AD7478A Analog Devices, AD7478A Datasheet - Page 4

• 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

AD7476A/AD7477A/AD7478A
Parameter
LOGIC OUTPUTS
CONVERSION RATE
POWER REQUIREMENTS
1
2
3
4
5
6
7
Temperature ranges are as follows: A, B grades from –40°C to +85°C, Y grade from –40°C to +125°C.
Operational from V
See the Terminology section.
B and Y grades, maximum specifications apply as typical figures when V
SC70 values guaranteed by characterization.
Guaranteed by characterization.
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
I
Power Dissipation
DD
DD
Normal Mode (Static)
Normal Mode (Operational)
Full Power-Down Mode (Static)
Full Power-Down Mode (Dynamic)
Normal Mode (Operational)
Full Power-Down Mode
DD
= 2.0 V, with input low voltage (V
7
OL
OH
3
6
A Grade
V
0.4
±1
5
800
250
1
2.35/5.25
2.5
1.2
3.5
1.7
1
0.6
0.3
17.5
5.1
5
3
DD
INL
) 0.35 V maximum.
– 0.2
Straight (Natural) Binary
2
B Grade
V
0.4
±1
5
800
250
1
2.35/5.25
2.5
1.2
3.5
1.7
1
0.6
0.3
17.5
5.1
5
3
DD
DD
– 0.2
Rev. F | Page 4 of 28
= 4.75 V to 5.25 V.
2
Y Grade
V
0.4
±1
5
800
250
1
2.35/5.25
2.5
1.2
3.5
1.7
1
0.6
0.3
17.5
5.1
5
3
DD
– 0.2
2
Unit
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
μW max
Test Conditions/Comments
I
I
16 SCLK cycles
See Serial Interface section
Digital I/Ps = 0 V or V
V
V
V
V
Typically 50 nA
V
V
V
V
V
V
SOURCE
SINK
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
= 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, f
= 2.35 V to 3.6 V, f
= 5 V, f
= 3 V, f
= 5 V, f
= 3 V, f
= 5 V
= 3 V
= 200 μA
= 200 μA; V
SAMPLE
SAMPLE
SAMPLE
SAMPLE
= 100 kSPS
= 100 kSPS
= 1 MSPS
= 1 MSPS
DD
= 2.35 V to 5.25 V
DD
SAMPLE
SAMPLE
= 1 MSPS
= 1 MSPS