Features
- 1.8 V and 3.3 V power supplies
- 32-bit programmable NCO frequency
- 650 Msps maximum update rate
- ACPR: 71 dBc
- two carriers WCDMA
- fs = 640 Msps
- fo = 133 MHz
- Differential CML receiver with embedded termination
- Differential scalable output current from 1.6 mA to 22 mA
- Dual 12-bit resolution
- Embedded complex modulator
- External analog offset control (10-bit auxiliary DACs)
- Four JESD204A serial input lanes
- Fully compatible SPI port
- IMD3: 80 dBc
- fs = 640 Msps
- fo = 140 MHz
- Industrial temperature range from -40°C to +85°C
- Input data rate up to 312.5 Msps
- Integrated PLL can be bypassed
- Internal digital offset control
- Inverse (sin x) / x function
- LMF = 421 or LMF = 211 support
- LVDS compatible clock inputs
- On-chip 1.29 V reference
- Power-down mode and Sleep modes
- Selectable 2x, 4x or 8x interpolation filters
- Synchronization of multiple DAC outputs
- 2's complement or binary offset data format
- Typical 1.22 W power dissipation at 4x interpolation, PLL off and 640 Msps
- Very low noise cap free integrated PLL
Description
The DAC1208D650 is a high-speed 12-bit dual channel Digital-to-Analog Converter (DAC) with selectable 2x, 4x or 8x interpolating filters optimized for multi-carrier WCDMA transmitters. Because of its digital on-chip modulation, the DAC1208D650 allows the complex pattern provided through lane 0, lane 1, lane 2 and lane 3, to be converted up 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 DAC1208D650 also includes a 2x, 4x or 8x clock multiplier which provides the appropriate internal clocks and an internal regulation to adjust the output full-scale current.
| Part Number | Status | Samples | Stock | Package | Lead Count (#) | Temp. Grade | Pb (Lead) Free | Carrier Type |
|---|---|---|---|---|---|---|---|---|
| DAC1208D650HN-C1 | Obsolete | N/A | Out of Stock | VFQFPN | 64# | I | Yes | Tray |
| DAC1208D650HN-C18 | Obsolete | N/A | Out of Stock | VFQFPN | 64# | I | Yes | Reel |
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