AD9639 Analog Devices, Inc., AD9639 Datasheet - Page 9

• Manufacturer Part Number: AD9639
• Description: Quad, 12-bit, 170 Msps/210 Msps Serial Output 1.8 V Adc
• Manufacturer: Analog Devices, Inc.

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 7. Pin Function Descriptions
Pin No.
0
1, 5, 6, 19, 36, 49, 54,
63, 72
2
3
4, 7, 9, 12, 13, 14, 15,
18, 20, 21, 41, 42, 43,
46, 48, 55, 57, 60, 61,
62, 64, 65, 66, 69, 71
8
10
11
16
17
22
23, 34
24, 33
25
26
27
28
29
30
Mnemonic
AGND
NC
TEMPOUT
RBIAS
AVDD
VCM D
VIN − D
VIN + D
CLK−
CLK+
RESET
DRGND
DRVDD
DOUT + D
DOUT − D
DOUT + C
DOUT − C
DOUT + B
DOUT − B
TEMPOUT
NOTES
1. NC = NO CONNECT.
2. THE EXPOSED PADDLE MUST BE SOLDERED TO THE GROUND PLANE
FOR THE LFCSP PACKAGE. SOLDERING THE EXPOSED PADDLE TO
THE PCB INCREASES THE RELIABILITY OF THE SOLDER JOINTS,
MAXIMIZING THE THERMAL CAPABILITY OF THE PACKAGE.
VIN + D
VIN – D
VCM D
RBIAS
AVDD
AVDD
AVDD
AVDD
AVDD
AVDD
AVDD
AVDD
CLK+
CLK–
NC
NC
NC
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
Description
Analog Ground (Exposed Paddle). The exposed paddle must be soldered to the ground
plane. Soldering the exposed paddle to the PCB increases the reliability of the solder joints,
maximizing the thermal capability of the package.
No Connection.
Output Voltage to Monitor Temperature.
External Resistor to Set the Internal ADC Core Bias Current.
1.8 V Analog Supply.
Common-Mode Output Voltage Reference (0.5 × AVDD).
ADC D Analog Input Complement.
ADC D Analog Input True.
Clock Input Complement.
Clock Input True.
Reset Enable Pin. Resets the digital output timing.
Digital Output Driver Ground.
1.8 V Digital Output Driver Supply.
ADC D Digital Output True.
ADC D Digital Output Complement.
ADC C Digital Output True.
ADC C Digital Output Complement.
ADC B Digital Output True.
ADC B Digital Output Complement.
PIN 1
INDICATOR
Figure 3. Pin Configuration
PIN 0 = EPAD = AGND
Rev. 0 | Page 9 of 36
(Not to Scale)
AD9639
TOP VIEW
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
NC
PGM0
PGM1
PGM2
PGM3
NC
AVDD
VCM A
AVDD
VIN – A
VIN + A
AVDD
AVDD
AVDD
CSB
SCLK
SDI/SDIO
SDO
AD9639