SM9403BM datasheet(6/18 Pages) NPC

Part #	SM9403BM

Description	DVDRAM Servo-amplifier LSI

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Manufacturer	NPC [Nippon Precision Circuits Inc]

Direct Link	http://www.npc.co.jp/en

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6 / 18 page

SM9403BM

NIPPON PRECISION CIRCUITS—6

Focus Sample-and-Hold, Low-pass Filter Characteristics (FSUB

→ FER)

VCC = 5V ± 5%, GND = 0V, Ta = 0 to 70°C, FSUB and FER signals in phase

Tracking Sample-and-Hold, Low-pass Filter Characteristics (TSUB

→ TRE)

VCC = 5V ± 5%, GND = 0V, Ta = 0 to 70°C, TSUB and TRE signals in phase

P arameter

Condition

Rating

Unit

min

typ

m a x

FSUB input signal range

VREF2 reference

−1.25

0

+1.25

V

FER output voltage range

VREF2 reference

−1.25

0

+1.25

V

FER output offset voltage

VREF2 reference, V IN = V REF2

–

±8.0

m V

FER output offset voltage temperature drift

VREF2 reference

–

±45

µV/

°C

FER output signal slew rate

LPF off

1

–

V/µs

FER output load regulation

IOUT = ±3mA, V IN = V REF2

–

±10

m V

FSUB input impedance

100

–

k

Ω

FER output signal gain

−0.17

0

+0.17

d B

FER output signal bandwidth1

1. C L = 20pF, RL = 500Ω

V IN = 1.5Vp-p,

−3dB from DC

LPF off (FFE = HIGH)

5 0 0

–

kHz

LPF on (FFE = LOW )

1 1 5

1 6 0

2 3 0

FER output gain peaking1

DC to

−3dB frequency

−3

–

+0.5

d B

Hold time FER output droop characteristic

V IN = 200mVp-p, CFHOLD = 1000pF

–

0.025

%/µs

S/H acquisition time

∆V

IN = 200mV, target value ± 10%

–

1

µ s

FER output hold error

With respect to the previous value

–

±4

m V

P ow er-down state FER output impedance

1

–

M

Ω

P arameter

Condition

Rating

Unit

min

typ

m a x

TSUB input signal range

VREF2 reference

−1.25

0

+1.25

V

TRE output voltage range

VREF2 reference

−1.25

0

+1.25

V

TRE output offset voltage

VREF2 reference, V IN = V REF2

–

±8.0

m V

TRE output offset voltage temperature drift

VREF2 reference

–

±45

µV/

°C

TRE output load regulation

IOUT = ±3mA, V IN = V REF2

–

±10

m V

TSUB input impedance

100

–

k

Ω

TRE output signal gain

−0.17

0

+0.17

d B

TRE output signal bandwidth1

1. C L = 20pF, RL = 500Ω

V IN = 1.5Vp-p,

−3dB from DC

TFE = HIGH

24

35

50

kHz

TFE = LOW

115

160

230

TRE output gain peaking1

DC to

−3dB frequency

−3

–

+0.5

d B

Hold time TRE output droop characteristic

V IN = 200mVp-p, CTHOLD = 1000pF

–

0.025

%/µs

S/H acquisition time

∆V

IN = 200mV, target value ±10%

–

1

µ s

TRE output hold error

With respect to the previous value

–

±4

m V

P ow er-down state TRE output impedance

1

–

M

Ω

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