Datasheet
μPC271, 311
High Performance Comparator
DESCRIPTION
R03DS0151EJ0100
Rev.1.00
2019.10.1
The µPC271 and µPC311 are high-performance general-purpose comparators that have the same input
characteristics as general-purpose operational amplifiers and can directly drive standard logic circuits such as
TTL, CMOS, and HNIL. Its power supply voltage range is flexible whereby it exhibits excellent characteristics
not only in a 5 V single power supply but also in ± 15 V power supply which is equivalent to an operational
amplifier.
These products are equipped with a strobe terminal and input offset adjustment terminals, thus they can be
widely applied to various voltage comparison circuits.
Depending on the operating ambient temperature, the µPC271 is suitable for communication application while
the µPC311 is suitable for general-purpose usage.
FEATURES
Input Offset Voltage
±2 mV (TYP.)
Input Bias Current
100 nA (TYP.)
Pulse Response Time
200 ns (TYP.)
Equipped with a Strobe Terminal, ideal for interfacing with logic circuits.
Two output circuit formats are possible. (open collector, emitter follower)
Large output current capacity to directly drive the LEDs and lamps.
ORDERING INFORMATION
Ordering Name
μPC271G2-A
μPC311G2-A
Package
8-pin plastic SOP ( 5.72 mm ( 225 mil ))
8-pin plastic SOP ( 5.72 mm ( 225 mil))
EQUIVALENT CIRCUIT
PIN CONFIGURATION (Top View)
8
V
+
BALANCE
R
1
R
3
R
4
5 300 1.3k 1.3k
Q
5
R
5
100
R
9
R
10
800 800
µPC271G2, μPC311G2
Q
12
Q
13
Q
23
Q
21
Q
17
Q
16
R
19
300
Q
18
R
20
5.0k
D
3
R
21
200
R
22
600
R
23
4
7
Q
24
OUT
BALANCE/
STROBE 6 300
R
2
Q
3
Q
4
R
6
3.7k
R
7
3.7k
Q
9
Q
10
R
12
3.0k
Q
14
D
1
GND 1
I
N
I
I
V
-
2
3
4
+
-
8 V
+
7 OUT
6 BALANCE/
STROBE
5 BALANCE
Q
6
Q
7
2
R
13
250
Q
11
Q
15
R
11
340
R
15
1.3k
R
16
900
R
17
800
I
N
I
I
Q
1
Q
2
Q
22
Q
8
R
8
780
Q
19
1
3
GND
R
14
1.3k R
18
D
2
5.4k Q
20
4
V
-
R03DS0151EJ0100 Rev.1.00
2019.10.1
Page 1 of 8
UPC271, 311
ABSOLUTE MAXIMUM RATING (T
A
= 25
C)
PARAMETER
Power Supply Voltage
Note1
Differential Input Voltage
Input Voltage
Note2
Output to Negative Supply Voltage
Note3
Ground to Negative Supply Voltage
Note3
Total Power Dissipation
Note4
Output Short Circuit Duration
Note5
Operating Ambient Temperature
Storage Temperature
SYMBOL
V
+
- V
-
V
ID
V
I
V
O
– V
-
V
GND
– V
-
P
T
T
A
T
stg
μPC271G2
μPC311G2
-0.3 to +36
±30
-
-0.3 to V
+
+0.3
V
-0.3 to +40
-0.3 to +30
440
10
-40 to +85
-55 to +125
-20 to +80
UNIT
V
V
V
V
V
mW
s
C
C
[Note] 1. Note that reverse connections of the power supply may damage the ICs.
2. The input terminal must be applied within the input voltage range to avoid deterioration or damaging the device
characteristic. Do not exceed the ratings including during transient state such as ON/OFF, etc. The Comparator
input voltage must operate within the electrical characteristics range of input common-mode voltage.
3. The output terminal and GND terminal must be apply within the output voltage range to avoid deteriorating or
damaging the device characteristic. The GND terminal must be less than V
+
. Do not exceed the ratings including
during transient state such as ON/OFF, etc.
4. This is the value at T
A
≤ +25
C.
De-rate value at -4.4 mW/C when T
A
> 25
C.
5. Pay attention to output terminal current and GND terminal current. Please use the total loss and the de-rating
value from Note 4.
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Power Supply Voltage (Dual Supply)
Power Supply Voltage (V
-
= GND)
SYMBOL
V
±
V
+
MIN.
±4
+5
TYP.
MAX.
±16
+32
UNIT
V
V
ELECTRICAL CHARACTERISTICS (V
±
= ±15 V, T
A
= 25
C)
PARAMETER
Input Offset Voltage
Note6
Input Offset Current
Note6
Input Bias Current
Voltage Gain
Pulse Response Time
Output Saturation Voltage
Strobe Operating Current
Output Leakage Current
Positive Supply Current
Negative Supply Current
Input Offset Voltage
Note6
Input Offset Current
Note6
Input Bias Current
Common Mode Input
Voltage Range
Output Saturation Voltage
I
O LEAK
I
+
I
-
V
IO
I
IO
I
B
V
ICM
V
OL
+13.0
-14.5
+13.8
-14.7
0.23
0.4
V
OL
SYMBOL
V
IO
I
IO
I
B
A
V
MIN.
TYP.
±2.0
±6.0
100
200000
200
0.75
3.0
0.2
5.1
4.1
50
7.5
5.0
±10
±70
300
1.5
ns
V
mA
nA
mA
mA
mV
nA
nA
V
V
V
I
≥ 10 mV, V
O
= 35 V
I
O
= 0 A
I
O
= 0 A
V
+
- V
-
= 5 V to 30 V, R
S
≤ 50 kΩ,
T
A
= 0 to +70
C
V
+
- V
-
= 5 V to 30 V, T
A
= 0 to +70C
V
+
- V
-
= 5 V to 30 V, T
A
= 0 to +70C
MAX.
±7.5
±50
250
UNIT
mV
nA
nA
TEST CONDITION
V
+
- V
-
= 5 V to 30 V, R
S
≤ 50 kΩ
V
+
- V
-
= 5 V to 30 V
V
+
- V
-
= 5 V to 30 V
R
L
= 1.0 kΩ
Input step 100 mV,
Overdrive 5 mV
V
I
≤ -10 mV, I
O
= 50 mA
V
+
≥ 4.5 V, V
-
= 0 V, V
I
≤ -10 mV,
I
O
= 8 mA
[Note] 6. The difference of the input voltage and the input bias current when the load current is 1 mA and the output is
inverted.
R03DS0151EJ0100 Rev.1.00
2019.10.1
Page 2 of 8
UPC271, 311
CIRCUIT CONNECTION EXAMPLE (1)
● BALANCE terminal, BALANCE/STROBE terminal
Output goes high when
BLANCE/STROBE
端子をロウに
Common Mode Slew Rate
Strobe BALANCE/STROBE terminal is low. Set the
すると、出力はハイとなります。
コモン・モード・スルーレート増加法
ストローブ
Increase Method
ストローブ動½電流は
3 ~ 5 mA
to
strobe operating current between 3
の
5mA
間で設定してください。
V
+
2
3
+
-
6
7
8
+
-
Offset Adjustment
オフセット調整
V
+
3 kΩ
3 kΩ
2
3
5
+
-
6
8
7
2
TTL, CMOS
3
1 kΩ
6
5
7
Note
Use either pin 5 and pin 6 open (no offset adjustment), the offset adjustment circuit, the strobe circuit (pin 5
open) or the common mode slew rate increase method as shown in above figures. In other cases, malfunction,
characteristic deterioration or damage may occur.
CIRCUIT CONNECTION EXAMPLE (2)
● Output terminal, GND terminal
Open Collector Output
コレクタ出力
V
+
R
L
2
3
8
+
-
4
1
7
V
O
V
I (+)
V
I (-)
2
3
8
+
-
4
R
L
1
7
APPLICATION CIRCUIT EXAMPLE
Emitter Follower Output
エミッタ出力
V
+
Comparator with Hysteresis
V
+
V
RL
INPUT
V
O
-
+
GND
R
L
OUTPUT
R
2
R
1
V
-
V
REF
エミッタ出力ですので、
is low
When V
I (+)
> V
I (-)
, V
O
V
I
because emitter
はロウとなります。
(+)
> V
I (-)
で
V
O
follower output.
Threshold Voltage
スレッシュホールド電圧
V
TH (High)
≒
V
REF
+
V
TH (Low)
≒
V
REF
-
(V
RL
> V
REF
> V
OL
)
R
1
(V - V
REF
)
R
L
+ R
2
+ R
1 RL
R
1
R
1
+ R
2
(V
REF
- V
OL
)
R03DS0151EJ0100 Rev.1.00
2019.10.1
Page 3 of 8
UPC271, 311
TYPICAL PERFORMANCE CHARACTERISTICS (T
A
= 25
C,
TYP.) (Reference Value)
P
T
vs. T
A
(Absolute Maximum Rating)
600
Total Power Dissipation P
T
[mW]
500
400
300
200
100
0
0
20
40
60
80
100
Operating Ambient Temperature T
A
[C]
I
IO
vs. T
A
Equivalent Input Offset Voltage V
OS
[mV]
20
V
±
=
±15
V
100
227
C/W
100
80
60
40
20
0
-50
0
50
100
150
Operating Ambient Temperature T
A
[C]
V
OS
vs. R
S
5,6-8 pin short
I
B
vs. T
A
V
±
=
±15
V
Input Offset Current I
IO
[nA]
10
5,6-8 pin short
0
Input Bias Current I
B
[nA]
μPC271G2, 311G2
MAX.
10
TYP.
V
OS
= V
IO
+ R
S
½
I
IO
1
10k
100k
1M
Input Resistance R
S
[Ω]
V
ICM
vs. T
A
10M
-10
-20
-50
0
50
100
150
Operating Ambient Temperature T
A
[C]
I
B
vs. V
ID
Common Mode Input Voltage Range [V]
V
ICM +
V
ICM -
225
200
Input Bias Current I
B
[nA]
175
150
125
100
75
50
25
0
5,6-8 pin short
V
±
=
±15
V
V
+
Referred to
電源電圧基準
supply voltage
1
-0.5
-1.0
-1.5
0.8
0.6
0.4
+0.2
V
-
0.2
0
-0.2
-50
0
50
100
Operating Ambient Temperature T
A
[C]
-0.2
-16 -12 -8 -4
0
4
8
12
Differential Input Voltage V
ID
[V]
16
150
R03DS0151EJ0100 Rev.1.00
2019.10.1
Page 4 of 8
UPC271, 311
V
O
vs. V
ID
Input Voltage V
I
[mV] Output Voltage V
O
[V]
60
50
Output Voltage V
O
[V]
40
30
20
10
0
-1.0
-0.5
0
0.5
Differential Input Voltage V
ID
[mV]
Pulse Response Characteristics II
Input Voltage V
I
[mV] Output Voltage V
O
[V]
Input Voltage V
I
[mV] Output Voltage V
O
[V]
5
4
3
2
1
0
20
10
0
-10
-100
0
0.1 0.2 0.3 0.4 0.5 0.6
Time t [μs]
Overdrive 20 mV
5 mV
2 mV
5 mV
2 mV
Overdrive 20 mV
V
±
=
±15
V
V
+
V
I
-
+
V
-
+5 V
500 Ω
V
O
Pulse Response Characteristics I
Open collector
output
R
L
= 1 kΩ
V
RL
= 40 V
5
4
3
2
1
0
100
10
0
-10
-20
0
5 mV
20 mV
Overdrive 2 mV
5 mV
2mV
Overdrive 20 mV
V
±
=
±15
V
V
+
V
I
-
+
V
-
+5 V
500 Ω
V
O
Emitter follower
output
R
L
= 600 Ω
V
+
= 30 V
1.0
0.1 0.2 0.3 0.4 0.5 0.6
Time t [μs]
Pulse Response Characteristics III
15
10
5
0
-5
-10
-15
20
10
0
-10
-100
Overdrive
20 mV
5 mV
2 mV
V
±
=
±15
V
V
I
V
+
-
+
V
-
V
O
2 kΩ
Overdrive 20 mV
5 mV
2 mV
0 0.5 1 1.5 2 2.5 3 3.5 4
Time t [μs]
V
OL
vs. I
O
0.8
Output Saturation Voltage V
OL
[V]
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
10
20
30
40
Output Current I
O
[mA]
50
Pulse Response Characteristics IV
Input Voltage V
I
[mV] Output Voltage V
O
[V]
15
10
5
0
-5
-10
-15
100
10
0
-10
-20
V
±
=
±15
V
Overdrive 20 mV
V
I
-
+
V
+
V
O
2 kΩ
V
-
5 mV
2 mV
Overdrive 2 mV
5 mV
20 mV
0 0.5 1 1.5 2 2.5 3 3.5 4
Time t [μs]
R03DS0151EJ0100 Rev.1.00
2019.10.1
Page 5 of 8
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