SM9501A/B

NIPPON PRECISION CIRCUITS INC.—6

9501B version

Parameter

Symbol

Condition

Rating

Unit

min

typ

max

Supply voltage

4.5

5.0

5.5

V

Maximum operating current

1. Measured using the standard circuit.

PON: VSS, OUT: OPEN

–

65

100

µA

0.1mVrms input (differential input),

PON: VSS, OUT: OPEN

–55–

µA

Standby mode current consumption

PON: VDD or OPEN, FCN: VDD or OPEN,

HLDN: VDD or OPEN

–

–

0.1

µA

Minimum input voltage range

IN1–IN2 differential input, FIN = 40kHz, 60kHz

Ta = 25

°C

–

0.5

1.0

µVrms

Maximum input voltage range

IN1–IN2 differential input, FIN = 40kHz, 60kHz

80

–

–

mVrms

Input frequency

IN1–IN2 differential input

35

–

80

kHz

Analog switch resistance

–

–

15

Ω

2. The time taken under stable wave input conditions from when power is applied or standby is released, using PON, until stable digital output occurs

within ratings.

When supply is applied

–

–

8

sec

From standby mode

–

–

8

sec

Gain hold time

± 3dB change

1

–

–

sec

Input voltage

PON, FCN, HLDN pins

–

–

0.5

V

PON, FCN, HLDN pins

––

V

Input current

–

–

–3.2

µA

–

–

0.1

µA

LOW-level output current

10

–

–

µA

HIGH-level output current

–10

–

–

µA

3. The time taken, with 10:1 input signal amplitude ratio and 500ms pulsewidth, from when a change in signal input occurs until the output OUT changes.

Note that this characteristic is very dependent on the antenna and crystal filter characteristics. The standard crystal used here has the following equiv-

alent circuit coefficients.

FIN = 40/60kHz, standard crystal,

NPC standard jig

–

–

160

ms

–

–

200

ms

4. Values obtained when using the standard crystal employed here. Note that these values are dependent on the crystal characteristics, and should be

considered as reference values.

100

200

300

ms

400

500

650

ms

700

800

900

ms

5. Time averaged rms values, where the noise is white noise and the measurement bandwidth is determined by the crystal filter equivalent used in the

standard circuit.

S/N

––9

dB

f [kHz]

40

6.70280

2.36228

11.4492

1.42773

60

5.17396

1.36007

13.4826

1.04927