DAC38RF90 datasheet(55/152 Pages) TI1

部件名	DAC38RF90

功能描述	Dual- or Single-Channel, Single-Ended or Differential-Output, 14-bit, 9-GSPS, RF-Sampling DAC with JESD204B Interface and On-Chip PLL

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制造商	TI1 [Texas Instruments]

网页	http://www.ti.com

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16

xN

x

sin(x)

48-bit

NCO2

cos

sin

48-bit

NCO1

cos

sin

CMIX control

(±n*Fs/4)

Input

Mux

Multiband

summation

x

sin(x)

PAP

Gain

PAP

Gain

From 2nd

multi-DUC

Delay

I

Q

I

Q

Path AB

Path CD

55

DAC38RF80, DAC38RF83, DAC38RF84

DAC38RF85, DAC38RF90, DAC38RF93

www.ti.com

SLASEA3 – DECEMBER 2016

Product Folder Links: DAC38RF80 DAC38RF83 DAC38RF84 DAC38RF85 DAC38RF90 DAC38RF93

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Figure 49. DAC38RFxx multi-DUC Signal Processing Block Diagram

8.3.17.1 Multi-DUC input

Each multi-DUC, accepts data from up to 8 Serdes lanes. A crossbar switch allows any Serdes lane to be

mapped to any other Serdes lane. The crossbar switch is controlled by fields OCTETPATHx_SEL (x = [0..7]) in

Registers JESD_CROSSBAR1 (8.5.57) and JESD_CROSSBAR2 (8.5.58).

As shown in Table 9, the multiband DUC can be configured as either a single DUC with 1 IQ input, or a dual

DUC with 2 IQ inputs, which is selected by asserting field DUAL_IQ in register MULTIDUC_CFG1 (8.5.13).

8.3.17.2 Interpolation Filters

The digital upconverter first increases the sample rate of the IQ signal from the input sample rate to the final

DAC sample rate through a series of interpolation filters. Different sets of filters are used to achieve different

rates, as shown in Table 34. The interpolation rate is selected by field INTERP in register MULTIDUC_CFG1

(8.5.13).

Table 34. FIR filters Used for Different Interpolation Rates

FILTERS USED

Interpolation

Rate

FIR0 (2x)

FIR1 (2x)

LPFIR0_5X

FIR2 (2x)

LPFIR0_3X

FIR3 (2x)

LPFIR1_3X

6

x

8

x

10

x

12

x

16

x

18

x

20

x

24

x

类似零件编号 - DAC38RF90

制造商	部件名	数据表	功能描述
Texas Instruments	DAC38RF90	3Mb / 155P	[Old version datasheet] Dual- or Single-Channel, Single-Ended or Differential-Output, 14-bit, 9-GSPS, RF-Sampling DAC with JESD204B Interface and On-Chip PLL
	DAC38RF90	3Mb / 155P	[Old version datasheet] Dual- or Single-Channel, Single-Ended or Differential Output, 14-Bit, 9-GSPS, RF-Sampling DAC With JESD204B Interface and On-Chip PLL
	DAC38RF90IAAV	3Mb / 155P	[Old version datasheet] Dual- or Single-Channel, Single-Ended or Differential-Output, 14-bit, 9-GSPS, RF-Sampling DAC with JESD204B Interface and On-Chip PLL
	DAC38RF90IAAV	3Mb / 155P	[Old version datasheet] Dual- or Single-Channel, Single-Ended or Differential Output, 14-Bit, 9-GSPS, RF-Sampling DAC With JESD204B Interface and On-Chip PLL
	DAC38RF90IAAVR	3Mb / 155P	[Old version datasheet] Dual- or Single-Channel, Single-Ended or Differential-Output, 14-bit, 9-GSPS, RF-Sampling DAC with JESD204B Interface and On-Chip PLL

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类似说明 - DAC38RF90

制造商	部件名	数据表	功能描述
Texas Instruments	DAC38RF80	3Mb / 155P	[Old version datasheet] Dual- or Single-Channel, Single-Ended or Differential-Output, 14-bit, 9-GSPS, RF-Sampling DAC with JESD204B Interface and On-Chip PLL
	DAC38RF80_017	3Mb / 155P	[Old version datasheet] Dual- or Single-Channel, Single-Ended or Differential Output, 14-Bit, 9-GSPS, RF-Sampling DAC With JESD204B Interface and On-Chip PLL
	DAC38RF86	2Mb / 141P	[Old version datasheet] Dual- or Single-Channel, Single-Ended, 14-bit, 9-GSPS, RF-Sampling DAC with JESD204B Interface and On-Chip GSM PLL
	DAC38RF82	2Mb / 139P	[Old version datasheet] Dual-Channel, Differential-Output, 14-bit, 9-GSPS, RF-Sampling DAC with JESD204B Interface, On-Chip PLL and Wide-Band Interpolation
	DAC38RF82	3Mb / 140P	[Old version datasheet] Dual-Channel, Differential-Output, 14-Bit, 9-GSPS, RF-Sampling DAC With JESD204B Interface, On-Chip PLL and Wide-Band Interpolation
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