AD7927 Analog Devices, AD7927 Datasheet - Page 3

• Manufacturer Part Number: AD7927
• Description: 8-Channel, 200 kSPS, 12-Bit ADC with Sequencer in 20-Lead TSSOP
• Manufacturer: Analog Devices

Specifications of AD7927

• Resolution (bits): 12bit
• # Chan: 8
• Sample Rate: 200kSPS
• Interface: Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref),Uni (Vref) x 2
• Adc Architecture: SAR
• Pkg Type: SOP

Data Sheet
SPECIFICATIONS
AV
Table 1.
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
Intermodulation Distortion (IMD)
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 Ranges
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
(SFDR)
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
2
IN
Input Range
2
= 2.7 V to 5.25 V, REF
IN
IN
Input Range
INL
IN
INH
3
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
−76
−90
−90
10
50
−82
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. C | Page 3 of 28
IN
1
A
IN
= T
MIN
Unit
dB min
dB min
dB min
dB min
dB min
dB max
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 70 dB
B models
W models
@ 5 V Typically −84 dB
@ 3 V Typically −77 dB
@ 5 V Typically −86 dB
@ 3 V Typically −80 dB
f
f
@ 3 dB
@ 0.1 dB
Guaranteed no missed codes to 12 bits
Straight binary output coding
Typically ±0.5 LSB
−REF
Twos complement output coding
Typically ±0.8 LSB
RANGE bit set to 1
RANGE bit set to 0, AV
f
±1% specified performance
Typically 10 nA, V
IN
A
IN
SAMPLE
= 40.1 kHz, f
= 50 kHz sine wave, f
= 400 kHz
IN
= 200 kSPS
to +REF
B
IN
= 41.5 kHz
biased about REF
IN
= 0 V or V
DD
SCLK
/V
DRIVE
= 20 MHz
DRIVE
= 4.75 V to 5.25 V
IN
with
AD7927