AD7478A Analog Devices, AD7478A Datasheet - Page 7

• Manufacturer Part Number: AD7478A
• Description: 8-Bit, 1 MSPS, Low-Power A/D Converter in SC70 and MSOP Packages
• Manufacturer: Analog Devices

Specifications of AD7478A

• Resolution (bits): 8bit
• # Chan: 1
• Sample Rate: 1.2MSPS
• Interface: Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni Vdd
• Adc Architecture: SAR
• Pkg Type: SC70,SOP

Parameter
LOGIC INPUTS
LOGIC OUTPUTS
CONVERSION RATE
POWER REQUIREMENTS
1
2
3
4
5
6
Temperature range is from –40°C to +85°C.
Operational from V
See the Terminology section.
SC70 values guaranteed by characterization.
Guaranteed by characterization.
See the Power vs. Throughput Rate section.
Input High Voltage, V
Input Low Voltage, V
Input Current, I
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
I
Power Dissipation
DD
DD
Full Power-Down Mode (Dynamic)
Normal Mode (Static)
Normal Mode (Operational)
Full Power-Down Mode (Static)
Normal Mode (Operational)
Full Power-Down Mode
DD
IN
IN
, SCLK Pin
, CS Pin
= 2.0 V, with input high voltage (V
6
INL
IN
INH
5
OL
OH
3
5
INH
) 1.8 V minimum.
A Grade
2.4
1.8
0.8
0.4
±0.5
±10
5
V
0.4
±1
5
600
225
1.2
2.35/5.25
2.5
1.2
3.5
1.7
1
0.6
0.3
17.5
5.1
5
DD
– 0.2
Straight (Natural) Binary
Rev. F | Page 7 of 28
2
Unit
V min
V min
V max
V max
μA max
nA typ
pF max
V min
V max
μA max
pF max
ns max
ns max
MSPS max
V min/max
mA typ
mA typ
mA max
mA max
μA max
mA typ
mA typ
mW max
mW max
μW max
Test Conditions/Comments
V
V
V
Typically 10 nA, V
I
I
12 SCLK cycles with SCLK at 20 MHz
Digital I/Ps = 0 V or V
V
V
V
V
Typically 50 nA
V
V
V
V
V
SOURCE
SINK
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
AD7476A/AD7477A/AD7478A
= 2.35 V
= 5 V
= 3 V
= 4.75 V to 5.25 V, SCLK on or off
= 2.35 V to 3.6 V, SCLK on or off
= 4.75 V to 5.25 V
= 2.35 V to 3.6 V
= 5 V, f
= 3 V, f
= 5 V
= 3 V
= 5 V
= 200 μA
= 200 μA, V
SAMPLE
SAMPLE
= 100 kSPS
= 100 kSPS
IN
DD
= 0 V or V
= 2.35 V to 5.25 V
DD
DD