CS5464 datasheet(9/46 Pages) CIRRUS

Part #	CS5464

Description	Three-channel, Single-phase Power/Energy IC

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Manufacturer	CIRRUS [Cirrus Logic]

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CS5464

DS682PP1

9

VOLTAGE REFERENCE

Notes: 8. The voltage at VREFOUT is measured across the temperature range. From these measurements the

following formula is used to calculate the VREFOUT Temperature Coefficient:.

9. Specified at maximum recommended output of 1 µA, source or sink.

DIGITAL CHARACTERISTICS

•

Min / Max characteristics and specifications are guaranteed over all Recommended Operating Conditions.

•

Typical characteristics and specifications are measured at nominal supply voltages and TA = 25 °C.

•

VA+ = VD+ = 5V ±5%; AGND = DGND = 0 V. All voltages with respect to 0 V.

•

MCLK = 4.096 MHz.

Parameter

Symbol

Min

Typ

Max

Unit

Reference Output

Output Voltage

VREFOUT

+2.4

+2.5

+2.6

V

Temperature Coefficient

(Note 8)

TCVREF

-

25

60

ppm/°C

Load Regulation

(Note 9)

∆VR

-6

10

mV

Reference Input

Input Voltage Range

VREFIN

+2.4

+2.5

+2.6

V

Input Capacitance

-

4

-

pF

Input CVF Current

-

100

-

nA

Parameter

Symbol

Min

Typ

Max

Unit

Master Clock Characteristics

Master Clock Frequency

Internal Gate Oscillator (Note 11)

MCLK

2.5

4.096

20

MHz

Master Clock Duty Cycle

40

-

60

%

CPUCLK Duty Cycle

(Note 12 and 13)

40

-

60

%

Filter Characteristics

Phase Compensation Range

(Voltage Channel, 60 Hz)

-2.8

-

+2.8

°

Input Sampling Rate

DCLK = MCLK/K

-

DCLK/8

-

Hz

Digital Filter Output Word Rate

(Both Channels)

OWR

-

DCLK/1024

-

Hz

High-pass Filter Corner Frequency

-3 dB

-0.5

-

Hz

Full-scale DC Calibration Range (Referred to Input) (Note 14)

FSCR

25

-

100

%F.S.

Channel-to-channel Time-shift Error

(Note 15)

1.0

µs

Input/Output Characteristics

High-level Input Voltage

All Pins Except XIN and SCLK and RESET

XIN

SCLK and RESET

VIH

0.6 VD+

(VD+) - 0.5

0.8 VD+

-

V

Low-level Input Voltage (VD = 5 V)

All Pins Except XIN and SCLK and RESET

XIN

SCLK and RESET

VIL

-

0.8

1.5

0.2 VD+

V

(VREFOUTMAX - VREFOUTMIN)

VREFO UTAVG

(

1

T

A

MAX

- T

A

MIN

(

1.0 x 10

(

6

TC

VREF

=

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