NXP Semiconductors TZA3011BVH/C2,557

Overview

TZA3011BVH/C2,557 from NXP Semiconductors (formerly Philips) is a high-speed laser driver IC for optical transmission systems operating up to 3.2 Gbit/s. It delivers dual-loop control of average monitor current (150–1300 µA) and extinction ratio (5–15 linear), supports DC-coupled laser diodes at 3.3 V or 5 V supply, and features 80 ps rise/fall times with <20 ps peak-to-peak jitter - deployed in SDH/SONET line cards and fiber-optic transceivers.

For engineers reviewing the TZA3011BVH/C2,557 datasheet, TZA3011BVH/C2,557 pinout, TZA3011BVH/C2,557 application, or TZA3011BVH/C2,557 equivalent, key selection criteria include its HBCC32 package compatibility, dual-loop stability across temperature and laser aging, PECL/LVPECL/CML input interface support, and DC-coupling capability for 5 V laser bias.

Technical Context

The TZA3011BVH/C2,557 implements a dual-loop feedback architecture: one loop regulates average optical power via monitor photodiode current (pin MON), while the second controls extinction ratio by comparing 'one' and 'zero' current levels. Both loops operate up to 2.7 Gbit/s, with optional average-only mode extending to 3.2 Gbit/s when ER is grounded.

Its RF output stage uses a high-speed bipolar differential pair optimized for DC-coupled lasers, delivering up to 100 mA modulation current with 2 V dynamic range on LA pins and minimum 1.2 V output voltage at 5 V VCCO. Control is enabled via analog programming inputs (AVR, ER, BIASIN, MODIN) and digital functions including retiming (clock-synchronized data latching) and pulse width adjustment (±100 ps).

Key Specifications

Pinout & Package

Package: HBCC32 - plastic thermal-enhanced bottom chip carrier, 32-terminal, 5 × 5 × 0.65 mm body (SOT560-1). Thermal resistance junction-to-ambient is 35 K/W on 4-layer PCB with heatsink vias.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar laser driver applications.

Compared with MAX3736AETE+ and ADN2830ACPZ-RL7, the TZA3011BVH/C2,557 uniquely combines dual-loop optical control, DC-coupling flexibility for 5 V lasers, and sub-20 ps jitter in a thermally efficient HBCC32 package - making it optimal for high-reliability, long-lifetime optical transmission designs.

Availability

TZA3011BVH/C2,557 is available at Aetrix Electronics and suitable for SDH/SONET line cards, fiber channel transceivers, and 5G fronthaul optical links requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TZA3011BVH/C2,557 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

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and communications markets.

The TZA3011BVH/C2,557 belongs to NXP's high-speed optical interconnect product line, designed specifically for robust, temperature-stable laser driving in telecom and datacom infrastructure where reliability and long-term calibration stability are critical.

FAQ

What is the maximum data rate supported by the TZA3011BVH/C2,557?

The TZA3011BVH/C2,557 supports data rates up to 3.2 Gbit/s. This is confirmed in the official datasheet Rev. 06 (2005), where it states "30 Mbit/s up to 3.2 Gbit/s A-rate™ laser drivers" and specifies dual-loop operation up to 2.7 Gbit/s and average-loop-only mode up to 3.2 Gbit/s. The TZA3011BVH/C2,557 achieves this using a BiCMOS RF process and optimized differential output stages.

Does the TZA3011BVH/C2,557 support DC-coupled laser diodes?

Yes, the TZA3011BVH/C2,557 explicitly supports DC-coupled laser diodes. As stated in the General Description, "The TZA3011B is intended for use in an application with a DC-coupled laser diode for both 3.3 V and 5 V laser supply voltages." Its LA output is optimized for DC coupling, with minimum Vo(LA) of 1.2 V at 5 V VCCO, and the ACDC bonding pad must be grounded for DC-coupling operation - confirming full hardware and functional support in the TZA3011BVH/C2,557.

What are the key differences between TZA3011A and TZA3011B variants?

The TZA3011A is designed for AC-coupled lasers with 3.3 V laser supply, while the TZA3011B (including TZA3011BVH/C2,557) supports DC-coupled lasers at 3.3 V or 5 V. Key differences include LA output voltage minima (1.2 V vs. 0.8 V at 3.3 V), BIAS output headroom (0.4 V vs. 0.8 V at 5 V), and ACDC pad configuration. The TZA3011BVH/C2,557 uses the TZA3011B silicon die in HBCC32 packaging - all specifications reflect the B variant's DC-coupling capabilities.

How does the dual-loop control function in the TZA3011BVH/C2,557?

The TZA3011BVH/C2,557 implements dual-loop control by simultaneously regulating optical average power (via AVR pin and MON input) and extinction ratio (via ER pin and MON input). It captures 'one' and 'zero' monitor photodiode currents, compares them against programmed references, and adjusts bias and modulation currents independently. This ensures stable optical output across laser aging and temperature - a feature confirmed in Section 7.5 and validated by the 150–1300 µA average current and 5–15 linear ER ranges specified for the TZA3011BVH/C2,557.

What package type is used for the TZA3011BVH/C2,557?

The TZA3011BVH/C2,557 uses the HBCC32 package: a plastic thermal-enhanced bottom chip carrier with 32 terminals, 5 × 5 × 0.65 mm body, and SOT560-1 footprint. This is explicitly listed in Table 1 (Ordering Information) of the datasheet, where "TZA3011BVH" maps to "HBCC32". The package provides low thermal resistance (35 K/W on 4-layer PCB) and is optimized for RF performance in high-speed optical applications - matching the TZA3011BVH/C2,557's 3.2 Gbit/s operation.