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S-19610AB0A-K8T2U Datasheet, PDF (10/18 Pages) Seiko Instruments Inc – MINI ANALOG SERIES | |||
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MINI ANALOG SERIES FOR AUTOMOTIVE 125°C OPERATION CMOS OPERATIONAL AMPLIFIER
S-19610A
Rev.1.0_01
8. Voltage gain
VDD
RF
RS
â
D.U.T
+
RS
RF
1 MΩ
VCMR = VDD / 2
VDD / 2
VDDN
+
NULL
â
VSSN
VM
Figure 10 Test Circuit 8
⢠Voltage gain (open loop) (AVOL)
VOUT
The voltage gain (AVOL) can be calculated by the
following expression, with VOUT measured at
each VM.
Test conditions:
VM = VDD â 0.5 V: VM = VM1, VOUT = VOUT1,
VM = 0.5 V: VM = VM2, VOUT = VOUT2
ï¨ï§ï¦ AVOL = 20 log
VM1 â VM2
VOUT1 â VOUT2
à RFR+SRSï¸ï·ï¶
9. Slew rate (SR)
Measured by the voltage follower circuit.
IN(+) = VCMR Max.
tR = tF = 20 ns (0 V to VCMR Max.)
IN(+) = 0 V
VOUT (= IN(â))
VOUT (= IN(â))
tTHL
tTLH
Figure 11
VCMR Max.
VCMR Max. Ã 0.9
VCMR Max. Ã 0.1
SR =
VCMR Max. Ã 0.8
tTLH
SR =
VCMR Max. Ã 0.8
tTHL
10
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