S89713 Datasheet, PDF(10/24 Page) Seiko Instruments Inc – MINI ANALOG SERIES LOW INPUT OFFSET VOLTAGE CMOS OPERATIONAL AMPLIFIER

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S89713 Datasheet, PDF (10/24 Pages) Seiko Instruments Inc – MINI ANALOG SERIES LOW INPUT OFFSET VOLTAGE CMOS OPERATIONAL AMPLIFIER

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MINI ANALOG SERIES LOW INPUT OFFSET VOLTAGE CMOS OPERATIONAL AMPLIFIER

S-89713 Series

Rev.3.4_00

8. Voltage gain

VDD

D.U.T

VCMR = VDD / 2

VDD / 2

VDDN

NULL

VSSN

â¢ Voltage gain (open loop) (AVOL)

The voltage gain (AVOL) can be calculated by the

following expression, with VOUT measured at

each VM.

VOUT

Test conditions:

VM = VDD â 0.1 V: VM = VM1, VOUT = VOUT1

VM = 0.1 V: VM = VM2, VOUT = VOUT2

ï¨ï§ï¦ AVOL = 20 log

VM1 â VM2

VOUT1 â VOUT2

RL = 10 kÎ©

Ã RFR+SRSï¸ï·ï¶

Figure 12 Test Circuit 8

9. Slew rate

Measured by the voltage follower circuit.

VIN(+)

VDD

VSS

(= 0 V)

tR = tF = 20 ns (VSS to VDD)

tTHL

â¢ Slew rate (SR)

When falling

VDD Ã 0.8

t THL

VOUT

(= VIN(ï¼))

VDD Ã 0.9

When rising

tTLH

VDD Ã 0.1

VDD Ã 0.8

t TLH

Figure 13

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