Texas Instruments ADS5204IPFBRQ1

Overview

ADS5204IPFBRQ1 from Texas Instruments is a dual-channel, 10-bit, 40 MSPS automotive-qualified analog-to-digital converter with simultaneous sample-and-hold inputs, 3.3-V single-supply operation, and programmable gain amplifiers (0–18 dB) per channel. It delivers 60-dB SNR and 73-dB SFDR at 10.5 MHz input frequency, supporting differential or single-ended analog inputs in digital communications baseband sampling systems.

For engineers reviewing the ADS5204IPFBRQ1 datasheet, ADS5204IPFBRQ1 pinout, ADS5204IPFBRQ1 application, or ADS5204IPFBRQ1 equivalent, key selection considerations include its TQFP-48 package, dual parallel or serial bus output modes, internal/external reference flexibility, −40°C to +85°C automotive temperature range, and PGA-controlled input scaling for signal amplitude matching.

Technical Context

The ADS5204IPFBRQ1 implements a dual-pipeline CMOS architecture with five-stage pipelined conversion, delivering 10-bit resolution at up to 40 MSPS per channel. Each channel features independent programmable gain amplifiers (5-bit control, 0.58-dB step size) and fully differential switched-capacitor sample-and-hold circuits referenced to user-configurable or internal REFT/REFB voltages.

Digital interface options include separate serial control (SCLK/SDI/CS) and configurable parallel outputs-single-bus (DA[9:0]) or dual-bus (DA[9:0]/DB[9:0])-with COUT/COUT latch timing. Power management includes STBY and PWDN_REF pins enabling standby mode (125 µW) and independent internal reference shutdown.

Key Specifications

Pinout & Package

TQFP-48 package with 0.5-mm pitch, thermally enhanced for automotive ambient operation up to +85°C. Pin functions validated per TI SGLS271A datasheet Rev. June 2008.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel, 10-bit, 40 MSPS ADC applications.

Compared with ADS5204IPFBRQ1, ADS5231IPFBR trades PGA programmability for higher resolution and slightly higher power, while AD9222ASTZ offers greater speed and resolution but demands bipolar supplies and lacks automotive qualification - making ADS5204IPFBRQ1 uniquely suited for cost-sensitive, power-constrained, and thermally demanding dual-channel automotive sensing.

Availability

ADS5204IPFBRQ1 is available at Aetrix Electronics and suitable for automotive radar signal acquisition, portable instrumentation data capture, and digital communications baseband sampling requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADS5204IPFBRQ1 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 automotive ICs, with decades of expertise in high-performance data converters and automotive-grade reliability.

The ADS5204IPFBRQ1 belongs to TI's automotive-qualified high-speed ADC product line, designed specifically for robust, low-power digitization in safety-critical vehicle subsystems including radar, camera, and sensor fusion ECUs.

FAQ

What is the operating temperature range for the ADS5204IPFBRQ1?

The ADS5204IPFBRQ1 is qualified for automotive use with a specified operating free-air temperature range of −40°C to +85°C. This Grade 2 AEC-Q100 rating ensures reliable performance in under-hood and ADAS applications where thermal stress is significant. All electrical specifications in the datasheet are guaranteed across this full range, including DC accuracy, SNR, and timing parameters.

Does the ADS5204IPFBRQ1 support both differential and single-ended analog inputs?

Yes, the ADS5204IPFBRQ1 supports both configurations. Differential inputs (A+/A−, B+/B−) deliver optimal performance with 73-dB SFDR and 300-MHz bandwidth. Single-ended operation is also supported by biasing one input to CML (AVDD/2) while driving the other - enabling simplified front-end design for legacy sensors or cost-sensitive systems without sacrificing 10-bit resolution.

How does the programmable gain amplifier (PGA) function in the ADS5204IPFBRQ1?

The ADS5204IPFBRQ1 integrates two independent 5-bit PGAs - one per channel - offering 0 dB to 18 dB gain in 0.58-dB steps. Gain is set via serial register writes (PGA0–PGA4 bits per channel), and changes are resynchronized to the internal 40-MHz conversion clock to prevent analog glitches during sampling. This allows real-time amplitude adaptation without external amplification stages.

What reference options does the ADS5204IPFBRQ1 provide?

The ADS5204IPFBRQ1 supports both internal and external references. Internal references fix REFT = 2 V and REFB = 1 V (1-V differential), optimized for 2-V_PP differential input. External references can be applied to REFT/REFB pins after disabling the internal generator via PWDN_REF = HIGH. Shared reference topology ensures tight gain/offset matching (<1% FS mismatch) between channels A and B.

Can the ADS5204IPFBRQ1 operate with a 40-MHz input clock, and what are the timing implications?

Yes, the ADS5204IPFBRQ1 supports both 40-MHz and 80-MHz input clocks. With a 40-MHz CLK, it operates at 40 MSPS per channel using every rising edge. Pipeline latency is fixed at 4 clock cycles in MODE=1/SELB=0 (dual-bus) configuration. COUT runs at 40 MHz, simplifying timing closure in FPGA-based receivers and reducing clock distribution complexity versus 80-MHz alternatives.