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S89110 Datasheet(PDF) 13 Page - Seiko Instruments Inc

Part # S89110
Description  MINI ANALOG SERIES CMOS OPERATIONAL AMPLIFIER
PDF  34 Pages
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Manufacturer  SII [Seiko Instruments Inc]
Direct Link  http://www.sii.co.jp
Logo SII - Seiko Instruments Inc

S89110 Datasheet(HTML) 13 Page - Seiko Instruments Inc

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MINI ANALOG SERIES CMOS OPERATIONAL AMPLIFIER
Rev.3.1_01
S-89110/89120 Series
13
8. Voltage gain (open loop)
RF
RS
RS
RF
VDD
VM
+
−
NULL
VOUT
VSSN
VDDN
+
−
D.U.T
VCMR = VDD / 2
Figure 15
• Voltage-gain (open loop) (AVOL)
The voltage gain (AVOL) can be calculated by the following expression, with VOUT measured at each VM.
Test conditions:
When VM = VDD
− 0.5 V: VM = VM1, VOUT = VOUT1,
When VM = VSS
+ 0.5 V: VM = VM2, VOUT = VOUT2
AVOL = 20 log
VM1
− VM2
VOUT1
− VOUT2 ×
RF
+ RS
RS
9. Slew rate (SR)
Measured by the voltage follower circuit.
VCMR Max.
VSS
(= 0 V)
tTHL
VCMR Max.
× 0.9
tR = tF = 20 ns (VSS to VCMR Max.)
tTLH
VCMR Max.
× 0.1
VIN(+)
VOUT
(= VIN(−))
SR =
VCMR Max.
× 0.8
tTLH
SR =
VCMR Max.
× 0.8
tTHL
Figure 16



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