FS7755-IS datasheet(7/22 Pages) FORTUNE

7 / 22 page

FS7755

Rev. 1.1

7/22

Absolute Maximum Ratings*

(TA = 25℃ unless otherwise noted.)

AVDD to AGND.……………………………………………..…………..….…………………………….. –0.3V to +7V

DVDD to DGND.…………………..…………………………………….…………….….……………… ..–0.3V to +7V

DVDD to AVDD.………………………………………………………….……………………..…………. .–0.3V to +0.3V

Analog Input Voltage to AGND, V1P, V1N, V2P, and V2N.……………………………………………. –6V to +6V

Reference Input Voltage to AGND.…………………………………….……….………..………–0.3V to AVDD + 0.3V

Digital Input Voltage to DGND.……………………………………….……….……..………..… –0.3V to DVDD + 0.3V

Digital Output Voltage to DGND………………………………………..………..…………..…. –0.3V to DVDD + 0.3V

Operating Temperature Range

Industrial…………………………………………………………...…………………...………….-40℃ to +85℃

Storage Temperature Range………………………………………………..…………………………..-65℃ to +150℃

Junction Temperature……………………………………………………………..……………………………….150℃

24-Lead SSOP:

Power Dissipation………………………………………………………………………………………….450mW

θJA Thermal Impedance………………………………………………………………………………….112℃/W

Lead Temperature, Soldering

Phase Vapor(60sec)……..…………………………………………………………………………..215℃

Infrared(15sec)………………………………………………………………………………………..220℃

*Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device.

This is a stress rating only; functional operation of the device at these or any other conditions above those

listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect device reliability.

10.

Electrical Characteristics

(AVDD = DVDD = 5V ± 5%, AGND = DGND = 0V, On-Chip Reference, CLKIN = 3.579545MHz, Tmin to Tmax =

-40℃ to +85℃.)

Parameter

Specification

Unit

Test Conditions/Comments

Accuracy

1, 2

Measurement Error

1 on Channel 1

Channel 2 with Full-Scale Signal (±660 mV), 25℃

Gain = 1

0.1

% Reading typ Over a Dynamic Range 500 to 1

Gain = 8

0.1

% Reading typ Over a Dynamic Range 500 to 1

Gain = 16

0.1

% Reading typ Over a Dynamic Range 500 to 1

Gain = 32

0.1

% Reading typ Over a Dynamic Range 500 to 1

Line Frequency = 45Hz to 65Hz

AC Power Supply Rejection

Output Frequency Variation (CF)

0.2

% Reading typ V1 = 100mVrms, V2 = 100mVrms, @50Hz

Ripple on AVDD of 200mVrms @100Hz

S0 = S1 = 1, G0 = G1 = 0

DC Power Supply Rejection

Output Frequency Variation (CF)

±0.3

% Reading typ V1 = 100mVrms, V2 = 100mVrms,

AVDD = DVDD = 5V ± 250mV

Analog Inputs

See Analog Inputs section

Maximum Signal Levels

±1

V max

V1P, V1N, V2N, and V2P to AGND

Input Impedance (DC)

390

kΩ min

CLKIN = 3.579545MHz

Bandwidth (–3dB)

kHz typ

CLKIN/256, CLKIN = 3.579545MHz

ADC Offset Error

1, 2

±25

mV max

Gain = 1, See Terminology and Performance Graphs

Gain Error

±7

% Ideal typ

External 2.5 V Reference, Gain = 1

V1 = 470mVdc, V2 = 660mVdc

Gain Error Match

±0.2

% Ideal typ

External 2.5 V Reference

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