DAC38RF84 Texas instruments

DAC38RF84

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DAC38RF84

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Описание

The DAC38RFxx is a family of high-performance, dual/single-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. 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. An optional low-jitter PLL/VCO simplifies the DAC sampling clock generation by allowing use of a lower frequency reference clock.

14-Bit Resolution
Maximum DAC Sample Rate: 9 GSPS
Key Specifications:
- RF Full-Scale Output Power at 2.1 GHz:
  - DAC38RF80/90/84: 0 dBm
  - DAC38RF83/93/85: 3 dBm (with 2:1 balun)
- Spectral Performance(on-chip PLL, DIFF):
  - f_DAC = 5898.24 MSPS, f_OUT = 2.14 GHz
    - WCDMA ACLR: 75 dBc
    - WCDMA alt-ACLR: 77 dBc
  - f_DAC = 8847.36 MSPS, f_OUT = 3.7 GHz
    - 20 MHz LTE ACLR: 63 dBc
  - f_DAC = 9 GSPS, f_OUT = 1.8 GHz
    - IMD3 = 70 dBc (–6 dBFS, 10-MHz tone spacing)
    - NSD = –157 dBc/Hz
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 (DAC38RF80/90/84) Covering 700 MHz to 3800 MHz
Internal PLL and VCO With Bypass
- f_C(VCO) = 5.9 or 8.9 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	1
Interface type	JESD204B
Sample/update rate (Msps)	9000
Features	Ultra High Speed
Rating	Catalog
Interpolation	10x, 12x, 16x, 18x, 20x, 24x, 6x, 8x
Power consumption (typ) (mW)	2195
SFDR (dB)	94
Architecture	Current Source
Operating temperature range (°C)	-40 to 85
Reference type	Ext, Int