Texas Instruments TLC5510INSR-A

Overview

TLC5510INSR-A from Texas Instruments is a CMOS 8-bit, 20 MSPS analog-to-digital converter (ADC) using a semiflash architecture for high-speed video and communication signal digitization. It features 2-V full-scale input range, ±0.75 LSB integral nonlinearity at 25°C, 5-V single-supply operation, and parallel CMOS-compatible digital outputs with tri-state enable. It is used in digital TV front-ends requiring low-latency, stable sampling of baseband video signals.

For engineers reviewing the TLC5510INSR-A datasheet, TLC5510INSR-A pinout, TLC5510INSR-A application, or TLC5510INSR-A equivalent, this page delivers verified technical context, real-world timing behavior, package-specific layout guidance, and validated alternative options for video ADC selection in production-grade embedded systems.

Technical Context

The TLC5510INSR-A implements a 2-step semiflash conversion architecture: upper and lower 4-bit comparator blocks operate in staggered clock phases to reduce comparator count and power versus full-flash designs. Conversion latency is fixed at 2.5 clock cycles from analog sample edge to valid D1–D8 output.

It integrates internal reference resistors (320 Ω / 270 Ω / 80 Ω) enabling a self-contained 2-V full-scale range when REFTS is shorted to REFT and REFBS to REFB. Analog input bandwidth is 14 MHz (–1 dB), aperture jitter is 30 ps, and differential gain/phase are 1% and 0.7° under NTSC conditions.

Key Specifications

Pinout & Package

Package: 24-pin SOIC (NS), 7.7 mm × 12.9 mm body, RoHS-compliant NiPdAu lead finish, MSL Level-1 (260°C, unlimited floor life).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed video ADC applications.

Compared with TLC5510INSR-A, AD9280ARSZ offers higher speed but increases BOM and layout complexity due to external reference and dual-supply requirements, while MAX1186EEE+ reduces power and size at the cost of interface compatibility and added FPGA logic for LVDS deserialization.

Availability

TLC5510INSR-A is available at Aetrix Electronics and suitable for digital television tuners, medical ultrasound receivers, video conferencing capture cards, and QAM demodulator baseband interfaces requiring stable component supply across extended production lifecycles.

Supply support for TLC5510INSR-A 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 high-speed interface solutions.

The TLC5510 product line was designed specifically for cost-sensitive, high-volume video digitization applications-including broadcast equipment, medical imaging, and communications infrastructure-where 20-MSPS parallel ADC performance meets NTSC/PAL timing constraints.

FAQ

What is the full-scale input voltage range of the TLC5510INSR-A?

The TLC5510INSR-A has a nominal 2-V full-scale input range, achieved using its internal 3-resistor divider (320 Ω / 270 Ω / 80 Ω) between VDDA and AGND. When REFTS is shorted to REFT and REFBS to REFB per TI's Figure 3, the device generates a self-contained 2-V reference span-no external reference IC or resistors required. This matches standard video signal levels and simplifies front-end design for TLC5510INSR-A-based systems.

Does the TLC5510INSR-A require separate analog and digital ground connections?

Yes-the TLC5510INSR-A has dedicated AGND (pins 20, 21) and DGND (pins 2, 24) terminals, though they are connected internally. TI's datasheet mandates physically separate analog and digital ground planes on the PCB, with AGND and DGND tied at a single low-impedance point near the device. This prevents digital switching noise from modulating the analog input path and is essential to achieve the specified 44 dB SNR and 43 dB SFDR for the TLC5510INSR-A.

What is the latency from clock edge to valid digital output on the TLC5510INSR-A?

The TLC5510INSR-A exhibits a fixed 2.5-clock-cycle latency from the falling edge of CLK (analog sampling instant) to valid D1–D8 output. As confirmed in the functional timing diagram (Figure 2) and electrical characteristics table, this deterministic delay enables precise synchronization in pipelined video processors and FPGA-based capture engines. For a 20-MHz clock, the latency is 125 ns-critical for aligning pixel data with horizontal sync in TLC5510INSR-A-based digital TV systems.

Can the TLC5510INSR-A operate with a 3.3-V digital supply?

No-the TLC5510INSR-A requires VDDD between 4.75 V and 5.25 V per its recommended operating conditions. Its digital outputs (D1–D8, OE, CLK) are CMOS-compatible with 5-V rails only; applying 3.3 V to VDDD violates absolute maximum ratings and risks undefined logic states or latch-up. To interface with 3.3-V FPGAs or processors, level-shifting buffers (e.g., SN74AVC4T245) must be used-TI does not support native 3.3-V operation for the TLC5510INSR-A.

Is the TLC5510INSR-A pin-compatible with the TLC5510A variant?

No-the TLC5510INSR-A (2-V full-scale) and TLC5510AINS (4-V full-scale) share identical pinout and package (SOIC-24), but their reference configurations differ fundamentally: TLC5510INSR-A uses all three internal resistors with REFTS↔REFT and REFBS↔REFB shorts, while TLC5510AINS grounds REFB and applies 4 V to REFT. Swapping them without modifying external jumpers will cause severe gain error. The TLC5510INSR-A is not a drop-in replacement for TLC5510AINS in 4-V applications.