Texas Instruments TLC5733IPM

Overview

TLC5733IPM from Texas Instruments is a 3-channel, 8-bit, 20 MSPS CMOS analog-to-digital converter optimized for YUV/RGB video digitization with integrated high-precision clamp circuitry, ±1 LSB clamp accuracy, and programmable 4:4:4 / 4:2:2 / 4:1:1 output data formats - deployed in broadcast-quality NTSC/PAL video encoders and digital TV front-ends.

For engineers reviewing the TLC5733IPM datasheet, TLC5733IPM pinout, TLC5733IPM application, or TLC5733IPM equivalent, key selection criteria include its triple-channel simultaneous sampling architecture, internal composite sync timing recovery, differential linearity error (±0.5 LSB max), analog input bandwidth (>14 MHz), and support for dual-supply operation (5 V analog core / 2.7–5.25 V I/O).

Technical Context

The TLC5733IPM implements three independent semi-flash ADC cores with per-channel feedback-type clamp circuits synchronized to horizontal blanking intervals. Its internal 910/1136-counter logic detects and corrects missing or noisy COMPOSITE SYNC pulses for NTSC or PAL systems, generating precise 1H-aligned clamp pulses without external timing components.

It features a multiplexed output-data format selector (MODE0/MODE1) enabling real-time switching between YUV subsampling ratios (4:1:1, 4:2:2, 4:4:4) and supports RGB digitization in 4:4:4 mode with clamp disabled. The device operates across –20°C to 75°C and uses separate analog/digital ground and supply domains per channel to minimize crosstalk.

Key Specifications

Pinout & Package

64-pin Shrink Quad Flatpack (PM package), 10 mm × 10 mm body, 0.5 mm pitch, exposed thermal pad (not electrically connected). Pinout validated per SLAS104B datasheet Figure 1 (top view) and Terminal Functions tables (pages 4–5).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-channel video ADC applications.

Compared with THS7374IPWPR and ADV7123KSTZ140, the TLC5733IPM uniquely combines 3-channel 8-bit ADC, auto-synchronizing clamp, and programmable YUV subsampling in one 64-pin QFP - making it irreplaceable for legacy SD video digitization where signal integrity, timing autonomy, and minimal external components are critical.

Availability

TLC5733IPM is available at Aetrix Electronics and suitable for NTSC encoder design, PAL tuner development, and professional SD video capture systems requiring stable component supply and long-lifecycle support.

Supply support for TLC5733IPM 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 signal chain and power management ICs.

The TLC5733IPM belongs to TI's legacy video ADC product line, engineered specifically for high-fidelity standard-definition video digitization in broadcast, consumer, and industrial video equipment with emphasis on timing robustness and analog signal integrity.

FAQ

What is the maximum supported clock frequency for the TLC5733IPM?

The TLC5733IPM supports a minimum maximum conversion rate of 20 MSPS, with nominal clock frequencies of 14.31818 MHz for NTSC and 17.745 MHz for PAL systems. Its analog input bandwidth exceeds 14 MHz, and the device is characterized to operate reliably at 20 MHz clock input under recommended conditions. The TLC5733IPM datasheet specifies this performance across the full operating temperature range of –20°C to 75°C.

Does the TLC5733IPM support both NTSC and PAL video standards?

Yes, the TLC5733IPM supports both NTSC and PAL through the dedicated NT/PAL input pin (pin 3), which configures internal counter logic for 910-clock (NTSC) or 1136-clock (PAL) horizontal sync period generation. This enables automatic clamp pulse alignment to either standard's timing structure, and the device maintains ±1 LSB clamp accuracy and <0.7° differential phase error in both modes. The TLC5733IPM is explicitly characterized for use in dual-standard video equipment.

How does the internal clamp circuit of the TLC5733IPM handle missing or noisy composite sync signals?

The TLC5733IPM uses a dual-noise-gate timing monitor on the EXTCLP input to detect valid COMPOSITE SYNC edges. If sync pulses are missing, the internal counter generates precise 1H-aligned clamp pulses after 76 clocks (NTSC) or 93 clocks (PAL) from zero count. It also suppresses false triggers from spikes within defined noise windows (e.g., 43 clocks before expected falling edge). This ensures continuous, jitter-free clamping - a core capability confirmed in the TLC5733IPM functional description and timing diagrams.

What output data formats does the TLC5733IPM support, and how are they selected?

The TLC5733IPM supports three YUV output formats: 4:1:1 (MODE0=L, MODE1=L), 4:4:4 (MODE0=H, MODE1=L), and 4:2:2 (MODE0=L, MODE1=H). The 4:4:4 mode disables clamping and is used for RGB digitization. Selection is performed via static logic levels on pins 46 (MODE0) and 45 (MODE1); the HH state is undefined. Format timing and bit mapping are fully detailed in Tables 5–8 of the TLC5733IPM datasheet.

Is the TLC5733IPM pin-compatible with other members of the TLC57xx family?

No documented pin-compatible variants exist for the TLC5733IPM within the TLC57xx family. The TLC5733AIPM (identical part marking per datasheet "AVAILABLE OPTIONS" table) shares identical pinout, package, and electrical specifications. Other family members such as TLC5731 or TLC5732 differ in channel count, resolution, or feature set and are not pin-compatible. The TLC5733IPM datasheet confirms PM-package pin assignments exclusively for the TLC5733A variant.