Texas Instruments ADC084S101CIMM/NOPB

Overview

ADC084S101CIMM/NOPB from Texas Instruments is a low-power, 4-channel, 8-bit successive-approximation ADC with serial SPI-compatible interface, operating at 500 ksps to 1 Msps sample rates, ±0.13 LSB typical INL, 49.6 dB typical SNR, and single-supply operation from 2.7V to 5.25V - used for multi-sensor data acquisition in portable instrumentation.

For engineers reviewing the ADC084S101CIMM/NOPB datasheet, ADC084S101CIMM/NOPB pinout, ADC084S101CIMM/NOPB application, or ADC084S101CIMM/NOPB equivalent, key selection considerations include guaranteed 8-bit no-missing-code performance across industrial temperature (−40°C to +85°C), 10-lead VSSOP package, power-down mode consuming only 0.12 µW at 3V, and channel-selectable analog input routing via DIN-controlled control register.

Technical Context

The ADC084S101CIMM/NOPB implements a charge-redistribution SAR architecture with integrated track-and-hold, supporting four independent analog inputs (IN1–IN4) multiplexed into a single conversion core. Its internal control logic sequences acquisition (3 SCLK cycles), conversion (13 SCLK cycles), and serial readout (MSB-first on DOUT) within a fixed 16-cycle frame synchronized to CS falling edge.

It uses straight binary output coding and accepts serial command input on DIN to configure the next channel address (ADD2:ADD0 bits), enabling continuous multi-channel sampling without external MUX control logic. The device operates fully over 50 kHz–16 MHz SCLK range and maintains specified AC performance (e.g., SINAD ≥49.1 dB, SFDR ≥63 dB) across its entire 500 ksps–1 Msps sample rate range.

Key Specifications

Pinout & Package

ADC084S101CIMM/NOPB is housed in a 10-lead VSSOP (DGS) package, 3.0 mm × 3.0 mm × 0.9 mm body, 0.5 mm lead pitch, exposed thermal pad (not electrically connected). Pin 1 is marked by beveled corner.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 4-channel SAR ADC applications.

Compared with ADC084S101CIMM/NOPB, ADC084S051CIMM/NOPB trades throughput and AC performance for lower cost, while ADC104S101CIMM/NOPB delivers two additional bits at the expense of power and linearity - both retain identical interface timing and control register structure.

Availability

ADC084S101CIMM/NOPB is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC analog input modules, and remote environmental monitoring nodes requiring stable component supply with guaranteed long-term manufacturability.

Supply support for ADC084S101CIMM/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.

ADC084S101CIMM/NOPB belongs to TI's precision SAR ADC product line, engineered for low-power, multi-channel data acquisition in space-constrained, battery-operated, and industrial control applications.

FAQ

What is the maximum sample rate supported by the ADC084S101CIMM/NOPB?

The ADC084S101CIMM/NOPB supports a maximum sample rate of 1 Msps, fully characterized and guaranteed across the industrial temperature range (−40°C to +85°C). This rate corresponds to a minimum throughput time of 16 SCLK cycles, requiring SCLK ≥16 MHz at full speed. At lower SCLK frequencies, the achievable sample rate scales linearly - e.g., 8 MHz SCLK yields 500 ksps.

Does the ADC084S101CIMM/NOPB require an external reference voltage?

No, the ADC084S101CIMM/NOPB does not require an external reference. It uses its analog supply voltage (VA) as the reference, making it ratiometric. The full-scale range is 0 V to VA, and output codes scale proportionally - so accuracy depends on VA stability. For highest precision, use a clean, well-bypassed VA rail or a dedicated low-noise reference as the VA source.

How is channel selection implemented on the ADC084S101CIMM/NOPB?

Channel selection is controlled via the 3-bit ADD2:ADD0 field in the 8-bit control register loaded on DIN during each conversion frame. Valid combinations are: 000 → IN1 (default), 001 → IN2, 010 → IN3, 011 → IN4. Bits 7–6 and 2–0 are DONTC (don't care). The selected channel is sampled in the *next* conversion cycle, enabling pipelined multi-channel sequencing.

What is the power consumption of the ADC084S101CIMM/NOPB in shutdown mode?

In shutdown mode - activated by holding CS high - the ADC084S101CIMM/NOPB consumes only 0.12 µW at +3V supply or 0.35 µW at +5V supply. This ultra-low quiescent state disables the internal clock, track-and-hold, and SAR core while maintaining register state. Recovery to active conversion takes no dummy cycles; the first valid result appears after one complete 16-cycle frame.

Is the ADC084S101CIMM/NOPB compatible with standard SPI interfaces?

Yes, the ADC084S101CIMM/NOPB is fully compatible with standard SPI interfaces: it uses CS (active-low chip select), SCLK (serial clock), DIN (MOSI), and DOUT (MISO) with MSB-first, straight-binary output. It supports SPI modes 0 (CPOL = 0, CPHA = 0) and 3 (CPOL = 1, CPHA = 1), and is also compatible with QSPI and MICROWIRE protocols due to its simple frame-based timing.