ST7162 datasheet(3/17 Pages) STMICROELECTRONICS

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PIN FUNCTIONS

Name

Function

CLOCK

MCU Interface

AUX DATA IN

MCU Interface

DATA IN

MCU Interface

ENABLE

MCU Interface

MCU CLOCK

Scaled down reference frequency for clocking the MCU

6VSS

Negative Power Supply

OSC OUT

Oscillator Output

OSC IN

Oscillator Input

FIN RX

Input to the 16 bits Receive Counter

PD RX

Phase detector output of the Receive loop

Out RX

Power saving output bit for the RX loop and FIN RX divided by N1 for testing the RX input

sensitivity.

VDD

Positive power supply

OUT TX

Power saving output bit for the TX loop and FIN TX divided by N2 for testing the TX input

sensitivity.

FIN TX

Input to the 16 bits Transmit counter.

PD TX

Phase detector output of the transmit loop

Lock detect output of the transmit loop.

ELECTRICAL CHARACTERISTICS (Tamb = 25

°C, voltage reference = VSS)

Symbol

Parameter

Test Condition

VDD

Min.

Typ.

Max.

Unit

SUPPLY

VDD

Supply Voltage

5.5

IDD up

Supply Current

200mVpkpk sinus at input;

FIN RX = 36MHz, FIN TX =49MHz;

loop in lock condition;

fosc = 10.24MHz; no output load

3.7

7.7

IDDRX

Supply Current

200mVpkpk sinus at input;

FIN RX = 36MHz; TX Loop in

Power down; fosc = 10.24MHz;

no output load

2.5

5.3

IDD down

Supply Current

Stand-by mode for all counters;

OSCIN pin Grounded;

MCU interface disabled

150

300

µA

TX and RX INPUTS

CIN

Input Capacitance

8pF

IIN up

Input Current

0 < VIN <VDD

–60

– 100

100

µA

Fmax

Input Frequency

Input = sinus 200mVpkpk

AC coupled

3-5V

MHz

OSCILLATOR

CIN

Input Capacitance

8pF

COUT

Output Capacitance

IIN up

Input Current

0 < VIN <VDD DC measured

–60

– 100

100

µA

Fmax

Input Frequency

3-5V

MHz

ST7162

3/17

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