AD7927 Analog Devices, AD7927 Datasheet - Page 4

• Manufacturer Part Number: AD7927
• Description: 8-Channel, 200 kSPS, 12-Bit ADC with Sequencer in 20-Lead TSSOP
• Manufacturer: Analog Devices

Specifications of AD7927

• Resolution (bits): 12bit
• # Chan: 8
• 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

AD7927
Parameter
LOGIC OUTPUTS
CONVERSION RATE
POWER REQUIREMENTS
1
2
3
4
Temperature ranges as follows: B Version: −40°C to +85°C; W 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
Straight (Natural) Binary
Twos Complement
4
During Conversion
Normal Mode (Static)
Normal Mode (Operational) f
Using Auto Shutdown Mode f
Auto Shutdown (Static)
Full Shutdown Mode
Normal Mode (Operational)
Auto Shutdown (Static)
Full Shutdown Mode
DD
4
OL
OH
SAMPLE
SAMPLE
3
= 200 kSPS
= 200 kSPS
B Version
V
0.4
±1
10
800
300
300
200
2.7/5.25
2.7/5.25
2.7
2
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
Rev. C | Page 4 of 28
1
Unit
V max
pF max
ns max
ns max
kSPS max
V min/max
V min/max
mA max
mA max
mA max
mA max
μA typ
μA typ
mW max
mW max
μW max
μW max
μW max
μW max
V min
μA max
ns max
μA typ
μA max
μA max
Test Conditions/Comments
I
I
Coding bit set to 1
Coding bit set to 0
16 SCLK cycles with SCLK at 20 MHz
Sine wave input
Full-scale step input
See Serial Interface section
Digital inputs = 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
= 2.7 V to 5.25 V
SCLK
SCLK
SCLK
DRIVE
SCLK
SCLK
SCLK
= 20 MHz
= 20 MHz
= 20 MHz
= 20 MHz
= 20 MHz
= 20 MHz
Data Sheet