AD9648 Analog Devices, AD9648 Datasheet - Page 13

• Manufacturer Part Number: AD9648
• Description: 14-Bit, 125 MSPS/105 MSPS, 1.8 V Dual Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9648

• Resolution (bits): 14bit
• # Chan: 2
• Sample Rate: 125MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p,2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
Table 8. Pin Function Descriptions (Parallel CMOS Mode)
Pin No.
ADC Power Supplies
10, 19, 28, 37
49, 50, 53, 54,
59, 60, 63, 64
4, 5, 25, 26
0
ADC Analog
51
52
62
61
55
56
58
57
1
2
Digital Input
3
Mnemonic
DRVDD
AVDD
NC
AGND,
Exposed Pad
VIN+A
VIN−A
VIN+B
VIN−B
VREF
SENSE
RBIAS
VCM
CLK+
CLK−
SYNC
D0B (LSB)
NOTES
1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN.
2.
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.
DRVDD
SYNC
CLK+
CLK–
D1B
D2B
D3B
D4B
D5B
D6B
D7B
D8B
D9B
NC
NC
Type
Supply
Supply
Ground
Input
Input
Input
Input
Input/Output
Input
Input/Output
Output
Input
Input
Input
10
12
13
14
15
16
11
1
2
3
4
5
6
7
8
9
Figure 6. Parallel CMOS Pin Configuration (Top View)
PIN 1
INDICATOR
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 B.
Description
Digital Output Driver Supply (1.8 V Nominal).
No Connect. Do not connect to these pins.
Differential Analog Input Pin (+) for Channel A.
Differential Analog Input Pin (+) for Channel B.
Voltage Reference Input/Output.
Reference Mode Selection.
External Reference Bias Resistor.
Common-Mode Level Bias Output for Analog Inputs.
ADC Clock Input—True.
ADC Clock Input—Complement.
Digital Synchronization Pin. Slave mode only.
PARALLEL CMOS
Rev. 0 | Page 13 of 44
(Not to Scale)
AD9648
TOP VIEW
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
PDWN
OEB
CSB
SCLK/DFS
SDIO/DCS
ORA
D13A (MSB)
D12A
D11A
D10A
D9A
DRVDD
D8A
D7A
D6A
D5A
AD9648