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LIMCHIP CO., LIMITED
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RFQ ListingAnalog ICs & Data Converters
AD9755ASTZRL is an Analog Devices 14-bit, 300 MSPS high speed TxDAC+ digital-to-analog converter supplied in a 48-lead LQFP on tape and reel. It pairs a segmented current-source 14-bit DAC core with two buffered latched input ports, so the parallel interface can sustain output update rates up to 300 MSPS where a single data port would be the bottleneck. An internal clock-doubling PLL accepts differential or single-ended clock sources, while the on-chip 1.2 V temperature-compensated reference and 2 mA to 20 mA full-scale differential current outputs simplify the analog back end. With 71 dB SFDR to Nyquist at 25 MHz output, 11 ns settling and 155 mW dissipation from a single 3.3 V supply, it targets multi-carrier base station and direct digital synthesis transmit chains.
ManufacturerAnalog Devices
Package48-Lead LQFP (7 mm × 7 mm)
SeriesAD9755
Analog / Signal Chain Specifications
| Parameter | Value / Specification |
|---|---|
| Resolution | 14-bit |
| Sample / Update Rate | 300 MSPS (max output update rate) |
| Channels | 1 channel (single channel, dual muxed input ports) |
| Interface | Parallel, straight binary input, two buffered latches |
| Package / Case | 48-Lead LQFP (7 mm × 7 mm) |
| Supply Voltage | 3.0 V to 3.6 V (single 3.3 V supply) |
| Output Type | Differential current outputs, 2 mA to 20 mA full-scale |
| Dynamic Performance | SFDR 71 dB to Nyquist at 25 MHz output; excellent IMD |
| Settling Time | 11 ns (typ) |
| Linearity | INL ±2.5 LSB; DNL ±1.5 LSB |
| Power Dissipation | 155 mW at 3.3 V |
| Reference | On-chip 1.2 V temperature-compensated band gap; external reference supported |
| Clock Input | Differential or single-ended; internal clock-doubling PLL |
| Operating Temperature | -40 °C to +85 °C |
Analog Features & Applications
- 14-bit TxDAC+ DAC core with 300 MSPS maximum output update rate
- Dual muxed input ports with two buffered latches for data rates beyond a single-port interface
- SFDR 71 dB to Nyquist at 25 MHz output and strong IMD performance for multi-carrier signals
- Segmented current-source architecture with proprietary switching minimizes glitch energy
- Differential current outputs, 2 mA to 20 mA full-scale, 11 ns typical settling time
- Single 3.3 V supply (3.0 V to 3.6 V) with 155 mW power dissipation
- On-chip 1.2 V temperature-compensated band gap reference; external reference also supported
- Internal clock-doubling PLL with differential or single-ended clock input
- INL ±2.5 LSB and DNL ±1.5 LSB over the -40 °C to +85 °C range
- 48-lead LQFP (7 mm × 7 mm), supplied on tape and reel
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Frequently Asked Questions
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