AD7904 Analog Devices, AD7904 Datasheet - Page 7

• Manufacturer Part Number: AD7904
• Description: 4-Channel, 1 MSPS, 8-Bit A/D Converter with Sequencer in 16-Lead TSSOP
• Manufacturer: Analog Devices

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

AD7924 SPECIFICATIONS
AV
Table 3.
Parameter
DYNAMIC PERFORMANCE
DC ACCURACY
ANALOG INPUT
REFERENCE INPUT
LOGIC INPUTS
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
Channel-to-Channel Isolation
Full Power Bandwidth
Resolution
Integral Nonlinearity (INL)
Differential Nonlinearity (DNL)
0 V to REF
0 V to 2 × REF
Input Voltage Range
DC Leakage Current
Input Capacitance
REF
DC Leakage Current
REF
Input High Voltage, V
Input Low Voltage, V
Input Current, I
Input Capacitance, C
DD
Second-Order Terms
Third-Order Terms
Offset Error
Offset Error Match
Gain Error
Gain Error Match
Positive Gain Error
Positive Gain Error Match
Zero Code Error
Zero Code Error Match
Negative Gain Error
Negative Gain Error Match
= V
IN
IN
Input Voltage
Input Impedance
DRIVE
IN
Input Range
= 2.7 V to 5.25 V, REF
2
IN
2
IN
Input Range
2
2
INL
2
2
IN
INH
2
3
2
2
2
2
2
2
2
IN
= 2.5 V, f
2
SCLK
= 20 MHz, T
B Version
70
69.5
69
70
69.5
−77
−73
−78
−90
−90
10
50
−85
8.2
1.6
12
±1
−0.9/+1.5
±8
±0.5
±1.5
±0.5
±1.5
±0.5
±8
±0.5
±1
±0.5
0 to REF
0 to 2 × REF
±1
20
2.5
±1
36
0.7 × V
0.3 × V
±1
10
DRIVE
DRIVE
Rev. B | Page 7 of 32
IN
1
A
IN
= T
MIN
Unit
dB min
dB min
dB min
dB min
dB min
dB max
dB max
dB max
dB typ
dB typ
ns typ
ps typ
dB typ
MHz typ
MHz typ
Bits
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
V
V
μA max
pF typ
V
μA max
kΩ typ
V min
V max
μA max
pF max
to T
MAX
, unless otherwise noted.
Test Conditions/Comments
f
@ 5 V, B models
@ 5 V, W models
@ 3 V, typically 69.5 dB
B models
W models
@ 5 V, typically −84 dB
@ 3 V, typically −77 dB
@ 5 V, typically −86 dB
fa = 40.1 kHz, fb = 41.5 kHz
f
@ 3 dB
@ 0.1 dB
Guaranteed no missed codes to 12 bits
Straight binary output coding
Typically ±0.5 LSB
−REF
complement output coding
Typically ±0.8 LSB
RANGE bit set to 1
RANGE bit set to 0, AV
±1% specified performance
f
Typically 10 nA, V
IN
IN
SAMPLE
= 50 kHz sine wave, f
= 400 kHz
IN
= 1 MSPS
to +REF
AD7904/AD7914/AD7924
IN
biased about REF
IN
= 0 V or V
DD
SCLK
/V
DRIVE
= 20 MHz
DRIVE
= 4.75 V to 5.25 V
IN
with twos