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| HCPL-7860 Datasheet, PDF (5/28 Pages) Agilent(Hewlett-Packard) – Isolated 15-bit A/D Converter | |||
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Isolated A/D Converter Performance
Electrical Specifications
Unless otherwise noted, all specifications are at VIN+ = -200 mV to +200 mV and VIN- = 0 V; all Typical
specifications are at TA = 25°C and VDD1 = VDD2 = VDD = 5 V; all Minimum/Maximum specifications are at
TA = -40°C to +85°C, VDD1 = VDD2 = VDD = 4.5 to 5.5 V.
Parameter
Symbol Min. Typ. Max. Units Test Conditions Fig. Note
STATIC CONVERTER CHARACTERISTICS
Resolution
15
bits
1
Integral Nonlinearity
INL
6 30 LSB
32
0.025 0.14 %
4
Differential Nonlinearity
DNL
1
LSB
3
Uncalibrated Input Offset
VOS
-1
Offset Drift vs. Temperature dVOS/dTA
Offset drift vs. VDD1
dVOS/dVDD1
Internal Reference Voltage
VREF
Absolute Reference Voltage
-4
Tolerance
1 2.5
4
0.7
326
4
mV
µV/ °C
mV/V
mV
%
VIN+ = 0 V
5
4
65
Reference Voltage
Matching
-1
1
% TA = 25°C.
See Note 5
VREF Drift vs. Temperature dVREF/dTA
190
ppm/ °C
VREF Drift vs. VDD1
dVREF /dVDD1
0.9
%
Full Scale Input Range
-VREF
+VREF mV
6
Recommended Input
-200
+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)
dB VIN+ = 35 Hz,
2,9
400 mVpk-pk
(141 mVrms) sine
wave.
Effective Number of Bits
ENOB 10 12
bits
87
Conversion Time
Signal Delay
Over-Range Detect Time
Threshold Detect Time
Signal Bandwidth
Isolation Transient
Immunity
tC2
tC1
tC0
tDSIG
tOVR1
tTHR1
BW
CMR
0.7 1.0
18 22
µs Pre-Trigger Mode 2 7, 8
Pre-Trigger Mode 1 14
37 44
Pre-Trigger Mode 0
18 22
10 9
2.0 2.7 4.2
10
VIN+ = 0 to 400 mV 12 10
step waveform
11
18 22
kHz
11 12
15 20
kV/µs VISO = 1 kV
13
1-264
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