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| 型號： | AD5405YCP-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | Dual 12-Bit, High Bandwidth, Multiplying DAC with 4-Quadrant Resistors and Parallel Interface |
| 中文描述： | PARALLEL, WORD INPUT LOADING, 0.015 us SETTLING TIME, 12-BIT DAC, QCC40 |
| 封裝： | 6 X 6 MM, ROHS COMPLIANT, MO-220VJJD-2, LFCSP-40 |
| 文件頁數(shù)： | 7/24頁 |
| 文件大小： | 925K |
| 代理商： | AD5405YCP-REEL7 |
AD5405
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Rev. 0 | Page 7 of 24
PIN 1
AD5405
TOP VIEW
1
2
3
4
5
6
7
8
9
R1A
R2A
R2_3A
R3A
V
A
DGND
LDAC
DAC A/B
NC
10
DB11
NC = NO CONNECT
D
D
D
D
D
D
D
D
D
D
30 R1B
29 R2B
28 R2_3B
27 R3B
26V
B
25VDD
24 CLR
23 R/W
22 CS
21 DB0
4
F
A
3
O
2
A
3
O
1
3
3
3
3
3
O
1
B
3
O
2
B
3
F
B
0
Figure 4. Pin Configuration
Table 4. Pin Function Descriptions
Pin No.
Mnemonic
1 to 4
R1A to R3A
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.
5, 26
6
7
V
REF
A, V
REF
B
DGND
LDAC
8
9, 34, 35,
36, 37
10 to 21
22
DAC A/B
NC
DB11 to DB0
CS
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.
23
R/W
24
25
26 to 30
CLR
V
DD
R3B to R1B
32
I
OUT
2B
33
38
39
I
OUT
1B
I
OUT
1A
I
OUT
2A
31, 40
R
FB
B, R
FB
A
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