AD7994 Analog Devices, AD7994 Datasheet - Page 5

• Manufacturer Part Number: AD7994
• Description: 4 Channel, 12-Bit ADC with I2C Compatible Interface in 16-Lead TSSOP
• Manufacturer: Analog Devices

Specifications of AD7994

• Resolution (bits): 12bit
• # Chan: 4
• Sample Rate: 188kSPS
• Interface: I²C/Ser 2-Wire,Ser
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref)
• Adc Architecture: SAR
• Pkg Type: SOP

AD7994 SPECIFICATIONS
Temperature range for B version is −40°C to +125°C. Unless otherwise noted, V
all specifications apply for f
T
Table 2.
Parameter
DYNAMIC PERFORMANCE
DC ACCURACY
ANALOG INPUT
REFERENCE INPUT
LOGIC INPUTS (SDA, SCL)
A
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
Input Voltage Range
DC Leakage Current
Input Capacitance
REF
DC Leakage Current
Input Impedance
Input High Voltage, V
Input Low Voltage, V
Input Leakage Current, I
Input Capacitance, C
Input Hysteresis, V
= T
Second-Order Terms
Third-Order Terms
IN
MIN
Input Voltage Range
to T
2
2
MAX.
2
2
2
2
HYST
IN
1, 2
INL
INH
2
3
1
1, 2
IN
SCL
2
up to 400 kHz. For the AD7994-1, all specs apply for f
2
2
2
2
2
B Version
70.5
71
–78
–79
–90
–90
10
50
-90
11
2
12
±1
±0.2
+1/–0.9
±0.2
±4
±6
±1
±2
±1
0 to REF
± 1
30
1.2 to V
± 1
69
0.7 (V
0.3 (V
± 1
10
0.1 (V
Rev. 0 | Page 5 of 32
DD
DD
DD
DD
)
)
)
IN
Unit
dB min
dB min
dB max
dB max
dB typ
dB typ
ns max
ps typ
dB typ
MHz typ
MHz typ
Bits
LSB max
LSB typ
LSB max
LSB typ
LSB max
LSB max
LSB max
LSB max
LSB max
V
µA max
pF typ
V min/V max
µA max
kΩ typ
V min
V max
µA max
pF max
V min
DD
= 2.7 V to 5.5 V; REF
SCL
up to 3.4 MHz, unless otherwise noted.
Test Conditions/Comments
F
F
fa = 10.1 kHz, fb = 9.9 kHz for f
fa = 1.1 kHz, fb = 0.9 kHz for f
F
@ 3 dB
@ 0.1 dB
Guaranteed no missed codes to 12 bits
Mode 1 (CONVST Mode)
Mode 2 (Command Mode)
During a converison
V
IN
IN
IN
IN
3.4 MHz
to 3.4 MHz
= 10 kHz sine wave for f
= 1 kHz sine wave for f
= 108 Hz, see the Terminology section
= 0 V or V
DD
IN
= 2.5 V. For the AD7994-0,
AD7993/AD7994
SCL
SCL
up to 400 kHz
SCL
from 1.7 MHz to
SCL
up to 400 kHz
from 1.7 MHz