參數(shù)資料
型號(hào): AD7339BS
廠商: ANALOG DEVICES INC
元件分類: 模擬信號(hào)調(diào)理
英文描述: 5 V Integrated High Speed ADC/Quad DAC System
中文描述: SPECIALTY ANALOG CIRCUIT, PQFP52
封裝: PLASTIC, QFP-52
文件頁(yè)數(shù): 7/12頁(yè)
文件大?。?/td> 179K
代理商: AD7339BS
AD7339
–7–
REV. 0
PIN FUNCTION DESCRIPTIONS
Pin Number
Mnemonic
Function
Power Supply
33
2
12
36
22
29
21
28
32
34
ADCs
31
AVDD
DVDD1
DGND1
AGND1
DVDD2
DVDD3
DGND2
DGND3
AGND2
AGND3
Analog power supply connection.
Digital power supply for the parallel DACs.
Digital ground connection for the parallel DACs.
Analog ground connection for the parallel DACs.
Digital power supply for the ADC.
Digital power supply for the ADC.
Digital ground connection for the ADC.
Digital ground connection for the ADC.
Analog ground connection for the ADC.
Analog ground connection for the reference.
AIN
Analog input to the ADC. The analog input must be appropriately ac coupled.
The AD7339 can accept an analog input of
±
1 V maximum.
ADC Input Clock, CMOS Logic Input. The analog input is sampled on the rising edge
of ADCCLK. ADCCLK is nominally set to 2.048 MHz.
Digital Output from the ADC. The 8-bit digital word from the ADC is in offset binary.
The digital output uses CMOS logic.
Digital Input. When ADCPDB is low, the ADC is powered down. While in this mode,
ADCCLK should be tied low. The ADC is powered up by taking ADCPDB high.
27
ADCCLK
26–23, 20–17
D0–D7
30
ADCPDB
Parallel DACs
45–52
DA0–DA7
Digital input to the parallel A DAC. The digital input uses CMOS logic and the word
is presented to the DAC in offset binary format.
Digital input to the parallel B DAC. The digital input uses CMOS logic and the word
is presented to the DAC in offset binary format.
Input clock to the parallel DACs. The digital words in the A and B DAC registers are
loaded into the DACs on the rising edge of DACCLK. DACCLK has a nominal fre-
quency of 2.304 MHz and uses CMOS logic.
Analog outputs from the A and B DACs. Both DACs have an analog output of VREFA/
VREFB
±
X volts where VREFA = VREFB = 2.5 V nominal and X = 1.4 V.
3–10
DB0–DB7
1
DACCLK
43, 41
DACA, DACB
PIN CONFIGURATION
14 15 16 17 18 19 20 21 22 23 24 25 26
S
1
2
3
4
5
6
7
8
9
10
11
13
12
52 51 50 49 48
43 42 41 40
47 46 45 44
39
38
37
36
35
34
33
32
31
30
29
28
27
PIN 1
TOP VIEW
(Not to Scale)
D
D
D
D
D
D
D
D
V
D
V
D
S
DACCLK
DVDD1
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
DACPDB
DGND1
SDACPDB
SDAC1F
SDAC0S
SDAC0F
AGND1
VREF
AGND3
AVDD
AGND
AIN
ADCPDB
DVDD3
DGND3
ADCCLK
L
S
D
D
D
D
D
D
D
D
D
D
AD7339
2
相關(guān)PDF資料
PDF描述
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