOPB and ADC082S051CIMM/NOPB per TI's official documentation. All share identical 8-pin VSSOP (DGK) footprint, pin assignments, control register structure, and serial interface timing. This allows drop-in replacement when upgrading sample rate capability without PCB revision.