參數(shù)資料
型號(hào): HCPL-7870
英文描述: Isolated 15-bit A/D Converter(隔離15位A/D轉(zhuǎn)換器)
中文描述: 隔離15位A / D轉(zhuǎn)換器(隔離15位的A / D轉(zhuǎn)換器)
文件頁(yè)數(shù): 5/30頁(yè)
文件大?。?/td> 344K
代理商: HCPL-7870
5
Isolated A/D Converter Performance
Electrical Specifications
Unless otherwise noted, all specifications are at V
IN+
= -200 mV to +200 mV and V
IN-
= 0 V; all Typical
specifications are at T
A
= 25
°
C and V
DD1
= V
DD2
= V
DD
= 5 V; all Minimum/Maximum specifications are at
T
A
= -40
°
C to +85
°
C, V
DD1
= V
DD2
= V
DD
= 4.5 to 5.5 V.
Parameter
Symbol
Min.
Typ.
STATIC CONVERTER CHARACTERISTICS
Resolution
15
Integral Nonlinearity
INL
3
0.01
Differential Nonlinearity
DNL
Uncalibrated Input Offset
V
OS
-3
0
Offset Drift vs. Temperature
dV
OS
/dT
A
2
Offset drift vs. V
DD1
dV
OS
/dV
DD1
0.12
Internal Reference Voltage
V
REF
320
Absolute Reference Voltage
-4
Tolerance
Reference Voltage
-1
Matching
V
REF
Drift vs. Temperature
dV
REF
/dT
A
60
V
REF
Drift vs. V
DD1
dV
REF
/dV
DD1
0.2
Full Scale Input Range
-V
REF
Recommended Input
-200
Voltage Range
DYNAMIC CONVERTER CHARACTERISTICS
(Digital Interface IC is set to Conversion Mode 3.)
Signal-to-Noise Ratio
SNR
62
73
Total Harmonic Distortion
THD
-67
Signal-to-(Noise
SND
66
+ Distortion)
Effective Number of Bits
ENOB
10
12
Conversion Time
t
C2
0.8
t
C1
20
t
C0
40
Signal Delay
t
DSIG
20
Over-Range Detect Time
t
OVR1
2.0
3.0
Threshold Detect Time
t
THR1
10
Signal Bandwidth
BW
18
22
Isolation Transient
CMR
15
20
Immunity
Max.
Units
Test Conditions
Fig. Note
bits
LSB
%
LSB
mV
μ
V/
°
C
mV/V
mV
%
1
2
30
0.14
1
3
10
3
4
3
V
IN+
= 0 V
5
4
4
6
5
1
%
T
A
= 25
°
C.
See Note 5
ppm/
°
C
%
mV
+V
REF
+200
6
dB
V
IN+
= 35 Hz,
400 mV
pk-pk
(141 mV
rms
) sine
wave.
2,9
bits
μ
s
8
7,
14
7
8
1.1
24
48
24
4.2
Pre-Trigger Mode 2
Pre-Trigger Mode 1
Pre-Trigger Mode 0
10
9
10
11
12
13
V
IN+
= 0 to 400 mV 12
step waveform
kHz
kV/
μ
s
11
V
ISO
= 1 kV
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