Texas Instruments ADC082S051CIMM/NOPB

Overview

ADC082S051CIMM/NOPB from Texas Instruments is a low-power, 8-bit, dual-channel successive-approximation ADC with SPI-compatible serial interface, 200–500 ksps sample rate, ±0.09 LSB typical DNL, and 49.5 dB typical SNR. It operates from a single 2.7V–5.25V supply and supports track-and-hold acquisition on IN1 or IN2 for portable instrumentation and remote sensing.

For engineers reviewing the ADC082S051CIMM/NOPB datasheet, ADC082S051CIMM/NOPB pinout, ADC082S051CIMM/NOPB application, or ADC082S051CIMM/NOPB equivalent, key selection criteria include guaranteed no missing codes over industrial temperature (−40°C to +85°C), 0.12 µW shutdown power at 3V, VSSOP-8 package compatibility, and straight-binary output timing aligned to SCLK falling edges.

Technical Context

The ADC082S051CIMM/NOPB implements a charge-redistribution DAC architecture with internal track-and-hold, enabling precise sampling of either IN1 or IN2 under software control via its 3-bit channel-select register (ADD2:ADD0). Conversion is initiated by CS falling edge and completes in 13 SCLK cycles after 3-cycle acquisition window.

Its serial interface supports SPI, QSPI, and MICROWIRE protocols with MSB-first, straight-binary output on DOUT and synchronous control register loading on DIN. Power management is handled entirely through CS: high state forces shutdown (≤0.12 µW), while low state enables full operation with configurable throughput up to 500 ksps.

Key Specifications

Pinout & Package

ADC082S051CIMM/NOPB is housed in an 8-lead VSSOP (DGK0008A) package - ultra-thin, surface-mount, 3.0 mm × 3.0 mm footprint with 0.65 mm lead pitch, optimized for space-constrained PCB layouts in portable electronics.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel, 8-bit SAR ADC applications.

Compared with ADC082S021CIMM/NOPB and ADC082S101CIMM/NOPB, the ADC082S051CIMM/NOPB delivers optimal balance of speed (200–500 ksps), power (2.2 mW @ 3V), and industrial-grade linearity - making it the default choice for mid-bandwidth sensor interfaces where neither extreme low power nor maximum speed dominates the BOM trade-off.

Availability

ADC082S051CIMM/NOPB is available at Aetrix Electronics and suitable for portable systems, remote data acquisition, instrumentation and control systems requiring stable component supply, long-term manufacturability, and consistent parametric performance across production lots.

Supply support for ADC082S051CIMM/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 ADC082S051CIMM/NOPB belongs to TI's precision SAR ADC product line, designed specifically for cost-sensitive, low-power, dual-channel data acquisition in industrial, medical, and portable instrumentation.

FAQ

What is the absolute maximum analog input voltage for ADC082S051CIMM/NOPB?

The absolute maximum analog input voltage for ADC082S051CIMM/NOPB is VA + 0.3 V, with VA ranging from +2.7 V to +5.25 V. However, the functional input range is strictly 0 V to VA - exceeding VA risks damage or undefined behavior. The device includes internal ESD diodes but does not tolerate reverse-biased or overvoltage conditions beyond Absolute Maximum Ratings.

Does ADC082S051CIMM/NOPB require external reference voltage?

No, ADC082S051CIMM/NOPB uses its VA supply pin as the reference voltage - the full-scale range is exactly 0 V to VA. No external reference is needed, simplifying design and reducing component count. This also means supply noise directly impacts SNR, so proper bypassing (1 µF + 0.1 µF) is mandatory per the datasheet.

How is channel selection implemented in ADC082S051CIMM/NOPB?

Channel selection in ADC082S051CIMM/NOPB is controlled via bits ADD2–ADD0 in the 8-bit control register loaded on DIN. Only ADD1 and ADD0 are functional: '00' selects IN1 (default), '01' selects IN2. ADD2 and other bits are don't-care. Selection takes effect on the *next* conversion cycle after register load - enabling deterministic interleaved sampling.

What is the minimum SCLK duty cycle supported by ADC082S051CIMM/NOPB?

ADC082S051CIMM/NOPB specifies a minimum SCLK duty cycle of 30% and maximum of 70% at 8 MHz. At lower frequencies (e.g., 3.2 MHz), the recommended range remains 30–70%, though functionality is maintained outside this range. Deviations may affect timing margins for tSU and tH, especially near temperature extremes.

Can ADC082S051CIMM/NOPB operate without a microcontroller?

Yes - ADC082S051CIMM/NOPB requires only a clock source (SCLK) and chip select (CS) to perform conversions. A simple FPGA, CPLD, or even discrete logic can generate the required timing. However, DIN must be driven to select channels, and DOUT must be sampled synchronously - so some form of digital controller is needed for full functionality beyond fixed-channel single-shot use.