ACPL-798J datasheet(6/17 Pages) AVAGO

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Table 7. Electrical Specifications

Unless otherwise noted, TA = –40°C to +105°C, VDD1 = 4.5 V to 5.5 V, VDD2 = 3.0 V to 5.5 V, VIN+ = –200 mV to +200 mV, and

VIN– = 0 V (single-ended connection); tested with Sinc3 filter, 256 decimation ratio, fMCLKIN = 20 MHz.

Parameter

Symbol

Min.

Typ.[1] Max.

Units

Test Conditions/Notes

Fig.

STATIC CHARACTERISTICS

Resolution

Bits

Decimation filter output set to 16bits

Integral Nonlinearity

INL

-15

LSB

TA = –40°C to +85°C; see definitions section.

-25

LSB

TA = 85°C to +105°C

Differential Nonlinearity

DNL

-0.9

0.9

LSB

No missing codes, guaranteed by design;

see Definitions section

Input Offset Voltage

VOS

-1.5

0.6

2.5

TA = –40°C to +105°C

9, 10

Input Offset Voltage vs.

Temperature

TCVOS

3.5

mV/°C

TA = –40°C to +105°C

**note: Direct short across inputs.

Input Offset Drift vs VDD1

110

mV/V

Gain Error

-2

TA = –40°C to +105°C, VIN+ = –200 to +200 mV;

see Definitions section

-1

TA = 25°C, VIN+ = –200 to +200mV

Gain Error Drift vs.

Temperature

TCGE

ppm/°C TA = –40°C to +105°C;

Gain Drift vs. VDD1

0.15%

%/V

TA = –40°C to +105°C;

ANALOG INPUTS

Full-Scale Differential

Voltage Input Range

FSR

±320

Referenced to GND1

Linear Input Range

VIN+,

VIN-

±200

Referenced to GND1

Average Input Bias Current IINA

-0.5

VDD1 = 5V, VDD2 = 5V, VIN+ = 0 V; Note 3

Average Input Resistance

RIN

12.5

Across VIN+ or VIN– to GND1; Note 3; FCLKIN=20MHz.

Input Capacitance

CINA

Across VIN+ or VIN– to GND1

AC CHARACTERISTICS

Signal-to-Noise Ratio

SNR

TA = –40°C to +105°C; see Definitions section. Note 4.

Signal-to- (Noise +

Distortion) Ratio

SNDR

TA = –40°C to +105°C; see Definitions section. Note 4. 13,14,15

Effective Number of Bits

ENOB

Bits

See definitions section

Isolation Transient

Immunity

CMR

(CMTI)

kV/

VCM = 1 kV, TA = 25°C

DIGITAL INPUTS AND OUTPUTS

Output differential Voltage

(Mdat+, Mdat-)

Vod

350

Rload = 100ohm; Mdat+ - Mdat-, VDD1, VDD2 =5V.

Note 5.

Output Common Mode

Voltage

Vocm

1.25

1.5

Vdd1, Vdd2 = 5V.

Output Short Circuit

Current (Mdat+, Mdat-)

IOSD

3.5

Output shorted to gnd.

Input Threshold high

(MCLKin+, MCLKin-)

VthH

100

Referenced to Vocm.

Input Threshold Low

(MCLKin+, MCLKin-)

VthL

-100

Referenced to Vocm.

POWER SUPPLY

Input Side Supply Current

IDD1

15.5

VDD1 = 5.5 V

16, 17,18

IDD2

14.5

VDD2 = 3.3 V

VDD2 = 5 V

19, 20, 21

Notes:

1. All Typical values are under Typical Operating Conditions at TA = 25°C, VDD1 = 5 V, VDD2 = 5 V.

2. Beyond the full-scale input range the data output is either all zeroes or all ones.

3. Because of the switched-capacitor nature of the isolated modulator, time averaged values are shown.

4. Input signal frequency = 1Khz.

5. Output differential voltage Vod = Mdat+ - Mdat-.

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