Texas Instruments TLV2548MPWREP

Overview

TLV2548MPWREP from Texas Instruments is a radiation-hardened, 12-bit, 200-kSPS serial analog-to-digital converter (ADC) with integrated reference, 8-channel analog multiplexer, and 8-deep FIFO. It operates from a single 3.0-V to 5.5-V supply, supports SPI/DSP interfaces up to 20 MHz, and delivers ±1.2 LSB differential nonlinearity and 70 dB SNDR at 12 kHz input frequency. It is qualified for defense, aerospace, and medical systems requiring operation from –55°C to 125°C.

For engineers reviewing the TLV2548MPWREP datasheet, TLV2548MPWREP pinout, TLV2548MPWREP application, or TLV2548MPWREP equivalent, key selection considerations include its autopower-down mode (1 μA max), programmable sampling period (12/24 SCLKs or CSTART-controlled), internal 2 V/4 V reference options, and EOC/INT dual-function interrupt pin - all critical for low-power, high-reliability embedded data acquisition.

Technical Context

The TLV2548MPWREP uses a charge-redistribution SAR architecture with on-chip 12-bit DAC and auto-calibrated sample-and-hold. Its analog multiplexer supports eight single-ended inputs or three internal test voltages (REFP, REFM, (REFP+REFM)/2), with break-before-make switching to minimize inter-channel crosstalk.

It implements four conversion modes (one-shot, repeat, sweep, repeat-sweep) controlled via a 12-bit configuration register (CFR), and supports both synchronous (CS/FS-triggered) and asynchronous (CSTART-triggered) sampling. Conversion clock sources include internal OSC or external SCLK divided by 1/2/4 - enabling flexible timing alignment with host processors including TI DSPs.

Key Specifications

Pinout & Package

Packaged in a 20-pin TSSOP (PW package), the TLV2548MPWREP features a surface-mount footprint measuring 6.5 mm × 4.4 mm with 0.65 mm pitch, optimized for high-density PCB layouts in ruggedized enclosures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2548MPWREP, ADS8325IPW trades speed and interface flexibility for resolution, while TLV2544MPWREP retains identical reliability and timing architecture but reduces channel count and pin count - making it optimal for cost- and space-sensitive 4-input deployments.

Availability

TLV2548MPWREP is available at Aetrix Electronics and suitable for defense electronics, spacecraft subsystems, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLV2548MPWREP 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 high-reliability components for industrial, automotive, and aerospace markets.

The TLV2548MPWREP belongs to TI's enhanced-product (EP) line - engineered for extended life, controlled baseline, and military-grade qualification to serve mission-critical systems where failure is not an option.

FAQ

What is the maximum sampling rate supported by the TLV2548MPWREP?

The TLV2548MPWREP achieves a maximum throughput of 200 kSPS under optimal conditions: using internal OSC as conversion clock, short sampling (12 SCLKs), and 20-MHz SCLK. At this rate, total conversion time is 3.86 μs. When using SCLK as conversion clock, achievable rate depends on SCLK frequency and division ratio (SCLK/1, /2, /4) configured in CFR bits D8–D7.

Does the TLV2548MPWREP require an external reference voltage?

No, the TLV2548MPWREP does not require an external reference voltage. It integrates selectable 2 V or 4 V internal references (configured via CFR bits D11/D10). When internal reference is selected, REFM must be tied to analog ground. An external reference may be used instead by setting CFR D11 = 0 and applying a stable voltage between REFP and REFM.

How does the CSTART pin function in the TLV2548MPWREP?

The CSTART pin provides hardware-controlled, asynchronous sampling initiation. A falling edge starts the sampling period; the rising edge ends sampling and triggers conversion. This mode operates independently of SCLK timing and is especially valuable for high-impedance sensors. CSTART is fully supported in repeat, sweep, and repeat-sweep modes when internal reference is selected.

Can the TLV2548MPWREP interface directly with TI DSP processors?

Yes, the TLV2548MPWREP supports direct interface with TI DSPs via its FS (frame sync) pin. When FS is used, the falling edge initiates serial communication, allowing CS to remain asserted during multi-word transfers. The device accepts DSP-style frame-aligned data and supports the same command set, making it compatible with C2000, C5000, and C6000 series DSPs.

What are the power-down modes available in the TLV2548MPWREP?

The TLV2548MPWREP offers three power-down modes: software power-down (via command 0x8), hardware power-down (via PWDN pin low), and autopower-down (automatic entry after conversion completes). All modes reduce supply current to ≤1 μA. Recovery is achieved by toggling CS, asserting FS, or raising CSTART - with full functionality restored within 10 μs.