AD7655AST Analog Devices Inc, AD7655AST Datasheet - Page 15

• Manufacturer Part Number: AD7655AST
• Description: IC ADC 16BIT 1MSPS QUAD 48-LQFP
• Manufacturer: Analog Devices Inc
• Series: PulSAR®r

Specifications of AD7655AST

• Rohs Status: RoHS non-compliant
• Number Of Bits: 16
• Sampling Rate (per Second): 1M
• Data Interface: Serial, Parallel
• Number Of Converters: 1
• Power Dissipation (max): 135mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• For Use With: EVAL-AD7655CBZ - BOARD EVALUATION FOR AD7655

ANALOG INPUT B2
ANALOG INPUT A1
ANALOG INPUT A2
ANALOG INPUT B1
2.5V REF
AD780
NOTE 1
ANALOG
SUPPLY
NOTE 4
NOTE 4
NOTE 4
NOTE 4
(5V)
100nF
1MΩ
NOTE 3
-
-
-
-
C
+
+
C
+
+
C
C
50Ω
U1
50Ω
U2
50Ω
U3
50Ω
U4
C
C
C
C
50kΩ
NOTES
1. SEE VOLTAGE REFERENCE INPUT SECTION.
2. WITH THE RECOMMENDED VOLTAGE REFERENCES, C
3. OPTIONAL CIRCUITRY FOR HARDWARE GAIN CALIBRATION.
4. THE AD8021 IS RECOMMENDED. SEE DRIVER AMPLIFIER CHOICE SECTION.
5. SEE ANALOG INPUTS SECTION.
6. OPTIONAL, SEE POWER SUPPLY SECTION.
7. OPTIONAL LOW JITTER CNVST. SEE CONVERSION CONTROL SECTION.
NOTE 5
NOTE 5
NOTE 5
NOTE 5
+
2.7nF
2.7nF
2.7nF
10Ω
2.7nF
10Ω
+
10Ω
10Ω
NOTE 2
C
REF
10μF
1μF
Figure 17. Typical Connection Diagram (Serial Interface)
100nF
REF
REF A
REF B
REFGND
INA1
INB1
INB2
INBN
INA2
INAN
AVDD
NOTE 1
NOTE 6
AGND
30Ω
Rev. B | Page 15 of 28
+
10μF
AD7655
DGND
100nF
REF
DVDD OVDD
DVDD
IS 47μF. SEE VOLTAGE REFERENCE INPUT SECTION.
BYTESWAP
SER/PAR
SDOUT
CNVST
RESET
OGND
SCLK
BUSY
A/B
CS
RD
PD
A0
100nF
NOTE 7
+
50Ω
10μF
DVDD
SERIAL PORT
D
DIGITAL SUPPLY
(3.3V OR 5V)
CLOCK
μC/μP/
DSP
AD7655