AD9640 Analog Devices, AD9640 Datasheet - Page 15

• Manufacturer Part Number: AD9640
• Description: 14-Bit, 80/105/125/150 MSPS, 1.8 V Dual Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9640

• Resolution (bits): 14bit
• # Chan: 2
• Sample Rate: 150MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: 1 V p-p,2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
Table 11. Pin Function Descriptions (Parallel CMOS Mode)
Pin No.
ADC Power Supplies
20, 64
1, 21
24, 57
36, 45, 46
0
ADC Analog
37
38
44
43
39
40
42
41
49
50
Mnemonic
DRGND
DRVDD
DVDD
AVDD
AGND,
Exposed Pad
VIN+A
VIN−A
VIN+B
VIN−B
VREF
SENSE
RBIAS
CML
CLK+
CLK−
D13B (MSB)
NOTES
1. NC = NO CONNECT.
2. THE EXPOSED THERMAL PAD ON THE BOTTOM OF THE PACKAGE PROVIDES THE
D0A (LSB)
ANALOG GROUND FOR THE PART. THIS EXPOSED PAD MUST BE CONNECTED TO
GROUND FOR PROPER OPERATION.
DRVDD
Type
Ground
Supply
Supply
Supply
Ground
Input
Input
Input
Input
Input/Output
Input
Input/Output
Output
Input
Input
DCOB
DCOA
D10B
D11B
D12B
D6B
D7B
D8B
D9B
D1A
D2A
D3A
D4A
10
12
13
14
15
16
11
Figure 6. Pin Configuration, LFCSP Parallel CMOS (Top View)
1
2
3
4
5
6
7
8
9
PIN 1
INDICATOR
Description
Digital Output Ground.
Digital Output Driver Supply (1.8 V to 3.3 V).
Digital Power Supply (1.8 V Nominal).
Analog Power Supply (1.8 V Nominal).
The exposed thermal pad on the bottom of the package provides the analog ground
for the part. This exposed pad must be connected to ground for proper operation.
Differential Analog Input Pin (+) for Channel A.
Differential Analog Input Pin (−) for Channel A.
Differential Analog Input Pin (+) for Channel B.
Differential Analog Input Pin (−) for Channel B.
Voltage Reference Input/Output.
Voltage Reference Mode Select. See Table 14 for details.
External Reference Bias Resistor.
Common Mode Level Bias Output for Analog Inputs.
ADC Clock Input—True.
ADC Clock Input—Complement.
EXPOSED PADDLE, PIN 0
(BOTTOM OF PACKAGE)
PARALLEL CMOS
Rev. B | Page 15 of 52
(Not to Scale)
AD9640
TOP VIEW
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
SCLK/DFS
SDIO/DCS
AVDD
AVDD
VIN+B
VIN–B
RBIAS
CML
SENSE
VREF
VIN–A
VIN+A
AVDD
SMI SDFS
SMI SCLK/PDWN
SMI SDO/OEB
AD9640