AD7626 Analog Devices, AD7626 Datasheet - Page 9

• Manufacturer Part Number: AD7626
• Description: 16-Bit, 10 MSPS, PulSAR Differential ADC
• Manufacturer: Analog Devices

Specifications of AD7626

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 10MSPS
• Interface: LVDS,Ser
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: SAR
• Pkg Type: CSP

Pin No.
23
24
25, 26, 28
27
29, 30, 32
31
EP
1
AI = analog input; AI/O = bidirectional analog; AO = analog output; DI = digital input; DO = digital output; P = power.
Mnemonic
IN+
GND
GND
REF
GND
Exposed pad
CAP2
Type
AI
P
AO
P
AI/O
P
1
Description
Differential Positive Analog Input. Referenced to and must be driven 180° out of phase with IN−.
Ground.
Connect all three CAP2 pins together and decouple them with the shortest trace possible to a single
10 μF, low ESR, low ESL capacitor. The other side of the capacitor must be placed close to Pin 27 (GND).
Ground. Return path for the 10 μF capacitor connected to Pin 25, Pin 26, and Pin 28.
Buffered Reference Voltage. When using the internal reference or the 1.2 V external reference (REFIN
input), the 4.096 V system reference is produced at this pin. When using an external reference, such
as the
all three REF pins together and decouple them with the shortest trace possible to a single 10 μF, low
ESR, low ESL capacitor. The other side of the capacitor must be placed close to Pin 31 (GND).
Ground. Return path for the 10 μF capacitor connected to Pin 29, Pin 30, and Pin 32.
The exposed pad is located on the underside of the package. Connect the exposed pad to the
ground plane of the PCB using multiple vias. See the Exposed Paddle section for more information.
ADR434
or the ADR444, the internal reference buffer must be disabled. In either case, connect
Rev. A | Page 9 of
AD7626