Texas Instruments ADC108S052CIMTX/NOPB

Overview

ADC108S052CIMTX/NOPB from Texas Instruments is a low-power, 10-bit successive-approximation ADC with eight single-ended analog inputs (IN0–IN7), SPI-compatible serial interface, and independent analog/digital supplies (VA = 2.7V–5.25V, VD = 2.7V–VA). It delivers 200–500 ksps throughput, ±0.4 LSB max INL/DNL, and operates across −40°C to +105°C for industrial sensor data acquisition.

For engineers reviewing the ADC108S052CIMTX/NOPB datasheet, ADC108S052CIMTX/NOPB pinout, ADC108S052CIMTX/NOPB application, or ADC108S052CIMTX/NOPB equivalent, this page provides verified pin functions, real-world timing behavior (16-SCLK throughput, 3-cycle track/13-cycle hold-conversion), supply-sensitive power states (1.5 mW @ 3V, 0.09 µW shutdown), and validated alternatives for multi-channel 10-bit sampling in space-constrained systems.

Technical Context

The ADC108S052CIMTX/NOPB implements a charge-redistribution DAC architecture with internal track-and-hold, requiring exactly 16 SCLK cycles per conversion frame: first 3 cycles for input acquisition, next 13 for successive approximation and MSB-first serial output. Its dual-supply design isolates analog noise (AGND) from digital switching (DGND), while VA serves as both analog supply and reference voltage.

Serial communication uses CS-active-low framing with DIN for 8-bit control register loading (ADD2–ADD0 channel selection) and DOUT for 10-bit straight-binary output padded with leading/trailing zeros. Clock tolerance spans 3.2–8 MHz for guaranteed performance, with aperture delay fixed at 4 ns and acquisition time of 3 SCLK cycles.

Key Specifications

Pinout & Package

ADC108S052CIMTX/NOPB is housed in a 16-lead TSSOP (Package Number PW0016A) with 0.65 mm lead pitch, optimized for thermal dissipation (θJA = 96°C/W) and PCB area efficiency in industrial modules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-channel, 10-bit SAR ADC applications.

Compared with ADS7822U and MAX11100ETE+, ADC108S052CIMTX/NOPB uniquely combines independent VA/VD supplies, guaranteed 78.6 dB channel isolation, and TSSOP packaging-making it optimal for noise-sensitive, multi-voltage industrial systems requiring long-term supply stability.

Availability

ADC108S052CIMTX/NOPB is available at Aetrix Electronics and suitable for automotive navigation sensors, portable medical monitors, industrial process controllers, and wireless sensor nodes requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for ADC108S052CIMTX/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 over 50 years of innovation in precision data converters and industrial-grade ICs.

The ADC108S052CIMTX/NOPB belongs to TI's precision SAR ADC product line, engineered for cost-sensitive, multi-channel data acquisition in industrial automation, medical instrumentation, and automotive subsystems where reliability and supply-chain resilience are critical.

FAQ

What is the minimum and maximum clock frequency supported by ADC108S052CIMTX/NOPB?

The ADC108S052CIMTX/NOPB specifies a minimum SCLK frequency of 3.2 MHz and maximum of 8 MHz for guaranteed AC performance (SINAD ≥61.3 dB, INL ≤±0.4 LSB). Operation outside this range may degrade accuracy or cause timing violations; the device tolerates up to 16 MHz SCLK but performance is not ensured beyond 8 MHz.

How does ADC108S052CIMTX/NOPB handle channel selection during continuous conversion mode?

In continuous mode, ADC108S052CIMTX/NOPB loads the next channel address via DIN during the first 8 rising SCLK edges after CS falls. The ADD2–ADD0 bits in the control register determine which of IN0–IN7 is sampled next; default is IN0 after power-up, and channel sequencing is fully software-controllable per frame without hardware reconfiguration.

Can ADC108S052CIMTX/NOPB operate with VA = 3.3V and VD = 1.8V?

No - ADC108S052CIMTX/NOPB requires VD ≥2.7V and VD ≤VA per datasheet Operating Ratings. Setting VD = 1.8V violates the absolute minimum VD specification and will result in undefined logic behavior, failed serial communication, or permanent damage. Valid combinations include VA = VD = 3.3V or VA = 5.0V / VD = 3.3V.

What is the purpose of the four leading and two trailing zeros in ADC108S052CIMTX/NOPB's serial output format?

The ADC108S052CIMTX/NOPB outputs 16-bit frames: 4 leading zeros, then 10-bit straight-binary result (MSB first), then 2 trailing zeros. This fixed-length framing ensures deterministic timing for FIFO-based MCU interfaces and simplifies bit alignment in DSP firmware - the zeros are not data but structural padding required for synchronous readout.

Does ADC108S052CIMTX/NOPB require an external reference voltage?

No - ADC108S052CIMTX/NOPB uses VA as its internal reference voltage; no external reference is needed. The LSB step size equals VA / 1024, so full-scale range is 0V to VA. Adding an external reference would conflict with the internal architecture and is neither supported nor recommended per the datasheet.