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參數資料
| 型號： | AD7928 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 8-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 20-Lead TSSOP |
| 中文描述： | 8通道，1 MSPS的，8-/10-/12-Bit與序列ADC的20引腳TSSOP封裝 |
| 文件頁數： | 2/24頁 |
| 文件大小： | 607K |
| 代理商： | AD7928 |
AD7908/AD7918/AD7928
AD7908
–
SPECIFICATIONS
REV. A
Parameter
B Version
1
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
Signal-to-(Noise + Distortion) (SINAD)
2
Signal-to-Noise Ratio (SNR)
2
Total Harmonic Distortion (THD)
2
Peak Harmonic or Spurious Noise
(SFDR)
2
Intermodulation Distortion (IMD)
2
Second Order Terms
Third Order Terms
Aperture Delay
Aperture Jitter
Channel-to-Channel Isolation
2
Full Power Bandwidth
f
IN
= 50 kHz Sine Wave, f
SCLK
= 20 MHz
49
49
–
66
dB min
dB min
dB max
–
64
dB max
fa = 40.1 kHz, fb = 41.5 kHz
–
90
–
90
10
50
–
85
8.2
1.6
dB typ
dB typ
ns typ
ps typ
dB typ
MHz typ
MHz typ
f
IN
= 400 kHz
@ 3 dB
@ 0.1 dB
DC ACCURACY
2
Resolution
Integral Nonlinearity
Differential Nonlinearity
0 V to REF
IN
Input Range
Offset Error
Offset Error Match
Gain Error
Gain Error Match
0 V to 2 REF
IN
Input Range
Positive Gain Error
Positive Gain Error Match
Zero Code Error
Zero Code Error Match
Negative Gain Error
Negative Gain Error Match
8
±0.2
±0.2
Bits
LSB max
LSB max
Guaranteed No Missed Codes to 8 Bits
Straight Binary Output Coding
±0.5
±0.05
±0.2
±0.05
LSB max
LSB max
LSB max
LSB max
–
REF
IN
to +REF
IN
Biased about REF
IN
with
Twos Complement Output Coding
±0.2
±0.05
±0.5
±0.1
±0.2
±0.05
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
ANALOG INPUT
Input Voltage Ranges
0 to REF
IN
0 to 2 REF
IN
±1
20
V
V
μA max
pF typ
RANGE Bit Set to 1
RANGE Bit Set to 0, AV
DD
/V
DRIVE
= 4.75 V to 5.25 V
DC Leakage Current
Input Capacitance
REFERENCE INPUT
REF
IN
Input Voltage
DC Leakage Current
REF
IN
Input Impedance
LOGIC INPUTS
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current, I
IN
Input Capacitance, C
IN3
LOGIC OUTPUTS
Output High Voltage, V
OH
Output Low Voltage, V
OL
Floating-State Leakage Current
Floating-State Output Capacitance
3
Output Coding
2.5
±1
36
V
μA max
k typ
±1% Specified Performance
f
SAMPLE
= 1 MSPS
0.7 V
DRIVE
0.3 V
DRIVE
±1
10
V min
V max
μA max
pF max
Typically 10 nA, V
IN
= 0 V or V
DRIVE
V
DRIVE
–
0.2
0.4
±1
10
Straight (Natural) Binary
Twos Complement
V min
V max
μA max
pF max
I
SOURCE
= 200 μA, AV
DD
= 2.7 V to 5.25 V
I
SINK
= 200 μA
Coding Bit Set to 1
Coding Bit Set to 0
CONVERSION RATE
Conversion Time
Track-and-Hold Acquisition Time
800
300
300
1
ns max
ns max
ns max
MSPS max
16 SCLK Cycles with SCLK at 20 MHz
Sine Wave Input
Full-Scale Step Input
See Serial Interface Section
Throughput Rate
(AV
= V
= 2.7 V to 5.25 V, REF
IN
= 2.5 V, f
SCLK
= 20 MHz, T
A
= T
MIN
to T
MAX
, unless
otherwise noted.)
–2–
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