S-89430ACNC-HBUTFZ Datasheet, PDF (12/33 Pages) Seiko Instruments Inc – MINI ANALOG SERIES

MINI ANALOG SERIES 0.5 μA Rail-to-Rail CMOS OPERATIONAL AMPLIFIER
S-89430/89431 Series
Rev.2.1_01
3. Common-mode input signal rejection ratio, common-mode input voltage range
V_DD
R_F
• Common-mode input signal rejection ratio (CMRR)
The common-mode input signal rejection ratio (CMRR) can be
calculated by the following expression, with VOUT measured at
each VIN.
R_S
−
+
R_S
R_F
V_OUT
Test conditions:
When VIN = VCMR Max.: VIN = VIN1, VOUT = VOUT1,
When VIN = VCMR Min.: VIN = VIN2, VOUT = VOUT2
CMRR = 20 log
 VIN1 − VIN2
 ^{VOUT1 − VOUT2}
× ^RF_R⁺_S^RS_{}
V_IN
V_DD / 2
Figure 10
• Common-mode input voltage range (VCMR)
The common-mode input voltage range is the range of VIN in
which VOUT satisfies the common-mode input signal rejection
ratio specifications.
4. Maximum output swing voltage (VOH)
V_DD
−
V_OH
+
R_L
• Maximum output swing voltage (VOH)
Test conditions:
VIN1 =
VDD
2
− 0.1 V
VIN2 =
VDD
2
+ 0.1 V
RL = 100 kΩ
V_IN1
V_IN2
V_DD / 2
Figure 11
5. Maximum output swing voltage (VOL)
V_DD V_DD / 2
R_L
−
V_OL
+
• Maximum output swing voltage (VOL)
Test conditions:
VIN1 =
VDD
2
+ 0.1 V
VIN2 =
VDD
2
− 0.1 V
RL = 100 kΩ
V_IN1
V_IN2
Figure 12
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