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AD9773-EB 数据表(PDF) 11 Page - Analog Devices

部件名 AD9773-EB
功能描述  12-Bit, 160 MSPS, 2x/4x/8x Interpolating Dual TxDAC D/A Converter
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD9773-EB 数据表(HTML) 11 Page - Analog Devices

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AD9773
Rev. D | Page 11 of 60
Table 8. Pin Function Descriptions
Pin No.
Mnemonic
Description
1, 3
CLKVDD
Clock Supply Voltage.
2
LPF
PLL Loop Filter.
4, 7
CLKGND
Clock Supply Common.
5
CLK+
Differential Clock Input.
6
CLK−
Differential Clock Input.
8
DATACLK/PLL_LOCK
With the PLL enabled, this pin indicates the state of the PLL. A read of a Logic 1 indicates the
PLL is in the locked state. Logic 0 indicates the PLL has not achieved lock. This pin can also be
programmed to act as either an input or output (Address 02h, Bit 3) DATACLK signal running
at the input data rate.
9, 17, 25,
35, 44, 52
DGND
Digital Common.
10, 18, 26,
36, 43, 51
DVDD
Digital Supply Voltage.
11 to 16,
19 to 24,
P1B11 (MSB) to P1B0 (LSB)
Port 1 Data Inputs.
27 to 30,
47 to 50
NC
No Connect.
31
IQSEL/P2B11 (MSB)
In one-port mode, IQSEL = 1 followed by a rising edge of the differential input clock latches
the data into the I channel input register. IQSEL = 0 latches the data into the Q channel input
register. In two-port mode, this pin becomes the Port 2 MSB.
32
ONEPORTCLK/P2B10
With the PLL disabled and the AD9773 in one-port mode, this pin becomes a clock output
that runs at twice the input data rate of the I and Q channels. This allows the AD9773 to
accept and demux interleaved I and Q data to the I and Q input registers.
33, 34, 37 to
42, 45, 46
P2B9 to P2B0 (LSB)
Port 2 Data Inputs.
53
SPI_SDO
In the case where SDIO is an input, SDO acts as an output. When SDIO becomes an output,
SDO enters a high-Z state. This pin can also be used as an output for the data rate clock. For
more information, see the Two-Port Data Input Mode section.
54
SPI_SDIO
Bidirectional Data Pin. Data direction is controlled by Bit 7 of Register Address 00h. The
default setting for this bit is 0, which sets SDIO as an input.
55
SPI_CLK
Data input to the SPI port is registered on the rising edge of SPI_CLK. Data output on the SPI
port is registered on the falling edge.
56
SPI_CSB
Chip Select/SPI Data Synchronization. On momentary logic high, resets SPI port logic and
initializes instruction cycle.
57
RESET
Logic 1 resets all of the SPI port registers, including Address 00h, to their default values. A
software reset can also be done by writing a Logic 1 to SPI Register 00h, Bit 5. However, the
software reset has no effect on the bits in Address 00h.
58
REFIO
Reference Output, 1.2 V Nominal.
59
FSADJ2
Full-Scale Current Adjust, Q Channel.
60
FSADJ1
Full-Scale Current Adjust, I Channel.
61, 63, 65,
76, 78, 80
AVDD
Analog Supply Voltage.
62, 64, 66,
67, 70, 71,
74, 75, 77,
79
AGND
Analog Common.
68, 69
IOUTB2, IOUTA2
Differential DAC Current Outputs, Q Channel.
72, 73
IOUTB1, IOUTA1
Differential DAC Current Outputs, I Channel.


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