AD9745-EBZ View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
AD9745-EBZ Datasheet PDF : 28 Pages
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AD9741/AD9743/AD9745/AD9746/AD9747
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
CVDD18 1
CVSS 2
CLKP 3
CLKN 4
CVSS 5
CVDD18 6
DVSS 7
DVDD18 8
P1D7 9
P1D6 10
P1D5 11
P1D4 12
P1D3 13
P1D2 14
P1D1 15
P1D0 16
NC 17
NC 18
NC = NO CONNECT
PIN 1
INDICATOR
AD9741
(TOP VIEW)
54 FSADJ
53 RESET
52 CSB
51 SCLK
50 SDIO
49 SDO
48 DVSS
47 DVDD18
46 NC
45 NC
44 NC
43 NC
42 NC
41 NC
40 NC
39 NC
38 P2D0
37 P2D1
Figure 2. AD9741 Pin Configuration
Table 8. AD 9741 Pin Function Descriptions
Pin No.
Mnemonic
Description
1, 6
CVDD18
Clock Supply Voltage (1.8 V).
2, 5
CVSS
Clock Supply Common (0 V).
3
CLKP
Differential DAC Clock Input.
4
CLKN
Complementary Differential DAC Clock Input.
7, 28, 48
DVSS
Digital Supply Common (0 V).
8, 47
DVDD18
Digital Core Supply Voltage (1.8 V).
9 to 16
P1D<7:0>
Port 1 Data Bit Inputs.
17 to 24, 26, 30, 39 to 46 NC
No Connect.
25
DCO
Data Clock Output. Use to clock data source.
27
DVDD33
Digital I/O Supply Voltage (3.3 V).
29
IQSEL
I/Q Framing Signal for Single-Port Mode Operation.
31 to 38
P2D<7:0>
Port 2 Data Bit Inputs.
49
SDO
Serial Peripheral Interface Data Output.
50
SDIO
Serial Peripheral Interface Data Input and Optional Data Output.
51
SCLK
Serial Peripheral Interface Clock Input.
52
CSB
Serial Peripheral Interface Chip Select Input. Active low.
53
RESET
Hardware Reset. Active high.
54
FSADJ
Full-Scale Current Output Adjust. Connect a 10 kΩ resistor to AVSS.
55
REFIO
Reference Input/Output. Connect a 0.1 μF capacitor to AVSS.
56, 57, 71, 72
AVDD33
Analog Supply Voltage (3.3 V).
58, 61, 64, 67, 70
AVSS
Analog Supply Common (0 V).
59
IOUT2P
DAC2 Current Output True. Sources full-scale current when input data bits are all 1.
60
IOUT2N
DAC2 Current Output Complement. Sources full-scale current when data bits are all 0.
62
AUX2P
Auxiliary DAC2 Default Current Output Pin.
63
AUX2N
Auxiliary DAC2 Optional Output Pin. Enable through SPI.
65
AUX1N
Auxiliary DAC1 Optional Output Pin. Enable through SPI.
66
AUX1P
Auxiliary DAC1 Default Current Output Pin.
68
IOUT1N
Complementary DAC1 Current Output. Sources full-scale current when data bits are all 0.
69
IOUT1P
DAC1 Current Output. Sources full-scale current when data bits are all 1.
EPAD
AVSS
Exposed Thermal Pad. Must be soldered to copper pour on top surface of PCB for mechanical
stability and must be electrically tied to low impedance GND plane for low noise performance.
Rev. 0 | Page 9 of 28
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