STMicroelectronics TL084 Operation Manual
General purpose JFET quad operational amplifier
Inverting Input 2
Non-inverting Input 2
Non-inverting Input 1
CC
V
-
CC
V
1
2
3
4
8
5
6
7
9
10
11
12
13
14
+
Output 3
Output 4
Non-inverting Input 4
Inverting Input 4
Non-inverting Input 3
Inverting Input 3
-
+
+
-
+
-
+
Output 1
Inverting Input 1
Output 2
Features
■ Wide common-mode (up to V
differential voltage range
■ Low input bias and offset current
■ Output short-circuit protection
■ High input impedance JFET input stage
■ Internal frequency compensation
■ Latch up free operation
■ High slew rate: 16V/µs (typ)
Description
The TL084, TL084A and TL084B are high-speed
JFET input quad operational amplifiers
incorporating well matched, high voltage JFET
and bipolar transistors in a monolithic integrated
circuit.
The devices feature high slew rates, low input
bias and offset currents, and low offset voltage
temperature coefficient.
CC
+
) and
TL084
N
DIP14
(Plastic package)
D
TSSOP-14
(Thin shrink small outline package)
D
SO-14
(Plastic micropackage)
Pin connections
(Top view)
July 2007 Rev 2 1/16
www.st.com
16
Schematic diagram TL084
1 Schematic diagram
Figure 1. Circuit schematics (for each amplifier)
V
CC
Non-inverting
input
Inverting
input
V
CC
1.3k
35k
1.3k
35k
30k
100
100
100
Ω
Ω
Ω
200
8.2k
Ω
Output
2/16
TL084 Absolute maximum ratings and operating conditions
2 Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings
Value
Symbol Parameter
Unit
TL084M, AM, BM TL084I, AI, BI TL084C, AC, BC
(4) (5)
(2)
(1)
(8)
(3)
(7)
(6)
(9)
CC
+
and V
CC
±18 V
±15 V
±30 V
105
°C/W
80
100
31
°C/W
33
32
Infinite
1000
150
1500
-
.
V
Supply voltage
CC
V
Input voltage
i
Differential input voltage
V
id
Thermal resistance junction to
ambient
R
thja
SO-14
DIP14
TSSOP14
Thermal resistance junction to
(4) (5)
case
R
thjc
SO-14
DIP14
TSSOP14
P
Power dissipation 680 mW
tot
Output short-circuit duration
T
T
Operating free-air temperature range -55 to +125 -40 to +105 0 to +70 °C
oper
Storage temperature range -65 to +150 °C
stg
HBM: human body model
ESD
CDM: charged device model
1. All voltage values, except differential voltage, are with respect to the zero reference level (ground) of the supply voltages
where the zero reference level is the midpoint between V
2. The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 volts, whichever is less.
3. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal.
4. Short-circuits can cause excessive heating and destructive dissipation.
5. Rth are typical values.
6. The output may be shorted to ground or to either supply. Temperature and/or supply voltages must be limited to ensure
that the dissipation rating is not exceeded.
7. Human body model: 100pF discharged through a 1.5kΩ resistor between two pins of the device, done for all couples of pin
combinations with other pins floating.
8. Machine model: a 200pF cap is charged to the specified voltage, then discharged directly between two pins of the device
with no external series resistor (internal resistor < 5Ω), done for all couples of pin combinations with other pins floating.
9. Charged device model: all pins plus package are charged together to the specified voltage and then discharged directly to
the ground.
Table 2. Operating conditions
VMM: machine model
Symbol Parameter TL084M, AM, BM TL084I, AI, BI TL084C, AC, BC Unit
V
T
oper
Supply voltage range 6 to 36 V
CC
Operating free-air temperature range -55 to +125 -40 to +105 0 to +70 °C
3/16
Electrical characteristics TL084
3 Electrical characteristics
Table 3. VCC = ±15V, T
= +25°C (unless otherwise specified)
amb
Symbol Parameter
Input offset voltage (Rs = 50Ω)
T
= +25°C TL084
amb
TL084A
V
io
≤ T
T
min
amb
≤ T
max
TL084B
TL084
TL084A
TL084B
DV
Input offset voltage drift 10 10 μV/°C
io
Input offset current
I
io
I
ib
= +25°C
T
amb
T
≤ T
amb
≤ T
min
Input bias current
T
= +25°C
amb
T
≤ T
amb
≤ T
min
max
(1)
max
Large signal voltage gain (RL = 2kΩ, Vo =±10V)
A
vd
T
T
amb
min
= +25°C
≤ T
amb
≤ T
max
Supply voltage rejection ratio (R
SVR
T
T
amb
min
= +25°C
≤ T
amb
≤ T
max
Supply current, no load
I
CC
V
icm
= +25°C
T
amb
≤ T
T
min
amb
≤ T
max
Input common mode voltage range
Common mode rejection ratio (RS = 50Ω)
CMR
T
T
amb
min
= +25°C
≤ T
amb
≤ T
max
Output short-circuit current
I
os
T
T
amb
min
= +25°C
≤ T
amb
≤ T
max
Output voltage swing
= +25°C RL = 2kΩ
T
±V
opp
SR
amb
T
≤ T
≤ T
min
amb
Slew rate (T
= 10V, RL = 2kΩ, CL = 100pF, unity gain
V
in
amb
RL = 2kΩ
max
= +25°C)
= 50Ω)
S
RL = 10kΩ
RL = 10kΩ
TL084I,M,AC,AI,AM,
BC,BI,BM
TL084C
Min. Typ. Max. Min. Typ. Max.
3
10
3
1
6
3
13
310
13
7
5
5100
4
20 200
20
5 100
4
30 200
20
5025200 2515200
80
86 70
80
1.4 2.5
±11 +15
-12
80
86 70
80
10
40 60
10
10
12
12
13.5
10
12
2.5
60
70
±11 +15
70
10
10
10
12
10
12
86 dB
1.4 2.5
2.5
-12
86
40 60
60
12
13.5
816 816 V/μs
Unit
mV
pA
nA
pA
nA
V/mV
mA
V
dB
mA
V
4/16
TL084 Electrical characteristics
Table 3. VCC = ±15V, T
= +25°C (unless otherwise specified) (continued)
amb
TL084I,M,AC,AI,AM,
Symbol Parameter
BC,BI,BM
Min. Typ. Max. Min. Typ. Max.
t
r
K
ov
GBP
R
THD
e
n
Rise time (T
Vin = 20mV, RL = 2kΩ, CL = 100pF, unity gain
Overshoot (T
Vin = 20mV, RL = 2kΩ, CL = 100pF, unity gain
Gain bandwidth product (T
Vin = 10mV, RL = 2kΩ, CL = 100pF, f= 100kHz
Input resistance 10
i
Total harmonic distortion (T
f= 1kHz, RL = 2kΩ,CL = 100pF, Av = 20dB,
= 2Vpp)
V
o
Equivalent input noise voltage
= 100Ω, f = 1KHz
R
S
= +25°C)
amb
amb
= +25°C)
= +25°C)
amb
amb
0.1 0.1 μs
10 10 %
2.5 4 2.5 4 MHz
12
= +25°C,
0.01 0.01 %
15 15
∅m Phase margin 45 45
Vo1/V
Channel separation
o2
Av = 100
120 120 dB
TL084C
12
10
Unit
Ω
nV
----------- Hz
degrees
1. The input bias currents are junction leakage currents which approximately double for every 10°C increase in the junction
temperature.
5/16
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