CF9501A datasheet(6/10 Pages) NPC

6 / 10 page

SM9501A/B

NIPPON PRECISION CIRCUITS INC.—6

9501B version

VDD = 4.5 to 5.5V, VSS = 0V, Ta = −40 to +85°C unless otherwise noted.

Parameter

Symbol

Condition

Rating

Unit

min

typ

max

Supply voltage

VDD

4.5

5.0

5.5

Maximum operating current

consumption1

1. Measured using the standard circuit.

IDDM

VDD = 5.0V, Ta = 25°C, no input signal,

PON: VSS, OUT: OPEN

–

100

µA

Operating current consumption1

IDDT

VDD = 5.0V, Ta = 25°C, 500ms pulsewidth,

0.1mVrms input (differential input),

PON: VSS, OUT: OPEN

–55–

µA

Standby mode current consumption

IST

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

HLDN: VDD or OPEN

–

0.1

µA

Minimum input voltage range

VFMIN

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

Ta = 25

°C

–

0.5

1.0

µVrms

Maximum input voltage range

VFMAX

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

–

mVrms

Input frequency

FIN

IN1–IN2 differential input

–

kHz

Analog switch resistance

VIN2 = 0V, VIN3 = 50mV

–

Ω

Startup time2

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.

tON

When supply is applied

–

sec

Startup time2 (PON)

tPON

From standby mode

–

sec

Gain hold time

tHLD

± 3dB change

–

sec

Input voltage

VIL

PON, FCN, HLDN pins

–

0.5

VIH

PON, FCN, HLDN pins

0.8VDD

––

Input current

IIL

VIL = 0V, PON, FCN, HLDN pins

–

–3.2

µA

IIH

VIH = VDD, PON, FCN, HLDN pins

–

0.1

µA

LOW-level output current

IOL

VDD = 4.5V, OUT = 0.5V

–

µA

HIGH-level output current

IOH

VDD = 4.5V, OUT = 4.0V

–10

–

µA

Fall time output propagation delay3

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.

tDN

FIN = 40/60kHz, standard crystal,

NPC standard jig

VIN = 1µVrms to 80mVrms

–

160

Rise time output propagation delay3

tUP

–

200

LOW-level output pulsewidth4 (200ms)

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.

T200

100

200

300

LOW-level output pulsewidth4 (500ms)

T500

400

500

650

LOW-level output pulsewidth4 (800ms)

T800

700

800

900

Noise rejection ratio5

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

f [kHz]

L1 [kH]

C1 [fF]

R1 [k

Ω]C0 [pF]

6.70280

2.36228

11.4492

1.42773

5.17396

1.36007

13.4826

1.04927

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