ST TS272C User Manual
1
2
3
45
6
7
8
CC
+
-
-
+
-
+
CC
1 - Output 1
2 - Inverting Input 1
3 - Non-inverting Input 1
4 - V
5 - Non-inverting Input 2
6 - Inverting Input 2
7 - Output 2
8 - V
TS272C,I,M
HIGH PERFORMANCE
CMOS DUAL OPERATIONAL AMPLIFIERS
■ OUTPUT VOLTAGE CAN SWING TO
GROUND
■ EXCELLENT PHASE MARGIN ON
CAPACITIVE LOADS
■ GAIN BANDWIDTH PRODUCT: 3.5MHz
■ STABLE AN D LOW OFFSET VOLTAGE
■ THREE INPUT OFFSET VOLTAGE
SELECTIONS
DESCRIPTION
The TS272 devices are low cost, dual operational
amplifiers designed to o perate with single or dua l
supplies. These operat iona l amplifiers us e the ST
silicon gate CMOS process allowing an excellent
consumption-speed ratio. These series are ideally
suited for low consumption applications.
Three power consumpt ions are av ailable a llowing
to have always the best consumption-speed ratio:
❑ I
= 10µA/amp.: TS27L2 (very low power)
CC
❑ I
= 150µA/amp.: TS27M2 (low power)
CC
❑ I
= 1mA/amp.: TS272 (standard)
CC
These CMOS amplifiers offer very high input impedance and extremely low input currents. The
major advantage versus JFET devices is the very
low input currents drift with temperature (see figure 2 ).
N
DIP8
(Plastic Package)
D
SO8
(Plastic Micropackage)
P
TSSOP8
(Thin Shrink Small Outline Package)
PIN CONNECTIONS (top view)
ORDER CODE
Part Number Temperature Range
TS272C/AC/BC 0°C, +70°C
TS272I/AI/BI -40°C, +125°C
TS272M/AM/BM -55°C, +125°C
Example : TS272ACN
N = Dual in Line Package (DIP)
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
P = Thin Shrink Small Outline Package (TSSOP) - only available
in Tape & Reel (PT)
November 2001
Package
NDP
•••
•••
•••
1/9
TS272C,I,M
E
E
Input
differential
Second
stage
Output
stage
Output
CC
V
CC
V
Current
source
x I
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter TS272C/AC/BC TS272I/AI/BI TS272M/AM/BM Unit
+
V
T
T
1. All values, except differential voltage are with respect to network ground terminal.
2. Dif ferential vo l ta ges are the non-i nverting inpu t terminal with respect to the inv erting input terminal.
3. The magnitude of the in put and the output voltages mu st never exceed t he m agnitude of the positive supply voltage.
Supply Voltage
CC
V
id Differential Input Voltage
V
Input Voltage
i
I
Output Current for V
o
I
Input Current ±5 mA
in
Operating Free-Air Temperature Range 0 to +70 -40 to +125 -55 to +125 °C
oper
Storage Temperature Range -65 to +150 °C
stg
1)
2)
3)
+
≥ 15V
CC
18 V
±18 V
-0.3 to 18 V
±30 mA
OPERATING CONDITIONS
Symbol Parameter Value Unit
+
V
V
Supply Voltage 3 to 16 V
CC
Common Mode Input Voltage Range
icm
0 to V
CC
+
- 1.5
V
2/9
SCHEMATIC DIAGRAM (for 1/2 TS272)
TS272C,I,M
15
T
12
T
10
T
11
T
8
T
6
T
Output
7
T
16
T
14
T
13
T
9
T
R1
C1
Input
2
T
5
CC
V
T
1
T
4
T
3
T
27
T
26
T
25
T
24
T
Input
28
T
23
T
2
R
T
17 18
T
19
T
29
T
22
T
21
T
20
T
CC
V
3/9
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