Texas Instruments TLC5510INSR

Overview

TLC5510INSR from Texas Instruments is a CMOS 8-bit, 20 MSPS analog-to-digital converter (ADC) using a semiflash architecture with internal sample-and-hold, parallel digital outputs, and integrated reference resistors. It operates on a single 5-V supply, delivers ±0.75 LSB integral linearity at 25°C, and supports 2-V full-scale analog input range for video and high-speed data acquisition applications.

For engineers reviewing the TLC5510INSR datasheet, TLC5510INSR pinout, TLC5510INSR application, or TLC5510INSR equivalent, key selection criteria include its 20 MSPS conversion rate, 2-V input span, 2.5-clock latency, low-power 127.5 mW typical consumption, and SOP-24 package compatibility with video signal chains and QAM demodulators.

Technical Context

The TLC5510INSR implements a 2-step semiflash conversion architecture-first sampling upper 4 bits via upper comparators, then generating a refined reference voltage to resolve lower 4 bits-reducing comparator count and die size versus flash ADCs. Its internal resistor divider (320 Ω / 270 Ω / 80 Ω) establishes a nominal 2-V reference between REFT and REFB when REFTS and REFBS are shorted to their respective terminals.

Latency is fixed at 2.5 clock cycles from analog sampling edge to valid D1–D8 output. Digital outputs feature high-impedance mode controlled by OE, and analog/digital supplies (VDDA/VDDD) are decoupled separately with 1-µF and 0.01-µF capacitors per TI application guidance.

Key Specifications

Pinout & Package

SOP-24 (NS) package: 7.9 mm × 4.5 mm body, 1.2 mm max height, 0.65 mm lead pitch, tape-and-reel packaging (2000 units/reel), RoHS-compliant NiPdAu 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, TLC5510INSR offers plug-in compatibility with 5-V systems and eliminates reference design complexity; compared with TLC5510IPWR, it provides higher-volume tape-and-reel logistics and SOP-24 mechanical robustness for automated assembly.

Availability

TLC5510INSR is available at Aetrix Electronics and suitable for digital television, medical imaging, video conferencing, and QAM demodulator applications requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.

Supply support for TLC5510INSR 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 90 years of innovation in precision data conversion and signal chain solutions.

The TLC5510 product line was designed for cost-sensitive, high-speed video and communications digitization where integration of reference and sample-and-hold reduces system-level component count and layout complexity.

FAQ

What is the full-scale input voltage range supported by the TLC5510INSR?

The TLC5510INSR supports a 2-V full-scale analog input range. This is achieved using its internal 3-resistor divider network (320 Ω / 270 Ω / 80 Ω) between VDDA and AGND. To configure this, REFT must be shorted to REFTS and REFB to REFBS per Figure 3 of the datasheet. The TLC5510INSR does not support the 4-V range - that is exclusive to the TLC5510A variant.

Does the TLC5510INSR require external reference components?

No, the TLC5510INSR does not require external reference components for its standard 2-V full-scale operation. Its internal resistor divider generates the necessary reference voltage when REFTS is shorted to REFT and REFBS is shorted to REFB. External resistors or voltage references are only needed if custom scaling or temperature compensation is required beyond the datasheet specifications.

What is the output latency of the TLC5510INSR from clock edge to valid data?

The TLC5510INSR exhibits a fixed 2.5-clock-cycle latency from the falling edge of CLK (analog sampling point) to valid D1–D8 output. This deterministic delay is inherent to its semiflash architecture and enables precise timing alignment in synchronous digital systems without variable pipeline stalls or additional synchronization logic.

Can the TLC5510INSR operate with separate analog and digital ground planes?

Yes, the TLC5510INSR supports separate analog (AGND) and digital (DGND) ground connections, though they are internally tied. TI recommends routing AGND and DGND traces separately on the PCB and connecting them at a single star point near the device to minimize noise coupling. This separation preserves the 44 dB SNR and 42 dB SFDR performance specified in the datasheet.

Is the TLC5510INSR pin-compatible with the TLC5510A series?

No, the TLC5510INSR is not pin-compatible with TLC5510A variants such as TLC5510AINS. While both share the same SOP-24 package and pin numbering, their reference terminal configurations differ fundamentally: TLC5510INSR requires REFTS–REFT and REFBS–REFB shorts for 2-V operation, whereas TLC5510A variants connect REFTS to VDDA and REFBS to AGND for 4-V operation. Swapping them without circuit modification will result in incorrect full-scale range and degraded linearity.