AD5405YCP-REEL7 Analog Devices, AD5405YCP-REEL7 Datasheet - Page 7

• Manufacturer Part Number: AD5405YCP-REEL7
• Description: Dual 12-Bit/ High Bandwidth/ Multiplying DAC with 4-Quadrant Resistors and Parallel Interface
• Manufacturer: Analog Devices

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 4. Pin Function Descriptions
Pin No.
1 to 4
5, 26
6
7
8
9, 34, 35,
36, 37
10 to 21
22
23
24
25
26 to 30
32
33
38
39
31, 40
Mnemonic
R1A to R3A
V
DGND
LDAC
DAC A/B
NC
DB11 to DB0
CS
R/W
CLR
V
R3B to R1B
I
I
I
I
R
OUT
OUT
OUT
OUT
REF
DD
FB
B, R
2B
1B
1A
2A
A, V
FB
REF
A
B
Function
DAC A 4-Quadrant Resistors. Allow a number of configuration modes, including bipolar operation with
minimum of external components.
DAC Reference Voltage Input Terminals.
Digital Ground Pin.
Load DAC Input. Allows asynchronous or synchronous updates to the DAC output. The DAC is asynchronously
updated when this signal goes low. Alternatively, if this line is held permanently low, an automatic or
synchronous update mode is selected whereby the DAC is updated on the rising edge of CS.
Selects DAC A or B. Low selects DAC A, while high selects DAC B.
Not internally connected.
Parallel Data Bits 11 through 0.
Chip Select Input. Active low. Used in conjunction with R/W to load parallel data to the input latch or to read
data from the DAC register. Edge sensitive; when pulled high, the DAC data is latched.
Read/Write. When low, used in conjunction with CS to load parallel data. When high, used in conjunction with
CS to read back contents of DAC register.
Active Low Control Input. Clears DAC output and input and DAC registers.
Positive Power Supply Input. These parts can be operated from a supply of 2.5 V to 5.5 V.
DAC B 4-Quadrant Resistors. Allow a number of configuration modes, including bipolar operation with a
minimum of external components.
DAC A Analog Ground. This pin typically should be tied to the analog ground of the system, but may be biased
to achieve single-supply operation.
DAC B Current Outputs.
DAC A Current Outputs.
DAC A Analog Ground. This pin typically should be tied to the analog ground of the system, but may be biased
to achieve single-supply operation.
External Amplifier Output.
NC = NO CONNECT
DAC A/B
R2_3A
V
DGND
LDAC
DB11
REF
R1A
R2A
R3A
NC
A
10
1
2
3
4
5
6
7
8
9
Figure 4. Pin Configuration
Rev. 0 | Page 7 of 24
PIN 1
INDICATOR
AD5405
TOP VIEW
30 R1B
29 R2B
28 R2_3B
27 R3B
26 V
25 V DD
24 CLR
23 R/W
22 CS
21 DB0
REF
B
AD5405