AD9705 Analog Devices, AD9705 Datasheet - Page 15

• Manufacturer Part Number: AD9705
• Manufacturer: Analog Devices

Specifications of AD9705

• Resolution (bits): 10bit
• Dac Update Rate: 175MSPS
• Dac Settling Time: 11ns
• Max Pos Supply (v): +3.6V
• Single-supply: Yes
• Dac Type: Current Out
• Dac Input Format: Par

Data Sheet
AD9704
Table 12. AD9704 Pin Function Descriptions
Pin No.
28 to 32, 1
2
3
4 to 9
10, 26
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
27
DB0 (LSB)
DVDD
DCOM
CLKVDD
CLK+
CLK−
CLKCOM
CMODE/SCLK
MODE/SDIO
PIN/SPI/RESET
AVDD
OTCM
IOUTB
IOUTA
ACOM
REFIO
SLEEP/CSB
DB7 (MSB)
EPAD
Mnemonic
DB6 to DB1
NC
FS ADJ
Description
Data Bit 6 to Data Bit 1.
Least Significant Data Bit (LSB).
Digital Supply Voltage (1.7 V to 3.6 V).
No Connect.
Digital Common.
Clock Supply Voltage (1.7 V to 3.6 V).
Positive Differential Clock Input.
Negative Differential Clock Input.
Clock Common.
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.
In pin mode, this pin selects the input data format. Connect to DCOM for straight binary, and DVDD for twos
complement. In SPI mode, this pin acts as SPI data input/output.
Selects SPI Mode or Pin Mode Operation. Active high for pin mode operation and active low for SPI mode
operation. Pulse high to reset SPI registers to default values.
Analog Supply Voltage (1.7 V to 3.6 V).
Adjustable Output Common Mode. Refer to the Theory of Operation section for details.
Complementary DAC Current Output. Full-scale current is sourced when all data bits are 0s.
DAC Current Output. Full-scale current is sourced when all data bits are 1s.
Analog Common.
Reference Input/Output. Serves as reference input when internal reference disabled. Serves as 1.0 V reference output
when internal reference is activated. Requires a 0.1 μF capacitor to ACOM when internal reference is activated.
Full-Scale Current Output Adjust.
In pin mode, active high powers down chip. In SPI mode, this pin is the serial port chip select (active low).
Most Significant Data Bit (MSB).
It is recommended that the exposed pad be thermally connected to a copper ground plane for enhanced
electrical and thermal performance.
DB0 (LSB)
NOTES
1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN.
2. IT IS RECOMMENDED THAT THE EXPOSED PAD BE
THERMALLY CONNECTED TO A COPPER GROUND
PLANE FOR ENHANCED ELECTRICAL AND THERMAL
PERFORMANCE.
DVDD
DB1
NC
NC
NC
NC
NC
Figure 6. AD9704 Pin Configuration
1
2
3
4
5
6
7
8
Rev. B | Page 15 of 44
(Not to Scale)
PIN 1
INDICATOR
AD9704
TOP VIEW
24
23
22
21
20
19
18
17
FS ADJ
REFIO
ACOM
IOUTA
IOUTB
OTCM
AVDD
PIN/SPI/RESET
AD9704/AD9705/AD9706/AD9707