AD9629 Analog Devices, AD9629 Datasheet - Page 10

• Manufacturer Part Number: AD9629
• Description: 12-Bit, 20/40/65/80 MSPS, 1.8 V Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9629

• Resolution (bits): 12bit
• # Chan: 1
• Sample Rate: 80MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: 2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

AD9629
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 8. Pin Function Description
Pin No.
0 (EPAD)
1, 2
3, 24, 29, 32
4
5
6
7, 8
9 to 12, 14 to 21
13
22
23
25
26
27
28
30, 31
Mnemonic
GND
CLK+, CLK−
AVDD
CSB
SCLK/DFS
SDIO/PDWN
NC
D0 (LSB) to
D11 (MSB)
DRVDD
DCO
MODE/OR
VREF
SENSE
VCM
RBIAS
VIN−, VIN+
Description
Exposed Paddle. The exposed paddle is the only ground connection. It must be soldered to the analog
ground of the customer’s PCB to ensure proper functionality and maximize heat dissipation, noise, and
mechanical strength benefits.
Differential Encode Clock. PECL, LVDS, or 1.8 V CMOS inputs.
1.8 V Supply Pin for ADC Core Domain.
SPI Chip Select. Active low enable. 30 kΩ internal pull-up.
SPI Clock Input in SPI Mode (SCLK). 30 kΩ internal pull-down.
Data Format Select in Non-SPI Mode (DFS). Static control of data output format. 30 kΩ internal pull-down.
DFS high = twos complement output; DFS low = offset binary output.
SPI Data Input/Output (SDIO). Bidirectional SPI data I/O in SPI mode. 30 kΩ internal pull-down.
Non-SPI Mode Power-Down (PDWN). Static control of power-down with 30 kΩ internal pull-down. See
Table 14 for details.
Do Not Connect.
ADC Digital Outputs.
1.8 V to 3.3 V Supply Pin for Output Driver Domain.
Data Clock Digital Output.
Chip Mode Select Input or Out-of-Range (OR) Digital Output in SPI Mode.
Default = out-of-range (OR) digital output (SPI Register 0x2A[0] = 1).
Option = chip mode select input (SPI Register 0x2A[0] = 0).
Chip power down (SPI Register 0x08[7:5] = 100b).
Chip standby (SPI Register 0x08[7:5] = 101b).
Normal operation, output disabled (SPI Register 0x08[7:5] = 110b).
Normal operation, output enabled (SPI Register 0x08[7:5] = 111b).
Out-of-Range (OR) digital output only in non-SPI mode.
1.0 V Voltage Reference Input/Output. See Table 10.
Reference Mode Selection. See Table 10.
Analog Output Voltage at Mid AVDD Supply. Sets common mode of the analog inputs.
Sets Analog Current Bias. Connect to 10 kΩ (1% tolerance) resistor to ground.
ADC Analog Inputs.
SDIO/PDWN
NOTES
1. NC = NO CONNECT.
2. THE EXPOSED PADDLE MUST BE SOLDERED TO
SCLK/DFS
THE PCB GROUND TO ENSURE PROPER HEAT DISSIPATION,
NOISE, AND MECHANICAL STRENGTH BENEFITS.
AVDD
CLK+
CLK–
CSB
NC
NC
1
2
3
4
5
6
7
8
Figure 3. Pin Configuration
Rev. 0 | Page 10 of 32
(Not to Scale)
PIN 1
INDICATOR
AD9629
TOP VIEW
24 AVDD
23 MODE/OR
22 DCO
21 D11 (MSB)
20 D10
19 D9
18 D8
17 D7