FEATURES

Controlled Baseline

– One Assembly

– One Test Site

– One Fabrication Site

Extended Temperature Performance of

–55°C to 125°C

Enhanced Diminishing Manufacturing

Sources (DMS) Support

Enhanced Product-Change Notification

Qualification Pedigree (1)

12-Bit Dual Transmit Digital-to-Analog

Converter (DAC)

200-MSPS Update Rate

Single Supply: 3 V to 3.6 V

High Spurious-Free Dynamic Range (SFDR):

85 dBc at 5 MHz

High Third-Order Two-Tone Intermodulation

(IMD3): 78 dBc at 15.1 and 16.1 MHz

WCDMA Adjacent Channel Leakage Ratio

(ACLR): 70 dB at 30.72 MHz

Independent or Single Resistor Gain Control

Dual or Interleaved Data

On-Chip 1.2-V Reference

Low Power: 330 mW

Power-Down Mode: 15 mW

Package: 48-Pin Thin Quad Flat Pack (TQFP)

APPLICATIONS

Cellular Base Transceiver Station Transmit Channel

– CDMA: W-CDMA, CDMA2000, IS-95

– TDMA: GSM, IS-136, EDGE/UWC-136

Medical/Test Instrumentation

Arbitrary Waveform Generators (ARB)

Direct Digital Synthesis (DDS)

Cable Modem Termination System (CMTS)

DESCRIPTION

The DAC5662 is a monolithic, dual-channel 12-bit, high-speed digital-to-analog converter (DAC) with on-chip

voltage reference.

Operating with update rates of up to 200 MSPS, the DAC5662 offers exceptional dynamic performance, tight

gain, and offset matching characteristics that make it suitable in either I/Q baseband or direct IF communication

applications.

Each DAC has a high-impedance differential-current output, suitable for single-ended or differential

analog-output configurations. External resistors allow scaling the full-scale output current for each DAC

separately or together, typically between 2 mA and 20 mA. An accurate on-chip voltage reference is temperature

compensated and delivers a stable 1.2-V reference voltage. Optionally, an external reference may be used.

The DAC5662 has two 12-bit parallel input ports with separate clocks and data latches. For flexibility, the

DAC5662 also supports multiplexed data for each DAC on one port when operating in the interleaved mode.

The DAC5662 has been specifically designed for a differential transformer coupled output with a 50-W doubly

terminated load. For a 20-mA full-scale output current a 4:1 impedance ratio (resulting in an output power of

4 dBm) and 1:1 impedance ratio transformer (–2-dBm output power) are supported.