AD7626BCPZ Analog Devices Inc, AD7626BCPZ Datasheet - Page 20

IC ADC 16BIT 10MSPS DIFF 32LFCSP

AD7626BCPZ

Manufacturer Part Number
AD7626BCPZ
Description
IC ADC 16BIT 10MSPS DIFF 32LFCSP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD7626BCPZ

Data Interface
Serial
Design Resources
Single-Ended-to-Differential High Speed Drive Circuit for 16-Bit, 10 MSPS AD7626 ADC (CN0105)
Number Of Bits
16
Sampling Rate (per Second)
10M
Number Of Converters
1
Power Dissipation (max)
170mW
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
32-VFQFN, CSP Exposed Pad
Resolution (bits)
16bit
Sampling Rate
10MSPS
Input Channel Type
Differential
Supply Current
23.5mA
Digital Ic Case Style
CSP
No. Of Pins
32
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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AD7626
VOLTAGE REFERENCE OPTIONS
The AD7626 allows flexible options for creating and buffering
the reference voltage. The AD7626 conversions refer to 4.096 V
only. The various options creating this 4.096 V reference are
controlled by the EN1 and EN0 pins (see Table 8).
CONNECT 1.2V EXTERNAL REFERENCE TO REFIN PIN.
1.2V REFIN INPUT IS BUFFERED INTERNALLY.
IT CREATES A 4.096V REFERENCE FOR THE ADC.
DECOUPLE THE REF AND REFIN PINS EXTERNALLY
VIN
10µF
(6.1V ≤ V
0.1µF
IN
≥ 18V)
V
IN
ADR434/
ADR444
Figure 35. Powered Up, Internal Reference and Internal Reference Buffer
POWER-UP—INTERNAL REFERENCE AND REFERENCE BUFFER IN USE.
GND
Figure 36. External 1.2 V Reference Using Internal Reference Buffer
A
EXTERNAL 1.2V REFERENCE CONNECTED TO REFIN PIN IS REQUIRED.
V
B
OUT
Figure 37. External 4.096 V Reference Applied to REF Pin
NO EXTERNAL REFERENCE CIRCUITRY REQUIRED.
4.096V
EXTERNAL 4.096V REFERENCE CONNECTED TO REF PIN IS REQUIRED.
C
0.1µF
REFIN PINS EXTERNALLY.
DECOUPLE THE REF AND
EN1 = 1 AND EN0 = 1
IN+
IN–
V+
10µF
Rev. A | Page 20 of 2
AD8031
EN1 = 0 AND EN0 = 1
IN+
IN–
REF
AD7626
10µF
REF
AD7626
REFIN
EN1 = 1 AND EN0 = 0
IN+
IN–
10µF
10µF
REFIN
Table 8. Voltage Reference Options
Option
A
B
C
REF
10µF
AD7626
CONNECT BUFFERED 4.096V SIGNAL TO REF PIN.
DECOUPLE THE REF PIN EXTERNALLY.
REFIN IS A NO CONNECT.
REFIN
0.1µF
NO CONNECT
EN1
1
0
1
0
1.2V
V
EN0
1
1
0
0
OUT
ADR280
V–
Reference Mode
Power-up
Internal reference and internal
reference buffer in use
External 1.2 V reference applied to
REFIN pin required
External 4.096 V reference applied to
REF pin required.
Power-down mode
V+
(2.4V ≤ V+ ≥ 5.5V)
0.1µF
V+

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