Texas Instruments ADC128S052CIMTX

Overview

ADC128S052CIMTX from Texas Instruments is a 12-bit, 8-channel successive-approximation ADC with 200–500 kSPS throughput, independent analog (VA) and digital (VD) supplies (2.7 V to 5.25 V), SPI-compatible serial interface, and integrated track-and-hold. It operates across −40°C to +105°C and delivers ±1 LSB INL, 73 dB SINAD, and 11.8-bit ENOB at 40.2 kHz for precision sensor data acquisition in automotive navigation and industrial control systems.

For engineers reviewing the ADC128S052CIMTX datasheet, ADC128S052CIMTX pinout, ADC128S052CIMTX application, or ADC128S052CIMTX equivalent, key selection criteria include its 16-pin TSSOP package, dual-supply flexibility (VD ≤ VA), 3.2–8 MHz SCLK compatibility, low-power shutdown mode (0.06 µW @ 3 V), and channel-to-channel isolation of 81 dB - all critical for mixed-signal embedded designs requiring deterministic timing and noise resilience.

Technical Context

The ADC128S052CIMTX implements a charge-redistribution SAR architecture with internal track-and-hold, enabling full 12-bit resolution without external sample-hold circuitry. Its conversion sequence is tightly synchronized to the SCLK: 3 cycles in track mode followed by 13 cycles in hold/convert mode, completing each 12-bit result in exactly 16 SCLK cycles.

It supports both continuous and burst conversion modes via chip-select (CS) control, with automatic power-down between conversions in continuous mode. The straight-binary output is MSB-first, SPI/QSPI/MICROWIRE/DSP-compatible, and the control register allows dynamic channel selection (IN0–IN7) via ADD2–ADD0 bits on DIN during the first 8 SCLK rising edges after CS fall.

Key Specifications

Pinout & Package

ADC128S052CIMTX is housed in a 16-pin TSSOP (PW) package measuring 4.40 mm × 5.00 mm, optimized for compact PCB layouts and automated assembly. Thermal resistance is R_θJA = 110°C/W, supporting operation up to +105°C ambient without forced airflow.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 12-bit SAR ADC applications.

Compared with ADS7822U and MAX11131ETE+, ADC128S052CIMTX offers optimal balance of automotive qualification, dual-supply noise immunity, and compact 16-pin TSSOP packaging - making it preferred for space-constrained industrial and automotive applications where layout simplicity and supply-domain isolation are design priorities.

Availability

ADC128S052CIMTX is available at Aetrix Electronics and suitable for automotive navigation systems, portable medical instruments, and industrial motor control applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADC128S052CIMTX 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 automotive-grade ICs.

The ADC128S052CIMTX belongs to TI's precision SAR ADC product line, engineered for high-accuracy, low-power, multi-channel data acquisition in safety-critical and thermally demanding environments such as automotive and industrial systems.

FAQ

What is the maximum clock frequency supported by ADC128S052CIMTX?

The ADC128S052CIMTX supports a maximum SCLK frequency of 8 MHz, as specified in the absolute maximum ratings and timing characteristics. Operation above this frequency risks incomplete conversions or corrupted data output. At 8 MHz, the device achieves its rated 500 kSPS throughput with 16 SCLK cycles per conversion, and all AC electrical parameters (e.g., tDACC, tDHLD) are guaranteed within specification.

Does ADC128S052CIMTX require an external reference voltage?

No, ADC128S052CIMTX does not require an external reference voltage. The VA supply pin serves as both the analog power rail and the internal reference source, with LSB size defined as VA/4096. This eliminates need for external voltage references and simplifies BOM, though VA must be stable and well-bypassed (1 µF + 0.1 µF) to maintain ±1 LSB INL performance.

How does ADC128S052CIMTX handle channel selection during continuous conversion mode?

In continuous conversion mode, ADC128S052CIMTX loads the next channel address (ADD2–ADD0) via the DIN pin during the first 8 SCLK rising edges after each CS fall. The selected channel (IN0–IN7) is converted in the subsequent 16-cycle frame. This allows dynamic, software-controlled sequencing without interrupting the conversion stream or requiring reassertion of CS between samples.

What is the power consumption of ADC128S052CIMTX in shutdown mode at 5 V?

ADC128S052CIMTX consumes 0.25 µW in shutdown mode when operated at 5 V, as confirmed in the Power Consumption section of the datasheet. This ultra-low quiescent power is achieved by fully disabling the SAR core, reference buffer, and digital interface when CS is high, making it ideal for energy-harvesting or battery-backed systems requiring years of standby operation.

Is ADC128S052CIMTX pin-compatible with ADC128S052CIMT?

Yes, ADC128S052CIMTX and ADC128S052CIMT share identical 16-pin TSSOP (PW) packaging, pinout, and electrical specifications. The "X" suffix denotes tape-and-reel packaging for automated assembly, while "T" indicates cut-tape; both part numbers are functionally and mechanically interchangeable on the same PCB footprint without layout modification.