AD9704 Datasheet, PDF (14/52 Pages) Analog Devices – 8-/10-/12-/14-Bit, 175 MSPS TxDAC D/A Converters

AD9704/AD9705/AD9706/AD9707
AD9704
DB1 1
DB0 (LSB) 2
DVDD 3
NC 4
NC 5
NC 6
NC 7
NC 8
PIN 1
INDICATOR
AD9704
TOP VIEW
(Not to Scale)
24 FS ADJ
23 REFIO
22 ACOM
21 IOUTA
20 IOUTB
19 OTCM
18 AVDD
17 PIN/SPI/RESET
NC = NO CONNECT
Figure 6. AD9704 Pin Configuration
Table 12. AD9704 Pin Function Descriptions
Pin No. Mnemonic Description
27
DB7 (MSB)
Most Significant Data Bit (MSB).
28 to 32, DB6 to DB1
1
Data Bit 6 to Data Bit 1.
2
DB0 (LSB)
Least Significant Data Bit (LSB).
25
SLEEP/CSB
In pin mode, active high powers down chip.
In SPI mode, this pin is the serial port chip select (active low).
24
FS ADJ
Full-Scale Current Output Adjust.
23
REFIO
Reference Input/Output. Serves as reference input when internal reference disabled. Serves as 1.0 V reference
output when internal reference activated. Requires a 0.1 μF capacitor to ACOM when internal reference activated.
22
ACOM
Analog Common.
21
IOUTA
DAC Current Output. Full-scale current is sourced when all data bits are 1s.
20
IOUTB
Complementary DAC Current Output. Full-scale current is sourced when all data bits are 0s.
19
OTCM
Adjustable Output Common Mode. Refer to the Theory of Operation section for details.
18
AVDD
Analog Supply Voltage (1.7 V to 3.6 V).
17
PIN/SPI/RESET Selects SPI mode or pin mode operation. Active high for pin mode operation. Active low for SPI mode
operation. Pulse high to reset SPI registers to default values.
16
MODE/SDIO In pin mode, this selects the input data format. Connect to DCOM for straight binary, DVDD for twos complement.
In SPI mode, this pin acts as SPI data input/output.
15
CMODE/SCLK In pin mode, this pin selects the clock input type. Connect to CLKCOM for single-ended clock receiver
(drive CLK+ and float CLK−). Connect to CLKVDD for differential receiver.
In SPI mode, this pin is the serial data clock input.
14
CLKCOM
Clock Common.
13
CLK−
Differential Clock Input.
12
CLK+
Differential Clock Input.
11
CLKVDD
Clock Supply Voltage (1.7 V to 3.6 V).
10, 26 DCOM
Digital Common.
4 to 9 NC
No Connect.
3
DVDD
Digital Supply Voltage (1.7 V to 3.6 V).
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