DAC38RF87 Texas instruments

DAC38RF87

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DAC38RF87

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Описание

The DAC38RF86/96 is a family of high-performance, dual-channel, 14-bit, 9-GSPS, RF-sampling digital-to-analog converters (DACs) that are capable of synthesizing wideband signals from 0 to 4.5 GHz. The DAC38RF87/97 is also a family of high-performance, dual-channel, 14-bit, 6-GSPS, RF-sampling digital-to-analog converters (DACs) that are capable of synthesizing wideband signals from 0 to 3 GHz. A high dynamic range allows the DAC38RFxx family to generate signals for a wide range of applications including 3G/4G signals for wireless base-stations and radar.The devices feature a low-power JESD204B Interface with up to 8 lanes with a maximum bit rate of 12.5 Gbps allowing an input data rate of 1.25 GSPS complex per channel. The DAC38RFxx provides two digital up-converters per channel, with multiple options for interpolation rates. A digital quadrature modulator with independent, frequency flexible NCOs are available to support multi-band operation. A GSM compliant low phase noise PLL/VCO is integrated to simplify the DAC sampling clock generation by allowing the use of a lower frequency reference clock

14-Bit Resolution
Maximum DAC Sample Rate:
- 9.0 GSPS (DAC38RF86, DAC38RF96)
- 6.2 GSPS (DAC38RF87, DAC38RF97)
Key Specifications:
- RF Full-Scale Output Power at 2.1 GHz:0 dBm
- Spectral Performance, DAC38RF87/97
  - f_DAC = 5898.24 MSPS, f_OUT = 2.14 GHz
    - WCDMA ACLR: 73 dBc
    - WCDMA alt-ACLR: 77 dBc
- Spectral Performance, DAC38RF86/96
  - f_DAC = 8847.36 MSPS, f_OUT = 3.7 GHz
    - 20 MHz LTE ACLR: 66 dBc
  - f_DAC = 9 GSPS, f_OUT = 1.8 GHz, –6 dBFS
    - IMD3 = 70 dBc (10-MHz tone spacing)
Dual-Band Digital Up-converter per DAC
- 6, 8, 10, 12, 16, 18, 20 or 24x Interpolation
- 4 Independent NCOs With 48-Bit Resolution
JESD204B Interface, Subclass 1
- Support for Multichip Synchronization
- Maximum Lane Rate: 12.5 Gbps
Single-Ended Output With Integrated Balun Covering 700 MHz to 3800 MHz
Internal PLL and VCO
- DAC38RF86/96: f_C(VCO) = 8.85 GHz
- DAC38RF87/97: f_C(VCO) = 5.90 GHz
Power Dissipation: 1.4 to 2.2 W/ch
Power Supplies: –1.8 V, 1 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)	6200
Features	Ultra High Speed
Rating	Catalog
Interpolation	10x, 12x, 16x, 18x, 20x, 24x, 6x, 8x
Power consumption (typ) (mW)	3800
SFDR (dB)	94
Architecture	Current Source
Operating temperature range (°C)	-40 to 85
Reference type	Ext, Int