AD7665ASTZ Analog Devices Inc, AD7665ASTZ Datasheet - Page 13

IC ADC 16BIT CMOS 5V 48-LQFP

AD7665ASTZ

Manufacturer Part Number
AD7665ASTZ
Description
IC ADC 16BIT CMOS 5V 48-LQFP
Manufacturer
Analog Devices Inc
Series
PulSAR®r
Datasheet

Specifications of AD7665ASTZ

Data Interface
Serial, Parallel
Number Of Bits
16
Sampling Rate (per Second)
570k
Number Of Converters
1
Power Dissipation (max)
74mW
Voltage Supply Source
Analog and Digital
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
48-LQFP
Resolution (bits)
16bit
Sampling Rate
570kSPS
Input Channel Type
Differential
Supply Voltage Range - Analog
4.75V To 5.25V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
EVAL-AD7665CBZ - BOARD EVALUATION FOR AD7665
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

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Price
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Description
Full-Scale Range
Least Significant Bit 305.2 µV
FSR – 1 LSB
Midscale + 1 LSB
Midscale
Midscale – 1 LSB
–FSR + 1 LSB
–FSR
NOTES
1
2
3
TYPICAL CONNECTION DIAGRAM
Figure 5 shows a typical connection diagram for the AD7665. Different circuitry shown on this diagram is optional and is discussed below.
REV.
Values with REF = 2.5 V; with REF = 3 V, all values will scale linearly.
This is also the code for an overrange analog input.
This is also the code for an underrange analog input.
C
ADR421
2.5V REF
NOTE 1
ANALOG
( 10V)
INPUT
ANALOG
NOTES
1. SEE VOLTAGE REFERENCE INPUT SECTION.
2. WITH THE RECOMMENDED VOLTAGE REFERENCES, C
3. OPTIONAL CIRCUITRY FOR HARDWARE GAIN CALIBRATION.
4. FOR BIPOLAR RANGE ONLY. SEE SCALER REFERENCE INPUT SECTION.
5. THE AD8021 IS RECOMMENDED. SEE DRIVER AMPLIFIER CHOICE SECTION.
6. WITH 0V TO 2.5V RANGE ONLY. SEE ANALOG INPUTS SECTION.
7. OPTION. SEE POWER SUPPLY SECTION.
8. OPTIONAL LOW JITTER CNVST. SEE CONVERSION CONTROL SECTION.
SUPPLY
1
NOTE 5
AD8021
(5V)
100nF
NOTE 3
1M
±10 V
9.999695 V
305.2 µV
0 V
–305.2 µV
–9.999695 V –4.999847 V –2.499924 V 152.6 µV
–10 V
AD8031
NOTE 4
+
+
U2
U1
50
50k
C
C
+
10 F
NOTE 6
2.7nF
15
Figure 5. Typical Connection Diagram (±10 V Range Shown)
+
+
10 F
±5 V
152.6 µV
4.999847 V
152.6 µV
0 V
–152.6 µV
–5 V
NOTE 2
100nF
C
REF
Table III. Output Codes and Ideal Input Voltages
100nF
IND
INGND
REF
REFGND
INA
INB
INC
AVDD
±2.5 V
76.3 µV
2.499924 V
76.3 µV
0 V
–76.3 µV
–2.5 V
NOTE 7
AGND
50
REF
Analog Input
+
IS 47 F. SEE VOLTAGE REFERENCE INPUT SECTION.
10 F
–13–
0 V to 10 V
152.6 µV
9.999847 V 4.999924 V 2.499962 V FFFF
5.000153 V 2.570076 V 1.257038 V 8001
5 V
4.999847 V 2.499924 V 1.249962 V 7FFF
0 V
AD7665
DGND
100nF
DVDD
DVDD
0 V to 5 V
76.3 µV
2.5 V
76.3 µV
0 V
OVDD
BYTESWAP
SER/PAR
IMPULSE
SDOUT
CNVST
OGND
RESET
OB/2C
WARP
BUSY
SCLK
RD
PD
CS
100nF
1.25 V
0 V to 2.5 V
38.15 µV
38.15 µV
0 V
+
50
NOTE 8
DVDD
10 F
Digital Output
Code (Hexa)
Straight Twos
Binary
8000
0001
0000
SERIAL
D
DIGITAL SUPPLY
(3.3V OR 5V)
PORT
CLOCK
3
2
AD7665
Complement
7FFF
0001
0000
FFFF
8001
8000
C/ P/DSP
3
2

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