AD7298 Analog Devices, AD7298 Datasheet - Page 3

• Manufacturer Part Number: AD7298
• Description: 8-Channel, 1MSPS, 12-Bit SAR ADC with Temperature Sensor
• Manufacturer: Analog Devices

Specifications of AD7298

• Resolution (bits): 12bit
• # Chan: 8
• Sample Rate: 1MSPS
• Interface: SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref),Uni 1.0V,Uni 1.25,Uni 2.0V,Uni 2.5V
• Adc Architecture: SAR
• Pkg Type: CSP

SPECIFICATIONS
V
otherwise noted.
Table 1.
Parameter
DYNAMIC PERFORMANCE
SAMPLE AND HOLD
DC ACCURACY
ANALOG INPUT
REFERENCE INPUT/OUTPUT
DD
Offset Temperature Drift
Gain Temperature Drift
Signal-to-Noise Ratio (SNR)
Signal-to-Noise (and Distortion) Ratio (SINAD)
Total Harmonic Distortion (THD)
Spurious-Free Dynamic Range (SFDR)
Intermodulation Distortion (IMD)
Channel-to-Channel Isolation
Aperture Delay
Aperture Jitter
Full Power Bandwidth
Resolution
Integral Nonlinearity (INL)
Differential Nonlinearity (DNL)
Offset Error
Offset Error Matching
Gain Error
Gain Error Matching
Input Voltage Ranges
DC Leakage Current
Input Capacitance
Reference Output Voltage
Long-Term Stability
Output Voltage Hysteresis
Reference Input Voltage Range
DC Leakage Current
V
V
V
REF
REF
REF
= 2.8 V to 3.6 V; V
Second-Order Terms
Third-Order Terms
Output Impedance
Temperature Coefficient
Noise
1
1
3
3
1
DRIVE
1
= 1.65 V to 3.6 V; f
1
4
1
, 2
1
5
1
1
SAMPLE
Min
70
70
12
0
2.4925
1
= 1 MSPS, f
Rev. B | Page 3 of 24
Typ
72
71
−82
−84
−84
−93
−100
40
30
10
±0.5
±0.5
±2
±2.5
4
±1
±1
0.5
±0.01
32
8
2.5
150
50
±0.01
1
12
60
SCLK
= 20 MHz, V
Max
−77
−77.5
12
±1
±0.99
±4.5
±4.5
±4
±2.5
V
±1
2.5075
2.5
±1
35
REF
REF
= 2.5 V internal; T
Unit
dB
dB
dB
dB
dB
dB
dB
ns
ps
MHz
MHz
Bits
LSB
LSB
LSB
LSB
ppm/°C
LSB
LSB
ppm/°C
V
μA
pF
pF
V
ppm
ppm
V
μA
Ω
ppm/°C
μV rms
Test Conditions/Comments
f
f
f
@ 3 dB
@ 0.1 dB
Guaranteed no missed codes to 12 bits
When in track
When in hold mode
±0.3% maximum @ 25°C
For 1000 hours
External reference applied to Pin V
Bandwidth = 10 MHz
IN
A
IN
= 40.1 kHz, f
= 50 kHz sine wave
= 50 kHz, f
A
= −40°C to +125°C, unless
NOISE
B
= 41.5 kHz
= 60 kHz
AD7298
REF