MINI ANALOG SERIES 0.7
A Rail-to-Rail CMOS COMPARATOR
S-89530A/89531A Series
Rev.4.0_00
8 Seiko Instruments Inc.
3. Common-mode input signal rejection rate, common-mode input voltage range
+
−
V
OUT
V
DD
V
IN1
V
IN2
Figure 8
y Common-mode input signal rejection ratio (CMRR)
The common-mode input signal rejection ratio,
CMRR, can be calculated by the following
expression, with the offset voltage (V
IO
) defined as
V
IN1
minus V
IN2
at which V
OUT
is changed by changing
V
IN1
.
Measurement conditions:
When V
IN2
= V
CMR
(max.): V
IO
= V
IO1
When V
IN2
= V
CMR
(min.): V
IO
= V
IO2
CMRR = 20log
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
−
−
IO2IO1
CMRCMR
VV
(min.)V(max.)V
y Common-mode input voltage range (V
CMR
)
The common-mode input voltage range is the range
of V
IN2
within which V
OUT
satisfies the common mode
input signal rejection ratio specification.
4. Maximum output swing voltage
V
IN2
+
−
V
DD
/2
V
OH
V
DD
V
IN1
R
L
Figure 9
y Maximum output swing voltage (V
OH
)
Measurement conditions:
V0.1
2
V
V
DD
IN1
−=
V0.1
2
V
V
DD
IN2
+=
R
L
= 1 MΩ
V
IN2
+
−
V
DD
/2
V
OL
V
DD
V
IN1
R
L
Figure 10
y Maximum output swing voltage (V
OL
)
Measurement conditions:
V0.1
2
V
V
DD
IN1
+=
V0.1
2
V
V
DD
IN2
−=
R
L
= 1 MΩ
