AD9238BST-40 Analog Devices Inc, AD9238BST-40 Datasheet - Page 9

• Manufacturer Part Number: AD9238BST-40
• Description: IC, ADC, 12BIT, 40MSPS, QFP-64
• Manufacturer: Analog Devices Inc

Specifications of AD9238BST-40

• Resolution (bits): 12bit
• Sampling Rate: 40MSPS
• Input Channel Type: Differential
• Data Interface: Parallel
• Supply Voltage Range - Analog: 2.7V To 3.6V
• Supply Current: 110mA
• Digital Ic Case Style: QFP
• Rohs Status: RoHS non-compliant
• Number Of Bits: 12
• Sampling Rate (per Second): 40M
• Number Of Converters: 2
• Power Dissipation (max): 330mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With: AD9238BCP-65EBZ - BOARD EVAL WITH AD9238BCP-65AD9238BCP-40EBZ - BOARD EVAL WITH AD9238BCP-40
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table 6. 64-Lead LQFP and 64-Lead LFCSP Pin Function Descriptions
Pin No.
1, 4, 13, 16
2
3
5, 12, 17, 64
6
7
8
9
10
11
14
15
18
19
20
21
22
23, 24, 42, 43
25 to 27,
30 to 38
28, 40, 53
29, 41, 52
39
44 to 51,
54 to 57
58
59
60
61
62
63
Mnemonic
AGND
VIN+_A
VIN–_A
AVDD
REFT_A
REFB_A
VREF
SENSE
REFB_B
REFT_B
VIN−_B
VIN+_B
CLK_B
DCS
DFS
PDWN_B
OEB_B
DNC
D0_B (LSB) to
D11_B (MSB)
DRGND
DRVDD
OTR_B
D0_A (LSB) to
D11_A (MSB)
OTR_A
OEB_A
PDWN_A
MUX_SELECT
SHARED_REF
CLK_A
EP
Description
Analog Ground.
Analog Input Pin (+) for Channel A.
Analog Input Pin (−) for Channel A.
Analog Power Supply.
Differential Reference (+) for Channel A.
Differential Reference (−) for Channel A.
Voltage Reference Input/Output.
Reference Mode Selection.
Differential Reference (−) for Channel B.
Differential Reference (+) for Channel B.
Analog Input Pin (−) for Channel B.
Analog Input Pin (+) for Channel B.
Clock Input Pin for Channel B.
Enable Duty Cycle Stabilizer (DCS) Mode (Tie High to Enable).
Data Output Format Select Bit (Low for Offset Binary, High for Twos Complement).
Output Enable Bit for Channel B:
Do Not Connect Pins. Should be left floating.
Channel B Data Output Bits.
Digital Output Ground.
Digital Output Driver Supply. Must be decoupled to DRGND with a minimum 0.1 μF capacitor.
Recommended decoupling is 0.1 μF capacitor in parallel with 10 μF.
Out-of-Range Indicator for Channel B.
Channel A Data Output Bits.
Out-of-Range Indicator for Channel A.
Output Enable Bit for Channel A:
Power-Down Function Selection for Channel A:
Data Multiplexed Mode. (See Data Format section for how to enable; high setting disables
output data multiplexed mode).
Shared Reference Control Bit (Low for Independent Reference Mode, High for Shared
Reference Mode).
Clock Input Pin for Channel A.
For the 64-Lead LFCSP only, there is an exposed pad that must connect to AGND.
Power-Down Function Selection for Channel B:
Logic 0 enables Data Bus B.
Logic 1 sets outputs to High-Z.
Logic 0 enables Data Bus A.
Logic 1 sets outputs to High-Z.
Logic 0 enables Channel A.
Logic 1 powers down Channel A. (Outputs static, not High-Z.)
Logic 0 enables Channel B.
Logic 1 powers down Channel B. (Outputs static, not High-Z.)
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