HCPL-0870 datasheet(5/28 Pages) HP

5 / 28 page

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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

bits

Integral Nonlinearity

INL

LSB

0.025

0.14

Differential Nonlinearity

DNL

LSB

Uncalibrated Input Offset

VOS

-1

2.5

VIN+ = 0 V

Offset Drift vs. Temperature

dVOS/dTA

µV/°C4

Offset drift vs. VDD1

dVOS/dVDD1

0.7

mV/V

Internal Reference Voltage

VREF

326

Absolute Reference Voltage

-4

Tolerance

Reference Voltage

-1

TA = 25°C.

Matching

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

Recommended Input

-200

+200

Voltage Range

DYNAMIC CONVERTER CHARACTERISTICS

(Digital Interface IC is set to Conversion Mode 3.)

Signal-to-Noise Ratio

SNR

VIN+ = 35 Hz,

2,9

Total Harmonic Distortion

THD

-67

Signal-to-(Noise

SND

+ Distortion)

Effective Number of Bits

ENOB

bits

Conversion Time

tC2

0.7

1.0

µs

Pre-Trigger Mode 2

tC1

Pre-Trigger Mode 1

tC0

Pre-Trigger Mode 0

Signal Delay

tDSIG

Over-Range Detect Time

tOVR1

2.0

2.7

4.2

VIN+ = 0 to 400 mV 12

Threshold Detect Time

tTHR1

Signal Bandwidth

kHz

Isolation Transient

CMR

kV/

µsVISO = 1 kV

Immunity

400 mVpk-pk

(141 mVrms) sine

wave.

step waveform

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