ETC TS982

TS982
RAIL TO RAIL HIGH OUTPUT CURRENT
DUAL OPERATIONAL AMPLIFIER
■ Operating from Vcc=2.5V to 5.5V
■ 200mA output current on each amplifier
■ High dissipation package
■ Rail to Rail input and output
■ Unity-Gain Stable
DESCRIPTION
The TS982 is a dual operational amplifier able to
drive 200mA down to voltages as low as 2.7V.
The SO8 Exposed-Pad package allows high current output at high ambiant temperatures making it
a reliable solution for automotive and industrial applications.
The TS982 is stable with a unity gain.
DW
SO8 Exposed-Pad
(Plastic Micropackage)
APPLICATIONS
■ Hall Sensor Compensation Coil
■ Servo Amplifier
■ Motor Driver
■ Industrial
■ Automotive
PIN CONNECTIONS (top view)
ORDER CODE
Part
Number
TS982DW
TS982DWT
Temperature
Range
Package
-40°C, +125°C SO8 Exposed-Pad
Output1 1
8 VCC +
Inverting Input1 2
-
Non Inverting Input1 3
+
VCC - 4
7 Output2
-
6 Inverting Input2
+
5 Non Inverting Input2
DW = SO8 Exposed Pad available in Tray)
DWT = SO8 Exposed Pad available in Tape & Reel
Cross Section View Showing Exposed-Pad
This pad can be connected to a (-Vcc) copper area on the PCB
May 2003
1/15
TS982
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
Vi
Parameter
Supply voltage
1)
Value
Unit
6
V
-0.3v to VCC +0.3v
V
Toper
Operating Free Air Temperature Range
-40 to + 125
°C
Tstg
Storage Temperature
Input Voltage
-65 to +150
°C
Maximum Junction Temperature
150
°C
Rthja
Thermal Resistance Junction to Ambient2)
45
°C/W
Rthjc
Thermal Resistance Junction to Case
10
°C/W
ESD
ESD
ESD
Latch-up
Human Body Model (HBM)
Charge Device Model (CDM)
Machine Model (MM)
Latch-up Immunity (All pins)
Lead Temperature (soldering, 10sec)
2
1.5
200
200
250
kV
kV
V
mA
°C
Tj
Output Short-Circuit Duration
see note 3)
1. All voltage values are measured with respect to the ground pin.
2. With two sides, two planes PCB following EIA/JEDEC JESD51-7 standard.
3. Short-circuits can cause excessive heating. Destructive dissipation can result from a short-circuit on one or two amplifiers simultaneously.
OPERATING CONDITIONS
Symbol
Parameter
VCC
Supply Voltage
VICM
Common Mode Input Voltage Range
CL
2/15
Load Capacitor
RL < 100Ω
RL > 100Ω
Value
Unit
2.5 to 5.5
V
GND to VCC
V
400
100
pF
TS982
ELECTRICAL CHARACTERISTICS
VCC = +5V, VCC- = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
5.5
7.2
mA
5
mV
ICC
Supply Current
No input signal, no load
VIO
Input Offset Voltage (VICM = VCC/2)
1
Input Offset Voltage Drift
2
∆VIO
µV/°C
IIB
Input Bias Current
VICM = VCC/2
200
IIO
Input Offset Current
VICM = VCC/2
10
nA
4.4
4
V
VOH
High Level Output Voltage
RL = 16Ω
Iout = 200mA
VOL
Low Level Output Voltage
RL = 16Ω
Iout = 200mA
AVD
Large Signal Voltage Gain
RL = 16Ω
GBP
Gain Bandwith Product
RL = 32ohms
CMR
4.2
0.55
1
500
0.65
nA
V
95
dB
2.2
MHz
Common Mode Rejection Ratio
80
dB
SVR
Supply Voltage Rejection Ratio
95
dB
SR
Slew Rate, Unity Gain Inverting
RL = 16Ω
0.7
V/µs
Φm
Phase Margin at Unit Gain
RL = 16Ω, CL = 400pF
56
degrees
Gm
Gain Margin
RL = 16Ω, CL = 400pF
18
dB
en
Equivalent Input Noise Voltage
F = 1 kHz
17
nV
-----------Hz
Channel Separation
RL = 16Ω, F = 1kHz
100
dB
Crosstalk
1.35
0.45
3/15
TS982
ELECTRICAL CHARACTERISTICS
VCC = +3.3V, VCC- = 0V, Tamb = 25°C (unless otherwise specified)1)
Symbol
Parameter
Min.
Typ.
Max.
Unit
5.3
7.2
mA
5
mV
ICC
Supply Current
No input signal, no load
VIO
Input Offset Voltage (VICM = VCC/2)
1
Input Offset Voltage Drift
2
∆VIO
µV/°C
IIB
Input Bias Current
VICM = VCC/2
200
IIO
Input Offset Current
VICM = VCC/2
10
nA
2.85
2.3
V
VOH
High Level Output Voltage
RL = 16Ω
Iout = 200mA
VOL
Low Level Output Voltage
RL = 16Ω
Iout = 200mA
AVD
Large Signal Voltage Gain
RL = 16Ω
GBP
Gain Bandwith Product
RL = 32ohms
CMR
2.68
0.45
1
500
0.52
nA
V
92
dB
2
MHz
Common Mode Rejection Ratio
75
dB
SVR
Supply Voltage Rejection Ratio
95
dB
SR
Slew Rate, Unity Gain Inverting
RL = 16Ω
0.7
V/µs
Φm
Phase Margin at Unit Gain
RL = 16Ω, CL = 400pF
57
degrees
Gm
Gain Margin
RL = 16Ω, CL = 400pF
16
dB
en
Equivalent Input Noise Voltage
F = 1 kHz
17
nV
-----------Hz
Channel Separation
RL = 16Ω, F = 1kHz
100
dB
Crosstalk
1) All electrical values are guaranteed by correlation with measurements at 2.7V and 5V.
4/15
1.2
0.45
TS982
ELECTRICAL CHARACTERISTICS
VCC = +2.7V, VCC- = 0V, Tamb = 25°C (unless otherwise specified)1)
Symbol
Parameter
Min.
Typ.
Max.
Unit
ICC
Supply Current
No input signal, no load
5
7.2
mA
VIO
Input Offset Voltage (VICM = VCC/2
1
5
mV
Input Offset Voltage Drift
2
∆VIO
µV/°C
IIB
Input Bias Current
VICM = VCC/2
200
IIO
Input Offset Current
VICM = VCC/2
10
nA
2.15
1.7
V
VOH
High Level Output Voltage
RL = 16Ω
Iout = 200mA
VOL
Low Level Output Voltage
RL = 16Ω
Iout = 200mA
AVD
Large Signal Voltage Gain
RL = 16Ω
GBP
Gain Bandwith Product
RL = 32ohms
CMR
1.97
0.35
1
500
0.45
nA
V
90
dB
2
MHz
Common Mode Rejection Ratio
75
dB
SVR
Supply Voltage Rejection Ratio
Vcc = TBD to TBD V
95
dB
SR
Slew Rate, Unity Gain Inverting
RL = 16Ω
0.65
V/µs
Φm
Phase Margin at Unit Gain
RL = 16Ω, CL = 400pF
57
degrees
Gm
Gain Margin
RL = 16Ω, CL = 400pF
16
dB
en
Equivalent Input Noise Voltage
F = 1 kHz
17
nV
-----------Hz
Channel Separation
RL = 16Ω, F = 1kHz
100
dB
Crosstalk
1.2
0.42
1) All electrical values are guaranteed by correlation with measurements at 2.7V and 5V.
5/15
TS982
Current Consumption vs Supply Voltage
No load
Voltage Drop vs Output Sourcing Current
Ta=125 C
Vcc = 2.7V to 5V
Vicm = Vcc/2
Vid = 100mV
Output Sourcing
Testboard PCB
Ta=25 C
Ta=-40 C
Voltage Drop vs Output Sinking Current
Voltage Drop vs Supply Voltage (Sourcing))
Vicm = Vcc/2
Vid = 100mV
Isource = 200mA
Testboard
Vcc = 2.7V to 5V
Vicm = Vcc/2
Vid = 100mV
Output Sinking
Testboard PCB
Voltage Drop vs Supply Voltage (Sinking)
Voltage Drop vs Temperature (Iout=50mA)
Vicm = Vcc/2
Vid = 100mV
Isink = 200mA
Testboard
Vcc = 5V
Vicm = Vcc/2
Vid = 100mV
Iout= 50mA
6/15
TS982
Voltage Drop vs Temperature (Iout=100mA)
Voltage Drop vs Temperature (Iout=200mA)
Vcc = 5V
Vicm = Vcc/2
Vid = 100mV
Iout= 200mA
Vcc = 5V
Vicm = Vcc/2
Vid = 100mV
Iout= 100mA
60
Vcc = 2.7V
RL = 8Ω
Tamb = 25°C
60
0
Gain (dB)
80
-20
Phase
80
60
0
40
20
-20
0
0
-40
0.1
1
10
100
Frequency (kHz)
1000
10000
-40
0.1
-20
Open Loop Gain and Phase vs Frequency
1
10
100
Frequency (kHz)
1000
10000
Gain
60
Vcc = 2.7V
RL = 16Ω
Tamb = 25°C
180
80
160
140
Vcc = 5V
RL = 16Ω
Tamb = 25°C
Gain
60
80
60
0
40
20
-20
Gain (dB)
Phase
Phase (Deg)
Gain (dB)
20
100
40
1
10
100
Frequency (kHz)
1000
10000
-20
140
20
100
Phase
80
60
0
40
20
-20
0
0
-40
0.1
160
120
120
40
-20
Open Loop Gain and Phase vs Frequency
180
80
140
100
20
40
20
160
120
40
Phase (Deg)
Gain (dB)
60
140
100
Phase
180
Vcc = 5V
RL = 8Ω
Tamb = 25°C
Gain
160
120
40
20
80
180
Gain
Phase (Deg)
80
Open Loop Gain and Phase vs Frequency
Phase (Deg)
Open Loop Gain and Phase vs Frequency
-40
0.1
1
10
100
Frequency (kHz)
1000
10000
-20
7/15
TS982
Open Loop Gain and Phase vs Frequency
Open Loop Gain and Phase vs Frequency
180
140
Vcc = 5V
RL = 32Ω
Tamb = 25°C
Gain
60
20
100
Phase
80
60
0
40
20
100
Phase
80
60
0
40
20
-20
40
20
-20
0
-40
0.1
1
10
100
Frequency (kHz)
1000
10000
0
-20
-40
0.1
Open Loop Gain and Phase vs Frequency
1
10
100
Frequency (kHz)
1000
10000
Vcc = 2.7V
RL = 600Ω
Tamb = 25°C
Gain
60
180
80
160
140
Gain
60
Vcc = 5V
RL = 600Ω
Tamb = 25°C
60
0
Gain (dB)
80
Phase
Phase (Deg)
Gain (dB)
20
100
40
20
20
80
Phase
60
40
20
-20
0
0
-40
0.1
1
10
100
Frequency (kHz)
1000
10000
-40
0.1
-20
Open Loop Gain and Phase vs Frequency
1
10
100
1000
Frequency (kHz)
10000
Vcc = 2.7V
RL = 5kΩ
Tamb = 25°C
Gain
60
180
80
160
140
Gain
60
Vcc = 5V
RL = 5kΩ
Tamb = 25°C
Phase
60
0
40
20
-20
Gain (dB)
80
Phase (Deg)
Gain (dB)
20
100
40
8/15
1
10
100
Frequency (kHz)
1000
10000
-20
140
20
100
80
Phase
60
0
40
20
-20
0
0
-40
0.1
160
120
120
40
-20
Open Loop Gain and Phase vs Frequency
180
80
140
100
0
40
-20
160
120
120
40
-20
Open Loop Gain and Phase vs Frequency
180
80
140
120
Gain (dB)
40
Phase (Deg)
Gain (dB)
120
160
Phase (Deg)
60
180
80
160
Phase (Deg)
Vcc = 2.7V
RL = 32Ω
Tamb = 25°C
Gain
-40
0.1
1
10
100
1000
Frequency (kHz)
10000
-20
Phase (Deg)
80
TS982
Phase Margin vs Supply Voltage
Gain Margin vs Supply Voltage
50
50
RL=8Ω
Tamb=25°C
RL=8Ω
Tamb=25°C
40
Gain Margin (dB)
Phase Margin (Deg)
40
30
CL= 0 to 500pF
20
10
30
CL=0 to 500pF
20
10
0
2.0
2.5
3.0
3.5
4.0
Power Supply Voltage (V)
4.5
0
2.0
5.0
Phase Margin vs Power Supply Voltage
2.5
3.0
3.5
4.0
Power Supply Voltage (V)
4.5
5.0
Gain Margin vs Power Supply Voltage
50
50
RL=16Ω
Tamb=25°C
40
30
Gain Margin (dB)
Phase Margin (Deg)
40
CL= 0 to 500pF
20
10
30
20
CL=0 to 500pF
10
RL=16Ω
Tamb=25°C
0
2.0
2.5
3.0
3.5
4.0
Power Supply Voltage (V)
4.5
0
2.0
5.0
Phase Margin vs Power Supply Voltage
2.5
3.0
3.5
4.0
Power Supply Voltage (V)
4.5
5.0
Gain Margin vs Power Supply Voltage
50
50
RL=32Ω
Tamb=25°C
40
CL= 0 to 500pF
Gain Margin (dB)
Phase Margin (Deg)
40
30
20
10
30
20
CL=0 to 500pF
10
RL=32Ω
Tamb=25°C
0
2.0
2.5
3.0
3.5
4.0
Power Supply Voltage (V)
4.5
5.0
0
2.0
2.5
3.0
3.5
4.0
Power Supply Voltage (V)
4.5
5.0
9/15
TS982
Phase Margin vs Power Supply Voltage
Gain Margin vs Power Supply Voltage
70
20
CL=0pF
50
CL=0pF
Gain Margin (dB)
Phase Margin (Deg)
60
CL=500pF
40
30
20
10
CL=100pF
CL=200pF
10
CL=500pF
RL=600Ω
Tamb=25°C
0
2.0
2.5
RL=600Ω
Tamb=25°C
3.0
3.5
4.0
Power Supply Voltage (V)
4.5
0
2.0
5.0
Phase Margin vs Power Supply Voltage
2.5
3.0
3.5
4.0
Power Supply Voltage (V)
20
60
CL=0pF
50
CL=0pF
40
CL=300pF
Gain Margin (dB)
Phase Margin (Deg)
5.0
Gain Margin vs Power Supply Voltage
70
CL=500pF
30
20
10
CL=100pF
CL=200pF
10
CL=500pF
RL=5kΩ
Tamb=25°C
RL=5kΩ
Tamb=25°C
0
2.0
2.5
3.0
3.5
4.0
Power Supply Voltage (V)
4.5
Distortion vs Output Voltage
RL = 2Ω
F = 1kHz
Av = +1
BW < 80kHz
Tamb = 25°C
Vcc=2.7V
Vcc=3.3V
10/15
4.5
5.0
0
2.0
2.5
3.0
3.5
4.0
Power Supply Voltage (V)
4.5
Distortion vs Output Voltage
Vcc=5V
RL = 4Ω
F = 1kHz
Av = +1
BW < 80kHz
Tamb = 25°C
Vcc=2.7V
Vcc=3.3V
Vcc=5V
5.0
TS982
Distortion vs Output Voltage
RL = 8Ω
F = 1kHz
Av = +1
BW < 80kHz
Tamb = 25°C
Distortion vs Output Voltage
Vcc=2.7V
RL = 16Ω
F = 1kHz
Av = +1
BW < 80kHz
Tamb = 25°C
Vcc=5V
Vcc=5V
Vcc=3.3V
Vcc=3.3V
Crosstalk vs Frequency
Crosstalk vs Frequency
100
100
80
ChB to ChA
80
ChA to ChB
60
RL=8Ω
Vcc=5V
Pout=100mW
Av=-1
Bw < 125kHz
Tamb=25°C
40
20
20
100
Crosstalk (dB)
Crosstalk (dB)
Vcc=2.7V
ChA to ChB
60
Crosstalk vs Frequency
RL=16Ω
Vcc=5V
Pout=90mW
Av=-1
Bw < 125kHz
Tamb=25°C
40
20
20
10000 20k
1000
Frequency (Hz)
ChB to ChA
100
1000
Frequency (Hz)
10000 20k
Crosstalk vs Frequency
120
100
100
ChB to ChA & ChA to Chb
60
RL=32Ω
Vcc=5V
Pout=60mW
Av=-1
Bw < 125kHz
Tamb=25°C
40
20
20
100
1000
Frequency (Hz)
10000 20k
Crosstalk (dB)
Crosstalk (dB)
80
80
ChB to ChA & ChA to Chb
60
RL=600Ω
Vcc=5V
Vout=1.4Vrms
Av=-1
Bw < 125kHz
Tamb=25°C
40
20
0
20
100
1000
Frequency (Hz)
10000 20k
11/15
TS982
Equivalent Input Noise Voltage vs Frequency
120
Crosstalk (dB)
100
80
ChB to ChA & ChA to Chb
60
RL=5kΩ
Vcc=5V
Vout=1.5Vrms
Av=-1
Bw < 125kHz
Tamb=25°C
40
20
0
20
100
1000
Frequency (Hz)
10000 20k
Power Supply Rejection Ratio vs Frequency
Vcc=5V
Vcc=3.3V
Gain = +1
pins 3 & 5 tied to Vcc/2
RL >= 8Ω
Vin=70mVrms
Vripple on pin8=100mVpp
Tamb=25°C
20
12/15
Vcc=2.7V
Equivalent Input Noise Voltage (nv/ Hz)
Crosstalk vs Frequency
25
Vcc=5V
Rs=100Ω
Tamb=25°C
20
15
10
5
0.02
0.1
1
Frequency (kHz)
10
TS982
APPLICATION INFORMATION
Exposed Pad Electrical Connection
Exposed Pad Package Description
In the SO8Epad package, the silicon die is mounted on the thermal pad (see the figure above). The
silicon substrate is not directly connected to the
pad because of the glue. Therefore, the copper
area of the Exposed Pad must be connected to
the substrate voltage (Vcc-) pin4.
The dual operational amplifier TS982 is housed in
an SO8 Exposed-Pad plastic package. As shown
in the figure below, the die is mounted and glued
on a leadframe. This leadframe is exposed as a
thermal pad on the underside of the package. The
thermal contact is direct with the die and therefore,
offers an excellent thermal performance in comparison with usual SO packages. The thermal
contact between the die and the Exposed Pad is
characterized using the parameter Rthjc .
Thermal Management Benefits
A good thermal design is important to maintain the
temperature of the silicon junction below
Tj=150°C as given in the Absolute Maximum
Ratings and also to maintain the operating power
level.
Another effect of temperature is that the life expectancy of an integrated circuit decreases exponentially at extended high temperature operation.
Using one rule-of-thumb, the chip failure rates
double for every 10 to 20°C. This demonstrates
that reducing the junction temperature is also important to improve the reliability of the amplifier.
Thanks to the high dissipation capability of the
SO8 Epad package, the dual OpAmpTS982 allows lower junction temperature at high current
applications in high ambient temperatures.
As 90% of the heat is removed through the pad,
the thermal dissipation of the circuit is directly
linked to the copper area soldered to the pad. In
other words, the Rthja depends on the copper area
and the number of layers of the printed circuit
board under the pad.
TS982 Testboard layout: 6 cm2 of copper topside:
Thermal Management Guideline
The following guidelines are a simple procedure to
determine the PCB you should use in order to get
the best from the SO8 Exposed Pad package:
❑ The first step is to determine the total power Ptotal to be dissipated by the IC.
Ptotal = Iccx Vcc + Pamp1 +
Vdrop2xIout2
x
Pamp2 Iout1+
Iccx Vcc is the DC power needed by the TS982 for
operating with no load. You could refer to the
curve ’Current Consumption vs Supply Voltage’ to
determine Icc versus Vcc and versus temperature.
Pamp1 is the power dissipated by the 1st operational amplifier to output a signal. If the output signal can be assimilated to a DC signal, you could
simply calculate the dissipated power using the
Voltage drop curves versus output current, supply
voltage, temperature.
13/15
TS982
Pamp2 is the power dissipated by the second operational amplifier.
❑ Specify the maximum operating temperature, (Ta)of the TS982.
❑ Specify the maximum junction temperature
(Tj) at the maximum output power. As discussed above, Tj must be below 150°C
and as low as possible for reliability considerations.
❑ The maximum thermal resistance between
junction and ambient Rthja is then:
Rthja = (Tj-Ta)/Ptotal
Different PCBs can give the right Rthja for one application. The following curve gives the Rthja of
the SO8Epad versus the copper area of a top side
PCB.
Rthja of the TS982 vs Top Side Copper Area
The ultimate Rthja of the package on a 4 layers
PCB under natural convection conditions, is 45°C/
W by using two power planes and metallized
holes.
Parallel Operation
Using the two amplifiers of the TS982 in parallel
mode allows higher output current: 400 mA.
Parallel Operation: 400mA Output Current
10K
10K
Input
-
400 mA Output Current
TS981-1
+
Load
TS981-2
+
14/15
TS982
PACKAGE MECHANICAL DATA
8 PINS - PLASTIC MICROPACKAGE (SO Exposed-Pad)
Millimeters
Inches
Dim.
Min.
A
A1
A2
B
C
D
D1
E
E1
e
H
h
L
k
ddd
Typ.
1.350
0.000
1.100
0.330
0.190
4.800
Max.
Min.
1.750
0.250
1.650
0.510
0.250
5.000
0.053
0.001
0.043
0.013
0.007
0.189
4.000
0.150
3.10
3.800
Max.
0.069
0.010
0.065
0.020
0.010
0.197
0.122
2.41
1.270
5.800
0.250
0.400
0d
Typ.
0.157
0.095
0.050
6.200
0.500
1.270
8d
0.100
0.228
0.010
0.016
0d
0.244
0.020
0.050
8d
0.004
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
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15/15