AD7923 Analog Devices, AD7923 Datasheet - Page 4

• Manufacturer Part Number: AD7923
• Description: 4-Channel 200 kSPS, 12-Bit A/D Converter with Sequencer in 16-Lead TSSOP
• Manufacturer: Analog Devices

Specifications of AD7923

• Resolution (bits): 12bit
• # Chan: 4
• Sample Rate: 200kSPS
• Interface: Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref),Uni (Vref) x 2
• Adc Architecture: SAR
• Pkg Type: SOP

AD7923
Parameter
LOGIC OUTPUTS
CONVERSION RATE
POWER REQUIREMENTS
1
2
3
4
Temperature range: B Version: −40°C to +125°C.
See Terminology section.
Sample tested @ 25°C to ensure compliance.
See Power vs. Throughput Rate section.
Output High Voltage, V
Output Low Voltage, V
Floating-State Leakage Current
Floating-State Output Capacitance
Output Coding
Conversion Time
Track-and-Hold Acquisition Time
Throughput Rate
AV
V
I
Power Dissipation
DD
DRIVE
During Conversion
Normal Mode (Static)
Normal Mode (Operational) f
Using Auto Shutdown Mode f
Auto Shutdown (Static)
Full Shutdown Mode
Normal Mode (Operational) f
Auto Shutdown (Static)
Full Shutdown Mode
4
DD
4
OL
OH
SAMPLE
SAMPLE
SAMPLE
3
= 200 kSPS
= 200 kSPS
= 200 kSPS
B Version
V
0.4
±1
10
Twos Complement
Straight (Natural)
Binary
800
300
300
200
2.7/5.25
2.7/5.25
2.7
2.0
600
1.5
1.2
900
650
0.5
0.5
7.5
3.6
2.5
1.5
2.5
1.5
DRIVE
– 0.2
1
Rev. C | Page 4 of 24
Unit
V min
V max
μA max
pF max
ns max
ns max
ns max
kSPS max
V min/max
V min/max
mA max
mA max
μA typ
mA max
mA max
μA typ
μA typ
μA max
μA max
mW max
mW max
μW max
μW max
μW max
μW max
Test Conditions/Comments
I
I
Coding bit set to 0
Coding bit set to 1
16 SCLK cycles with SCLK at 20 MHz
Sinewave input
Full-scale step Input
See Serial Interface section
Digital I/Ps = 0 V or V
AV
AV
AV
AV
AV
AV
AV
SCLK on or off (20 nA typ)
SCLK on or off (20 nA typ)
AV
AV
AV
AV
AV
AV
SOURCE
SINK
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
= 200 μA
= 4.75 V to 5.25 V, f
= 2.7 V to 3.6 V, f
= 2.7 V to 5.25 V, SCLK on or off
= 4.75 V to 5.25 V, f
= 2.7 V to 3.6 V, f
= 4.75 V to 5.25 V, f
= 2.7 V to 3.6 V, f
= 5 V, f
= 3 V, f
= 5 V
= 3 V
= 5 V
= 3 V
= 200 μA, AV
SCLK
SCLK
= 20 MHz
= 20 MHz
DD
DRIVE
= 2.7 V to 5.25 V
SCLK
SCLK
SAMPLE
SCLK
SCLK
SAMPLE
= 20 MHz
= 20 MHz
= 200 kSPS
= 20 MHz
= 20 MHz
= 200 kSPS