Pin Description

Pin

Descriptions

SIGIN

Signal input AC or DC coupled (see level limitations elsewhere).

DETECT

Active output indicating signal detection. Activated by ENABLE.

ENABLE

Enables DETECT output. Used to mask signal activity.

V

DD

Most positive power supply pin.

V

REF

Internally generated reference voltage. (V

V

SS

Most negative power supply pin.

XIN, XOUT

Crystal attachment pins. XIN may be used as the input for an external 3.58 MHz clock.

Absolute Maximum Ratings

DC Supply Voltage (V

6.0V

Voltage on SIGNAL IN(V

Voltage on Any Pin Except SIGNAL IN

(V

Storage Temperature Range

-65° to 150°C

Operating Temperature

-40°C to 85°C

Lead Soldering Temperature

260° for 5 seconds

Note:

Exceeding these ratings may permanently damage the M-980-02.

www.clare.com

2

M-980-02

Rev. 3

Absolute Maximum Ratings are stress ratings. Stresses in

excess of these ratings can cause permanent damage to

the device. Functional operation of the device at these or

any other conditions beyond those indicated in the opera-

tional sections of this data sheet is not implied. Exposure of

the device to the absolute maximum ratings for an extend-

ed period may degrade the device and effect its reliability.

Specifications

Parameter

Min

Max

Units

Notes

Supply Current

-

5

mA

10-

Signal Detection

Level (5V)

-38

0

dBm

1,2

Level (3V)

-40

0

dBm

-

Duration

40

-

ms

-

Signal Rejection

Level

Inband (5V)

-

-50

dBm

1,2

Inband (3V)

-

-55

dBm

-

Outband

-

0

dBm

1,3

Quiet Interval Detect

Duration

40

-

ms

8

85

-

ms

9

“Detect” Output Pin

Logic 0

-

0.5

V

4

Logic 1

V

-

V

4

“Enable”, “XIN” Input Pin

Logic 0

V

SS

V

V

5

Logic 1

V

V

DD

V5

“XIN” Duty Cycle

40

60

%

6

“XOUT” Loading

-

10

pF

-

“VREF” Output Pin

Deviation

-2

+2

%

7

Resistance

3.25

6.75

k

Ω

-

“SIGIN” Input Pin

AC + DC level

V

V

DD

V-

Impedance (500 Hz)

80

-

k

Ω

-

Power Consumption

3V operation

-

15

mW

-

5V operation

-

25

mW

-

Unless otherwise noted, V

Notes:

1. 0 dBm = 0.775 Vrms.

2. F = 315 to 640 Hz.

3. F > 1025 Hz, < 190 Hz.

4. Output current = 1 mA, V

5. Input current - 10 mA max.

6. External clock.

7. Nominal = (V

8. Signal dropping from -38 to -65 dBm.

9. Signal dropping from -10 to -65 dBm.