AD7922 Analog Devices, AD7922 Datasheet - Page 5

• Manufacturer Part Number: AD7922
• Description: 2-Channel, 2.35 V to 5.25 V, 1 MSPS, 12-Bit A/D Converter
• Manufacturer: Analog Devices

Specifications of AD7922

• Resolution (bits): 12bit
• # Chan: 2
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni Vdd
• Adc Architecture: SAR
• Pkg Type: SOP,SOT

AD7922 SPECIFICATIONS
Temperature range for A Grade from −40°C to +85°C.
V
Table 2.
Parameter
DYNAMIC PERFORMANCE
DC ACCURACY
ANALOG INPUT
LOGIC INPUTS
DD
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
Differential Nonlinearity
Offset Error
Offset Error Match
Gain Error
Gain Error Match
Total Unadjusted Error (TUE)
Input Voltage Ranges
DC Leakage Current
Input Capacitance
Input High Voltage, V
Input Low Voltage, V
Input Current, I
Input Current, I
Input Current, I
Input Capacitance, C
= 2.35 V to 5.25 V, f
Second-Order Terms
Third-Order Terms
2
2
IN
IN
IN
, SCLK Pin
, CS Pin
, DIN Pin
2, 3
2, 3
2
IN
INL
INH
SCLK
3
2
= 18 MHz, f
2
2
2
2
2
2
SAMPLE
2
= 1 MSPS; T
A Grade
70
72
71
72.5
−81
−84
−84
−86
10
30
90
1.5
12
±1.5
±0.7
−0.9/+1.5
−0.7/+1.2
±1
±0.1
±0.5
±0.02
±2
±0.5
±1
±0.2
±1.5
±0.5
±0.3
0.7 (V
2
0.3
0.2 (V
0.8
±0.3
±0.3
±0.3
5
8.5
0 to V
20
DD
DD
DD
)
)
A
1
= T
Rev. 0 | Page 5 of 32
MIN
to T
MAX
, unless otherwise noted.
Unit
dB min
dB typ
dB min
dB typ
dB typ
dB typ
dB typ
dB typ
ns typ
ps typ
dB typ
MHz typ
MHz typ
Bits
LSB max
LSB typ
LSB max
LSB typ
LSB max
LSB typ
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
V max
µA max
µA max
µA max
pF max
Test Conditions/Comments
f
fa = 100.73 kHz, fb = 90.72 kHz
fa = 100.73 kHz, fb = 90.72 kHz
@ 3 dB
@ 0.1dB
V
V
Guaranteed no missed codes to 12 bits
V
V
V
V
V
V
V
V
V
V
V
V
2.35 V ≤ V
2.7 V < V
V
2.35 V < V
2.7 V < V
Typically 8 nA, V
IN
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
= 100 kHz sine wave
= 2.35 V to 3.6V
= 4.75 V to 5.25V
= 2.35 V to 3.6V
= 4.75 V to 5.25V
= 2.35 V to 3.6V
= 4.75 V to 5.25V
= 2.35 V to 3.6V
= 4.75 V to 5.25V
= 2.35 V to 3.6V
= 4.75 V to 5.25V
= 2.35 V to 3.6V
= 4.75 V to 5.25V
= 2.35 V to 3.6V
= 4.75 V to 5.25V
= 2.35 V
DD
DD
DD
DD
≤ 5.25 V
≤ 5.25 V
≤ 2.7 V
≤ 2.7 V
IN
= 0 V or V
AD7912/AD7922
DD