AD7478 Analog Devices, AD7478 Datasheet - Page 3

• Manufacturer Part Number: AD7478
• Description: 8-Bit, 1 MSPS, Low Power Successive Approximation ADC Which Operates From A Single 2.35 V to 5.25 V Power Supply
• Manufacturer: Analog Devices

Specifications of AD7478

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

SPECIFICATIONS
AD7476 SPECIFICATIONS
A version: V
f
Table 1.
Parameter
DYNAMIC PERFORMANCE
DC ACCURACY
ANALOG INPUT
LOGIC INPUT
LOGIC OUTPUT
SCLK
Signal-to-(Noise + Distortion) (SINAD)
Signal-to-Noise Ratio (SNR)
Total Harmonic Distortion (THD)
Peak Harmonic or Spurious Noise (SFDR)
Intermodulation Distortion (IMD)
Aperture Delay
Aperture Jitter
Full Power Bandwidth
Resolution
Integral Nonlinearity
Differential Nonlinearity
Offset Error
Gain Error
Input Voltage Ranges
DC Leakage Current
Input Capacitance
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
= 12 MHz, f
Second-Order Terms
Third-Order Terms
3
DD
3
= 2.7 V to 5.25 V, f
SAMPLE
IN
IN
, SCLK Pin
, CS Pin
= 600 kSPS, unless otherwise noted; T
INL
IN
3
INH
5
OL
OH
3
3
SCLK
3
3
5
= 20 MHz, f
3
3
A Version
69
70
70
−80
−82
−78
−78
10
30
6.5
12
±1
±0.75
±0.5
±0.5
0 to V
±1
30
2.4
1.8
0.4
0.8
±1
±1
10
V
0.4
±10
10
DD
− 0.2
DD
SAMPLE
Straight (Natural) Binary
1,2
= 1 MSPS, unless otherwise noted; S and B versions: V
B Version
70
71.5
71
72.5
−78
−80
−78
10
30
±1.5
−0.9/+1.5
±0.75
±1.5
±1.5
0 to V
±1
30
2.4
1.8
0.4
0.8
±1
10
V
0.4
±10
10
−78
6.5
12
±0.6
±1
DD
A
Rev. F | Page 3 of 24
− 0.2
= T
DD
MIN
1,2
to T
MAX
S Version
69
70
70
−78
−80
−78
−78
10
30
6.5
12
±1.5
±0.6
−0.9/+1.5
±0.75
±2
±2
0 to V
±1
30
2.4
1.8
0.4
0.8
±1
±1
10
V
0.4
±10
10
DD
, unless otherwise noted.
− 0.2
DD
1,2
Unit
dB min
dB min
dB typ
dB min
dB typ
dB typ
dB typ
dB typ
dB typ
ns typ
ps typ
MHz typ
Bits
LSB max
LSB typ
LSB max
LSB typ
LSB max
LSB typ
LSB max
LSB typ
V
μA max
pF typ
V min
V min
V max
V max
μA max
μA typ
pF max
V min
V max
μA max
pF max
AD7476/AD7477/AD7478
Test Conditions/Comments
f
B version, V
T
B version, V
fa = 103.5 kHz, fb = 113.5 kHz
fa = 103.5 kHz, fb = 113.5 kHz
@ 3 dB
S, B versions, V
Guaranteed no missed codes to 12 bits
V
V
V
Typically 10 nA, V
I
I
SOURCE
SINK
IN
A
DD
DD
DD
A version, V
= 100 kHz sine wave
= 25°C
= 2.35 V
= 3 V
= 5 V
= 200 μA
= 200 μA; V
DD
= 2.35 V to 5.25 V,
DD
DD
DD
= 2.4 V to 5.25 V
= 2.4 V to 5.25 V
DD
= (2.7 V to 3.6 V)
= (2.35 V to 3.6 V)
IN
DD
= 0 V or V
= 2.35 V to 5.25 V
DD
4
;