AD7938-6 Analog Devices, AD7938-6 Datasheet - Page 4

• Manufacturer Part Number: AD7938-6
• Description: 8-Channel, 625 kSPS, 12-Bit Parallel ADCs with a Sequencer
• Manufacturer: Analog Devices

Specifications of AD7938-6

• Resolution (bits): 12bit
• # Chan: 8
• Sample Rate: 625kSPS
• Interface: Par
• Analog Input Type: Diff-Uni,SE-Uni
• Ain Range: Uni (Vref),Uni (Vref) x 2
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

AD7938-6
Parameter
REFERENCE INPUT/OUTPUT
LOGIC INPUTS
LOGIC OUTPUTS
CONVERSION RATE
POWER REQUIREMENTS
1
2
3
4
5
6
Temperature range is −40°C to +85°C.
See the Terminology section.
For full common-mode range, see Figure 25 and Figure 26.
Sample tested during initial release to ensure compliance.
This device is operational with an external reference in the range of 0.1 V to V
Measured with a midscale dc analog input.
DC Leakage Current
Input Capacitance
V
DC Leakage Current
V
V
V
V
V
Input High Voltage, V
Input Low Voltage, V
Input Current, I
Input Capacitance, C
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
V
V
I
Power Dissipation
DD
REF
REFOUT
REFOUT
REF
REF
REF
DD
DRIVE
6
Normal Mode (Static)
Normal Mode (Operational)
Autostandby Mode
Full/Autoshutdown Mode (Static)
Normal Mode (Operational)
Autostandby Mode (Static)
Full/Autoshutdown Mode (Static)
Input Voltage
Noise
Output Impedance
Input Capacitance
Output Voltage
Temperature Coefficient
IN
5
4
IN
INL
INH
4
OL
OH
4
Value
±1
45
10
2.5
±1
2.5
25
5
10
130
10
15
25
2.4
0.8
±5
10
2.4
0.4
±3
10
Straight (Natural) Binary
Twos Complement
t
125
80
625
2.7/5.25
2.7/5.25
0.8
1.5
1.2
0.3
160
2
7.5
3.6
800
480
10
6
2
+ 13 t
1
CLKIN
Rev. C | Page 4 of 32
DD
. See the Reference section for more information.
Unit
μA max
pF typ
pF typ
V
μA max
V
ppm/°C max
ppm/°C typ
μV typ
μV typ
Ω typ
pF typ
pF typ
V min
V max
μA max
pF max
V min
V max
μA max
pF max
ns
ns max
ns typ
kSPS max
V min/max
V min/max
mA typ
mA max
mA max
mA typ
μA typ
μA max
mW max
mW max
μW typ
μW typ
μW max
μW max
Test Conditions/Comments
When in track
When in hold
±1% for specified performance
±0.2% max @ 25°C
0.1 Hz to 10 Hz bandwidth
0.1 Hz to 1 MHz bandwidth
When in track
When in hold
Typically 10 nA, V
CODING bit = 0
CODING bit = 1
Sine wave input
Digital inputs = 0 V or V
Static
SCLK on or off
V
V
I
I
Full-scale step input
V
V
V
f
V
V
V
V
SOURCE
SINK
SAMPLE
DD
DD
DD
DD
DD
DD
DD
DD
DD
= 200 μA
= 2.7 V to 5.25 V, SCLK on or off
= 4.75 V to 5.25 V
= 2.7 V to 3.6 V
= 5 V
= 3 V
= 5 V
= 3 V
= 5 V
= 3 V
= 200 μA
= 100 kSPS, V
IN
= 0 V or V
DD
= 5 V
DRIVE
DRIVE
Data Sheet