ADE7757_15 datasheet(2/16 Pages) AD

2 / 16 page

REV. A

–2–

ADE7757–SPECIFICATIONS

(VDD = 5 V

5%, AGND = DGND = 0 V, On-Chip Reference, RCLKIN = 6.2 k ,

0.5%

50 ppm/ C, TMIN to TMAX = –40 C to +85 C, unless otherwise noted.)

Parameter

Value

Unit

Test Conditions/Comments

ACCURACY

1, 2

Measurement Error

1 on Channel V1

Channel V2 with Full-Scale Signal (

±165 mV), 25°C

0.1

% Reading typ

Over a Dynamic Range 500 to 1

Phase Error

1 between Channels

Line Frequency = 45 Hz to 65 Hz

V1 Phase Lead 37

(PF = 0.8 Capacitive)

±0.1

Degrees (

°) max

V1 Phase Lag 60

(PF = 0.5 Inductive)

±0.1

Degrees (

°) max

AC Power Supply Rejection

S0 = S1 = 1,

Output Frequency Variation (CF)

0.2

% Reading typ

V1 = 21.2 mV rms, V2 = 116.7 mV rms @ 50 Hz

Ripple on VDD of 200 mV rms @ 100 Hz

DC Power Supply Rejection

S0 = S1 = 1,

Output Frequency Variation (CF)

±0.3

% Reading typ

V1 = 21.2 mV rms, V2 = 116.7 mV rms,

VDD = 5 V

± 250 mV

ANALOG INPUTS

See Analog Inputs section

Channel V1 Maximum Signal Level

±30

mV max

V1P and V1N to AGND

Channel V2 Maximum Signal Level

±165

mV max

V2P and V2N to AGND

Input Impedance (DC)

320

Ω min

OSC = 450 kHz, RCLKIN = 6.2 k

Ω, 0.5% ± 50 ppm/°C

Bandwidth (–3 dB)

kHz nominal

OSC = 450 kHz, RCLKIN = 6.2 k

Ω, 0.5% ± 50 ppm/°C

ADC Offset Error

1, 2

±18

mV max

See Terminology Section and Typical Performance Characteristics

Gain Error

±4% Ideal typ

External 2.5 V Reference

V1 = 21.2 mV rms, V2 = 116.7 mV rms

OSCILLATOR FREQUENCY (OSC)

450

kHz nominal

RCLKIN = 6.2 k

Ω, 0.5% ± 50 ppm/°C

Oscillator Frequency Tolerance

±12

% Reading typ

Oscillator Frequency Stability

±30

ppm/

°C typ

REFERENCE INPUT

REFIN/OUT Input Voltage Range

2.7

V max

2.5 V + 8%

2.3

V min

2.5 V – 8%

Input Capacitance

pF max

ON-CHIP REFERENCE

Nominal 2.5 V

Reference Error

±200

mV max

Temperature Coefficient

±20

ppm/

°C typ

LOGIC INPUTS

SCF, S0, S1,

Input High Voltage, VINH

2.4

V min

VDD = 5 V

± 5%

Input Low Voltage, VINL

0.8

V max

VDD = 5 V

± 5%

Input Current, IIN

±1

µA max

Typically 10 nA, VIN = 0 V to VDD

Input Capacitance, CIN

pF max

LOGIC OUTPUTS

F1 and F2

Output High Voltage, VOH

ISOURCE = 10 mA

4.5

V min

VDD = 5 V

Output Low Voltage, VOL

ISINK = 10 mA

0.5

V max

VDD = 5 V

Output High Voltage, VOH

ISOURCE = 5 mA

4V min

VDD = 5 V

Output Low Voltage, VOL

ISINK = 5 mA

0.5

V max

VDD = 5 V

Frequency Output Error

1, 2 (CF)

±10

% Ideal typ

External 2.5 V Reference,

V1 = 21.2 mV rms, V2 = 116.7 mV rms

POWER SUPPLY

For Specified Performance

VDD

4.75

V min

5 V – 5%

5.25

V max

5 V + 5%

IDD

mA max

Typically 4 mA

NOTES

1See Terminology section for explanation of specifications.

2See plots in Typical Performance Characteristics.

3Sample tested during initial release and after any redesign or process change that may affect this parameter.

Specifications subject to change without notice.

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