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參數(shù)資料
| 型號： | AD7485BST |
| 廠商： | AMIC Technology Corporation |
| 英文描述： | 1 MSPS, Serial 14-Bit SAR ADC |
| 中文描述： | 1 MSPS的，串行14位SAR ADC |
| 文件頁數(shù)： | 2/16頁 |
| 文件大小： | 769K |
| 代理商： | AD7485BST |
REV. 0
–2–
AD7485–SPECIFICATIONS
1
Parameter
DYNAMIC PERFORMANCE
2, 3
Signal to Noise + Distortion (SINAD)
4
Specification
Unit
Test Conditions/Comments
f
IN
= 500 kHz Sine Wave
76.5
78
77
–
90
–
95
–
92
–
88
dB min
dB typ
dB typ
dB max
dB typ
dB typ
dB max
Internal Reference
Total Harmonic Distortion (THD)
4
Internal Reference
Peak Harmonic or Spurious Noise (SFDR)
4
Intermodulation Distortion (IMD)
4
Second-Order Terms
Third-Order Terms
Aperture Delay
Full Power Bandwidth
–
96
–
94
10
40
3.5
dB typ
dB typ
ns typ
MHz typ
MHz typ
f
IN1
= 95.053 kHz, f
IN2
= 105.329 kHz
@ 3 dB
@ 0.1 dB
DC ACCURACY
Resolution
Integral Nonlinearity
4
14
±
1
±
0.5
±
0.75
±
0.25
±
6
0.036
±
6
0.036
Bits
LSB max
LSB typ
LSB max
LSB typ
LSB max
%FSR max
LSB max
%FSR max
Differential Nonlinearity
4
Guaranteed No Missed Codes to 14 Bits
Offset Error
4
Gain Error
4
ANALOG INPUT
Input Voltage
0
2.5
±
1
35
V min
V max
μ
A max
pF typ
DC Leakage Current
Input Capacitance
5
REFERENCE INPUT/OUTPUT
V
REFIN
Input Voltage
V
REFIN
Input DC Leakage Current
V
REFIN
Input Capacitance
5
V
REFIN
Input Current
6
V
REFOUT
Output Voltage
V
REFOUT
Error @ 25
°
C
V
REFOUT
Error T
MIN
to T
MAX
V
REFOUT
Output Impedance
LOGIC INPUTS
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current, I
IN
Input Capacitance, C
IN5
LOGIC OUTPUTS
Output High Voltage, V
OH7
Output Low Voltage, V
OL7
Floating-State Leakage Current
Floating-State Output Capacitance
5
Output Coding
2.5
±
1
25
220
2.5
±
50
±
100
1
V
μ
A max
pF typ
A typ
V typ
mV typ
mV max
typ
±
1% for Specified Performance
External Reference
V
DRIVE
–
1
0.4
±
1
10
V min
V max
μ
A max
pF typ
0.7
×
V
DRIVE
0.3
×
V
DRIVE
±
10
10
Straight (Natural) Binary
V min
V max
μ
A max
pF max
CONVERSION RATE
Conversion Time
Track/Hold Acquisition Time
24
100
70
1
MCLKs
ns max
ns max
MSPS max
Sine Wave Input
Full-Scale Step Input
Throughput Rate
(V
= 5 V
5%, AGND = DGND = 0 V, V
= External, f
= 1 MSPS; all specifica-
tions T
MIN
to T
MAX
and valid for V
DRIVE
= 2.7 V to 5.25 V, unless otherwise noted.)
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