AD7490 Analog Devices, AD7490 Datasheet - Page 3

• Manufacturer Part Number: AD7490
• Description: 16-Channel, 1MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP
• Manufacturer: Analog Devices

Specifications of AD7490

• Resolution (bits): 12bit
• # Chan: 16
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref),Uni (Vref) x 2
• Adc Architecture: SAR
• Pkg Type: CSP,SOP

SPECIFICATIONS
V
−40°C to +85°C.
Table 1.
Parameter
DYNAMIC PERFORMANCE
DC ACCURACY
ANALOG INPUT
REFERENCE INPUT
DD
Signal-to-(Noise + Distortion) (SINAD)
Signal-to-Noise Ratio (SNR)
Total Harmonic Distortion (THD)
Peak Harmonic or Spurious Noise (SFDR)
Intermodulation Distortion (IMD)
Second-Order Terms
Third-Order Terms
Aperture Delay
Aperture Jitter
Channel-to-Channel Isolation
Full Power Bandwidth
Resolution
Integral Nonlinearity
Differential Nonlinearity
0 V to REF
0 V to 2 × REF
Input Voltage Range
DC Leakage Current
Input Capacitance
REF
DC Leakage Current
REF
= V
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
IN
IN
Input Voltage
Input Impedance
DRIVE
IN
= 2.7 V to 5.25 V, REF
Input Range
2
IN
Input Range
2
2
2
2
IN
= 2.5 V, f
2
2
Test Conditions/Comments
f
V
V
V
V
V
V
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
−REF
with twos complement output coding
offset
RANGE bit set to 1
RANGE bit set to 0, V
for 0 V to 2 × REF
±1% specified performance
f
IN
IN
SAMPLE
SCLK
DD
DD
DD
DD
DD
DD
= 50 kHz sine wave, f
= 400 kHz
= 5 V
= 3 V
= 5 V
= 3 V
= 5 V
= 3 V
1
IN
= 20 MHz, T
= 1 MSPS
to +REF
IN
Rev. C | Page 3 of 28
biased about REF
IN
A
DD
= T
= 4.75 V to 5.25 V
SCLK
MIN
= 20 MHz
to T
MAX
IN
, unless otherwise noted. Temperature range (B Version):
Min
69
68
69.5
12
0
0
Typ
69.5
−84
−85
−85
10
50
−82
1.6
±0.6
±0.6
20
36
70.5
−77
−86
−80
8.2
2.5
Max
−74
−0.95/+1.5
±8
±0.5
±2
±0.6
±2
±0.5
±8
±0.5
±1
±0.5
2 × REF
±1
±1
−71
−75
−73
±1
REF
IN
IN
AD7490
Unit
dB
dB
dB
dB
dB
dB
dB
dB
dB
ns
ps
dB
MHz
MHz
Bits
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
V
V
μA
pF
V
μA
kΩ