AD7904 Analog Devices, AD7904 Datasheet - Page 4
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AD7904
Manufacturer Part Number
AD7904
Description
4-Channel, 1 MSPS, 8-Bit A/D Converter with Sequencer in 16-Lead TSSOP
Manufacturer
Analog Devices
Datasheet
1.AD7904.pdf
(32 pages)
Specifications of AD7904
Resolution (bits)
8bit
# Chan
4
Sample Rate
1MSPS
Interface
Ser,SPI
Analog Input Type
SE-Uni
Ain Range
Uni (Vref),Uni (Vref) x 2
Adc Architecture
SAR
Pkg Type
SOP
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AD7904/AD7914/AD7924
Parameter
LOGIC OUTPUTS
CONVERSION RATE
POWER REQUIREMENTS
1
2
3
4
Temperature range for B versions: −40°C to +85°C.
See the Terminology section.
Sample tested @ 25°C to ensure compliance.
See the 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
V
V
I
Power Dissipation
DD
DD
DRIVE
Normal Mode (Static)
Normal Mode (Operational)
Auto Shutdown Mode
Full Shutdown Mode
Normal Mode (Operational)
Auto Shutdown Mode (Static)
Full Shutdown Mode
4
4
OL
OH
2
3
B Version
V
0.4
±1
10
800
300
300
1
2.7/5.25
2.7/5.25
600
2.7
2
960
0.5
0.5
13.5
6
2.5
1.5
2.5
1.5
DRIVE
Straight (natural) binary
− 0.2
Twos complement
1
Rev. B | Page 4 of 32
Unit
V min
V max
μA max
pF max
ns max
ns max
ns max
MSPS max
V min/V max
V min/V max
μA typ
mA max
mA max
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 1
CODING bit set to 0
16 SCLK cycles with SCLK at 20 MHz
Sine wave input
Full-scale step input
See the Serial Interface section
Digital inputs = 0 V or V
AV
AV
AV
f
Static
SCLK on or off (20 nA typ)
AV
AV
AV
AV
AV
AV
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, 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
= 250 kSPS
SCLK
SCLK
= 20 MHz
= 20 MHz
DD
= 2.7 V to 5.25 V
SCLK
DRIVE
SCLK
= 20 MHz
= 20 MHz