Dual 14-bit DAC
DAC1408D650
Dual 14-bit DAC; up to 650 Msps; 2, 4 or 8 interpolating with JESD204A interface
Rev. 06 — 2 July 2012
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Description
DAC1408D650
Dual 14-bit DAC; up to 650 Msps; 2, 4 or 8 interpolating with JESD204A interface
Rev. 06 — 2 July 2012
Product data sheet
1. General description
The DAC1408D650 is a high-speed 14-bit dual channel Digital-to-Analog Converter (DAC) with selectable 2, 4 or 8 interpolating filters optimized for multi-carrier WCDMA transmitters.
Because of its digital on-chip modulation, the DAC1408D650 allows the complex pattern provided through lane 0, lane 1, lane 2 and lane 3, to be converted from baseband to IF. The mixing frequency is adjusted via a Serial Peripheral Interface (SPI) with a 32-bit Numerically Controlled Oscillator (NCO) and the phase is controlled by a 16-bit register.
The DAC1408D650 also includes a 2, 4 or 8 clock multiplier which provides the appropriate internal clocks and an internal regulation to adjust the output full-scale current.
The input data format is serial according to JESD204A specification. This new interface has numerous advantages over the traditional parallel one: easy PCB layout, lower radiated noise, lower pin count, self-synchronous link, skew compensation. The maximum number of lanes of the DAC1408D650 is 4 and its maximum serial data rate is 3.125 Gbps.
The Multiple Device Synchronization (MDS) guarantees a maximum skew of one output clock period between several DAC devices. MDS incorporates modes: Master/slave and All slave mode.
2. Features and benefits
Dual 14-bit resolution
650 Msps maximum update rate
Selectable 2...
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