Texas Instruments TLC5510INS

Overview

TLC5510INS from Texas Instruments is an 8-bit, 20 MSPS CMOS analog-to-digital converter (ADC) with semiflash architecture, 2-V full-scale input range, ±0.75 LSB integral linearity error at 25°C, and 5-V single-supply operation - used in digital TV front-ends for real-time video digitization.

For engineers reviewing the TLC5510INS datasheet, TLC5510INS pinout, TLC5510INS application, or TLC5510INS equivalent, key selection considerations include its internal 2-V reference resistor divider, 2.5-clock latency, high-impedance parallel outputs, and SOP-24 package compatibility with video signal chain timing constraints.

Technical Context

The TLC5510INS implements a 2-step semiflash conversion architecture using dual 4-bit comparator blocks to reduce die size and power versus full-flash ADCs. It integrates an internal sample-and-hold circuit and uses three on-chip resistors (320 Ω / 270 Ω / 80 Ω) to generate a nominal 2-V reference between REFT and REFB when REFTS and REFBS are shorted.

Conversion latency is fixed at 2.5 clock cycles; output enable (OE) controls high-impedance state on D1–D8; analog and digital grounds (AGND/DGND) are internally connected but require separate low-noise PCB routing per design guidelines.

Key Specifications

Pinout & Package

SOP-24 (NS) package: 7.7 mm × 4.3 mm body, 1.2 mm max height, 0.65 mm lead pitch, NIPDAU lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit, 20 MSPS ADC applications.

Compared with AD9280ARSZ and MAX1186EEE+, the TLC5510INS uniquely combines 5-V operation, factory-trimmed 2-V internal reference, SOP-24 packaging, and video-optimized dynamic specs - making it the only drop-in solution for legacy NTSC/PAL digitization without reference circuit redesign.

Availability

TLC5510INS is available at Aetrix Electronics and suitable for digital television tuners, medical ultrasound systems, video conferencing hardware, and QAM demodulator baseband processors requiring stable component supply across extended production lifecycles.

Supply support for TLC5510INS 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 data conversion and signal chain solutions.

The TLC5510INS belongs to TI's high-speed ADC product line designed specifically for broadcast video, medical imaging, and communications infrastructure - emphasizing low-jitter sampling, integrated reference, and robust industrial temperature operation.

FAQ

What is the full-scale input voltage range of the TLC5510INS?

The TLC5510INS has a 2-V full-scale analog input range achieved using its internal resistor divider network (320 Ω / 270 Ω / 80 Ω) between VDDA and AGND. When REFTS is shorted to REFT and REFBS is shorted to REFB, the device generates a nominal 2-V reference span - eliminating need for external reference components. This configuration is explicitly validated for the TLC5510INS in TI's SLAS095L datasheet.

Does the TLC5510INS require external reference components?

No, the TLC5510INS does not require external reference components when configured for its standard 2-V full-scale operation. Its internal 270 Ω center resistor and flanking 320 Ω / 80 Ω resistors form a precision divider; shorting REFTS to REFT and REFBS to REFB activates this mode. External references are only needed if modifying the span beyond 2 V - a configuration not supported by the TLC5510INS per its datasheet specifications.

What is the conversion latency of the TLC5510INS and how is it timed?

The TLC5510INS has a fixed conversion latency of 2.5 clock cycles from analog sampling edge to valid digital output. Sampling occurs on the falling edge of CLK; the first valid D1–D8 output appears aligned to the rising edge of CLK+2.5. This deterministic latency is confirmed in Figure 2 of the SLAS095L datasheet and enables predictable timing closure in FPGA-based video pipelines without additional synchronization logic.

Can the TLC5510INS operate with separate analog and digital ground planes?

Yes, the TLC5510INS supports separate analog (AGND) and digital (DGND) ground planes despite internal connection between them. TI's application notes mandate physically isolated AGND and DGND traces routed to a single-point star ground, with AGND surrounding ANALOG IN and shielded by ground traces on both sides. This layout is required to achieve specified 30 ps aperture jitter and 46 dB SNR - performance metrics validated only under this grounding scheme.

Is the TLC5510INS pin-compatible with the TLC5510A variant?

No, the TLC5510INS is not pin-compatible with the TLC5510A. While both share the SOP-24 (NS) package and identical pin count, the TLC5510A requires 4-V full-scale operation with REFB grounded and REFT biased to 4 V - altering reference terminal usage and invalidating the internal 2-V divider configuration. The TLC5510INS datasheet explicitly states its internal reference is exclusive to the TLC5510 family, and mixing configurations risks out-of-spec operation or damage.