S-19611AB0H-K8T2U Datasheet, PDF (10/20 Pages) Seiko Instruments Inc – LOW INPUT OFFSET VOLTAGE CMOS OPERATIONAL AMPLIFIER

MINI ANALOG SERIES FOR AUTOMOTIVE 105°C OPERATION LOW INPUT OFFSET VOLTAGE CMOS OPERATIONAL AMPLIFIER
S-19611A
Rev.1.0_01
8. Voltage gain
R_S
R_S
R_F
C_F
V_DD
R_F
−
D.U.T
+
C_F
R_L
V_CMR = V_DD / 2
V_DD / 2
V_DDN
+
NULL
−
V_SSN
V_M
• Voltage gain (open loop) (AVOL)
The voltage gain (AVOL) can be calculated by the
following expression, with VOUT measured at
each VM.
V_OUT
Test conditions:
VM = VDD − 0.1 V: VM = VM1, VOUT = VOUT1
VM = 0.1 V: VM = VM2, VOUT = VOUT2
 ^{AVOL = 20 log}
VM1 − VM2
VOUT1 − VOUT2
× ^RF_R⁺_S^RS_{}
RL = 10 kΩ
Figure 10 Test Circuit 8
9. Slew rate
Measured by the voltage follower circuit.
V_IN(+)
V_DD
V_SS
(= 0 V)
V_OUT
(= V_IN(－))
t_R = t_F = 20 ns (V_SS to V_DD)
t_THL
V_DD × 0.9
t_TLH
V_DD × 0.1
• Slew rate (SR)
When falling
SR
=
V_DD × 0.8
t _THL
When rising
SR
=
V_DD × 0.8
t _TLH
Figure 11
10