TS2904
Dual Operational Amplifier
Pin assignment:
1. Output
2. Input A (-)
3. Input A (+)
4. Gnd
5. Input B (+)
6. Input B (-)
7. Output B
8. Vcc
Preliminary
Supply Voltage Range 3V to 26V
Dual Channel Amplifier
General Description
Utilizing the circuit designs perfected for recently introduced Quad Operational Amplifiers, these dual operational
amplifiers have several distinct advantages over standard operational amplifier types in single supply applications. They
can operate at supply voltages as low as 3.0 Volts or as high as 26 Volts with quiescent currents about one fifth of those
associated with the LM741 (on a pet amplifier basis). The common mode input range includes the negative supply,
thereby eliminating the necessity for external biasing components in many applications.
The TS2904 is equivalent to one half of TS2902, and output voltage range also includes the negative supply voltage.
The TS2904 is offered in 8 pin SOP-8 and DIP-8 package.
Features
Short circuit protected outputs
True differential input stage
Single supply operation: 3V to 26V
Low input bias currents
Internally compensated
Common mode range extends to negative supply
Single and split supply operation
Similar performance to the popular MC1558
Block Diagram
Ordering Information
Part No.
TS2904CD
TS2904CS
Operating Temp.
o
-40 ~ +105 C
Package
DIP-8
SOP-8
Absolute Maximum Rating
Supply Voltage
Differential Input Voltage (note 1)
Input Common Mode Voltage Range (note 2)
Input Forward Current (note 3)
Output Short Circuit Duration
Power Dissipation @ Ta=25
o
C
o
Derate above 25 C
Vcc
V
IDR
V
ICR
Iif
Isc
1/Rθja
T
J
T
STG
26
26
-0.3 to 26
50
Continuous
570
5.7
0 ~ +125
-65 ~ +150
V
V
V
mA
mA
mW
mW/
o
C
o
o
Operating Junction Temperature Range
Storage Temperature Range
C
C
NOTE :
1. Split Power Supplies.
2. For supply. Voltages less than 26V for the TS2904 the absolute maximum input voltage is equal to the supply voltage.
3. This input current will only exist when the voltage is negative at any of the input leads. Normal output states will
reestablish when the input voltage returns to a voltage greater than -0.3V.
TS2904
1-6
2005/04 rev. A
Electrical Characteristics
(V
CC
= 5V, Ta=25
o
C; unless otherwise specified.)
Characteristics
Input Offset Voltage
V
CC
= 5.0V to 26V, V
IC
= 0V to Vcc -1.7 V, Vo= 1.4V, R
S
= 0Ω
T
LOW
≤
Ta
≤T
HIGH
Average Temperature Coefficient of Input Offset Voltage
Input Offset Current
T
LOW
≤
Ta
≤T
HIGH
Average Temperature Coefficient of input Offset Current
Input Bias Current
T
LOW
≤
Ta
≤T
HIGH
Input Common-Mode Voltage Range (Note1)
V
CC
= 26 V
V
CC
= 26 V, T
LOW
≤
Ta
≤T
HIGH
Differential Input Voltage Range
Large Signal Open-Loop Voltage Gain
R
L
= 2.0K, V
CC
=15V, For Large V
O
Swing,
T
LOW
≤
Ta
≤T
HIGH
Channel Separation
1.0 KHz to 20KHz
Common Mode Rejection Ratio
R
S
≤
10 kΩ
Power Supply Rejection Ratio
Output Voltage Range, RL = 2KΩ
Output Voltage -- High Limit
V
CC
= 26 V, R
L
= 2 kΩ
V
CC
= 26 V, R
L
= 10 kΩ
Output Voltage -- Low Limit
V
CC
= 5.0 V, R
L
= 10 kΩ
Output Source Current V
ID
=+1.0V,V
CC
=15V
Output Sink Current
V
ID
= -1.0 V, V
CC
= 15 V
V
ID
= -1.0 V, V
O
= 200 mV
Output Short Circuit to Ground (Note 2)
Power Supply Current ,
V
CC
= 26V, V
O
= 0 V, R
L
=
∞
I
CC
--
1.5
3.0
mA
V
CC
= 5.0V, V
O
= 0 V, R
L
=
∞
--
0.7
1.2
Notes :
1. The input common mode voltage or either input signal voltage should not be allowed to go negative by more than
0.3 V. The upper end of the common mode voltage range is Vcc 17V, but either or both inputs can go to +26V.
2. Short circuits from the output to Vcc can cause excessive heating and eventual destruction. Destructive dissipation
can recruit from simultaneous shorts on all amplifiers.
I
OS
I
O-
10
12
--
20
50
40
--
--
60
mA
uA
mA
V
OL
I
O+
V
OH
26
27
--
20
--
28
5.0
40
--
--
20
--
mV
mA
V
--
CMRR
PSRR
V
OR
A
VOL
25
15
--
50
50
0
100
--
-120
70
100
--
--
--
--
--
--
3.3
dB
dB
dB
V
V/mV
V
IDR
V
ICR
0
0
--
--
--
--
24.3
24
V
CC
V
V
△
Iio/
△
T
Iio
△
Iio/
△
T
I
IB
Vio
--
--
--
--
--
--
--
--
2.0
--
7.0
5.0
--
10
45
50
5.0
7.0
--
50
150
--
-250
-500
uV/
o
C
nA
pA/
o
C
nA
mV
Symbol
Min
Typ
Max
Unit
TS2904
2-6
2005/04 rev. A
Circuit Description
The TS2904 made using two internally compensated, two-stage operational amplifiers. The first stage performs not
only the first stage gain function but also performs the level shifting and transconductance reduction functions. By
reducing the transconductance, a smaller compensation capacitor (only 5.0pF) can be employed, thus saving chip
area. Another feature of this input stage is that the input common mode range can include the negative supply or
ground, in single supply operation, without saturating either the input devices or the differential to single-ended
converter. The second stage consists of a standard current source load amplifier stage.
Each amplifier is biased from an internal-voltage regulator, and which has a low temperature coefficient thus giving
each amplifier good temperature characteristics as well as excellent power supply rejection.
TS2904
3-6
2005/04 rev. A
Circuit Description
TS2904
4-6
2005/04 rev. A
Electrical Characteristics Curve
TS2904
5-6
2005/04 rev. A
51单片机
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