DAC38RF89 Texas instruments

DAC38RF89

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DAC38RF89

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Описание

The DAC38RF82 and DAC38RF89 are high performance, wide bandwidth RF-sampling digital-to-analog (DACs) that are capable of dual channel input data rate up to 3.33 GSPS or single-channel operation with 8-bits up to 9-GSPS. The devices have a low power JESD204B Interface with up to 8 lanes, with a maximum bit rate of 12.5 Gbps (DAC38RF89) and 12.8 Gbps (DAC38RF82). In dual channel operation, the input interface is capable of data rates up to 3.33 GSPS at 12-bits and 2.5 GSPS at 16-bits resolution without interpolation. When used as a complex baseband transmitter with interpolation modes from 2x to 24x, the DAC38RF82 or DAC38RF89 is capable of synthesizing wideband signals up to 2 GHz bandwidth with 16-bit input resolution and 2.66 GHz bandwidth with 12-bit input resolution. The 8-bit mode allows an input at the full 9 GSPS maximum DAC sample rate and can synthesize wideband signals from 0 to 4.5 GHz. An optional low jitter PLL/VCO simplifies the DAC clock generation by allowing use of a lower frequency reference clock. DAC38RF82 and DAC38RF89 support different VCO frequency ranges, summarized in Device Comparison Table.

14-Bit resolution, 9-GSPS DAC with multimode operation
- 16-Bit, Dual-channel data mode
  - Max input rate: 2.5-GSPS
  - Wideband digital up-converter
    - Interpolation: 1,2,4,6,8,10,12,16,18,20,24x
- 12-Bit, Dual-channel data mode
  - Max input rate: 3.33-GSPS
  - Wideband digital Up-converter
    - Interpolation: 1,2,24x
- 8-Bit, Single-channel data mode
  - Max input rate: 9-GSPS
JESD204B interface
- Subclass 1 for multichip synchronization
- DAC38RF89: Maximum lane rate: 12.5 Gbps
- DAC38RF82: Maximum lane rate: 12.8 Gbps
Differential output
- Supports DC coupling
- RF Full-scale output power (with 2:1 balun):
  3 dBm at 2.14 GHz
Internal PLL and VCO with bypass
- DAC38RF82: f_C(VCO) = 5.9 or 8.9 GHz
- DAC38RF89: f_C(VCO) = 5 or 7.5 GHz
Power supplies: -1.8 V, 1.0 V, 1.8 V
Package: 10 x 10 mm BGA, 0.8 mm pitch,
144-balls

Resolution (Bits)	14
Number of DAC channels	2
Interface type	JESD204B
Sample/update rate (Msps)	8400
Features	Ultra High Speed
Rating	Catalog
Interpolation	10x, 12x, 16x, 18x, 1x, 20x, 24x, 2x, 4x, 6x, 8x
Power consumption (typ) (mW)	3800
SFDR (dB)	97
Architecture	Current Source
Operating temperature range (°C)	-40 to 85
Reference type	Ext, Int