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參數(shù)資料
| 型號(hào)： | EVAL-AD7762EDZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 28/29頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL CONTROL AD7762 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| ADC 的數(shù)量： | 1 |
| 位數(shù)： | 24 |
| 采樣率（每秒）： | 625k |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 輸入范圍： | ±3.25 Vpp |
| 在以下條件下的電源（標(biāo)準(zhǔn)）： | 958mW @ 625kSPS |
| 工作溫度： | -40°C ~ 85°C |
| 已用 IC / 零件： | AD7762 |
| 已供物品： | 板，CD |
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Data Sheet
AD7762
Rev. A | Page 7 of 28
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
64
DG
ND
63
V
DRI
V
E
62
DG
ND
61
DB0
60
DB1
59
DB2
58
DB3
57
DB4
56
DB5
55
DB6
54
DB7
53
DG
ND
52
DB8
51
DB9
50
DB10
49
DB
1
47
DB13
46
DB14
45
DB15
42
DGND
43
DGND
44
VDRIVE
48
DB12
NOTES
1. CONNECT THE EXPOSED PAD TO AGNDx WITH SIX TO EIGHT VIAS.
41
DVDD
40
CS
39
RD/WR
37
RESET
36
SYNC
35
DGND
34
AGND1
33
AVDD1
38
DRDY
2
MCLKGND
3
MCLK
4
AVDD2
7
AGND1
6
AVDD1
5
AGND2
1
DGND
8
DECAPA
9
REFGND
10
VREF+
12
AVDD4
13
AGND2
14
AVDD2
15
AVDD2
16
AGND2
11
AGND4
PIN 1
17
R
BI
AS
18
AG
ND2
19
V
IN
A+
20
V
IN
A–
21
V
O
UT
A–
22
V
O
UT
A+
23
AG
ND3
24
A
V
DD3
25
V
IN
+
26
V
IN
–
27
A
V
DD2
28
AG
ND2
29
AG
ND3
30
DE
CAP
B
31
AG
ND3
32
AG
ND3
AD7762
TOP VIEW
(Not to Scale)
05477-
005
Figure 4. 64-Lead TQFP Pin Configuration
Table 5. Pin Function Descriptions
Pin No.
Mnemonic
Description
6, 33
AVDD1
2.5 V Power Supply for Modulator. These pins should be decoupled to AGND1 with 100 nF and 10 F
capacitors on each pin.
4, 14, 15, 27
AVDD2
5 V Power Supply. These pins should be decoupled to AGND2 with 100 nF capacitors on each of Pin 4,
Pin 14, and Pin 15. Pin 27 should be connected to Pin 14 via a 15 nH inductor.
24
AVDD3
3.3 V to 5 V Power Supply for Differential Amplifier. These pins should be decoupled to AGND3 with a
100 nF capacitor.
12
AVDD4
3.3 V to 5 V Power Supply for Reference Buffer. This pin should be decoupled to AGND4 with a
10 nF capacitor in series with a 10 resistor.
7, 34
AGND1
Power Supply Ground for Analog Circuitry Powered by AVDD1.
5, 13, 16, 18, 28
AGND2
Power Supply Ground for Analog Circuitry Powered by AVDD2.
23, 29, 31, 32
AGND3
Power Supply Ground for Analog Circuitry Powered by AVDD3.
11
AGND4
Power Supply Ground for Analog Circuitry Powered by AVDD4.
9
REFGND
Reference Ground. Ground connection for the reference voltage.
41
DVDD
2.5 V Power Supply for Digital Circuitry and FIR Filter. This pin should be decoupled to DGND with a
100 nF capacitor.
44, 63
VDRIVE
Logic Power Supply Input, 1.8 V to 2.5 V. The voltage supplied at these pins determines the operating
voltage of the logic interface. Both these pins must be connected together and tied to the same supply.
Each pin should also be decoupled to DGND with a100 nF capacitor.
1, 35, 42, 43,
53, 62, 64
DGND
Ground Reference for Digital Circuitry.
19
VINA+
Positive Input to Differential Amplifier.
20
VINA
Negative Input to Differential Amplifier.
21
VOUTA
Negative Output from Differential Amplifier.
22
VOUTA+
Positive Output from Differential Amplifier.
25
VIN+
Positive Input to the Modulator.
26
VIN
Negative Input to the Modulator.
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