Description
The GMA103A is a monolithic IC that includes one inde-
pendent op-amp and another op-amp for which the non in-
verting input is wired to a 2.5V fixed Voltage Reference.
This device is offering space and cost saving in many
applications like power supply management or data
acquisition systems.
GM 431
TYPICAL APPLICATIONS
Features
Low Input Offset Voltage : 0.5mV typ.
Low Supply Current : 350µA/op.
(@ V = 5V)
CC
Medium Bandwidth (unity gain) : 0.9MHz
Large Output Voltage Swing : 0V to (VCC - 1.5V)
Input Common Mode Voltage Range Includes
Ground
Wide Power Supply Range : 3 to 32V ±1.5 to
±16V
Fixed Output Voltage Reference 2.5V
0.4% and 1% Voltage Precision
Sink Current Capability : 1 to 100mA
Typical Output Impedance : 0.2W
1.5KV ESD Protection
GMA103A
DUAL OPERATIONAL AMPLIFIER AND VOLTAGE REFERENCE
GMA103A
www.gammamicro.com 1
Power Management
Revision 1, Jun. 2004
1
2
3
45
6
7
8
- +
+ -
OP1
OP2
VRef
PRELIMINARY
Application
Battery Charger
Switch Mode Power Supply
Linear Regulator
MARKING INFORMATION & PIN CONFIGURATIONS (Top View)
GMA103A
2
GMA103A
GMA103AS8T
GMA103AS8R
GMA103AD8T
SO-8
SO-8
DIP-8
100 Units / Tube
2,500 Units / Tape & Reel
60 Units / Tube
Package Shipping
Ordering Number
ORDERING INFORMATION
Output 2
V+
cc
Inverting Input 2
Non-Inverting Input 2
Output 1
Inverting Input 1 Non-Inverting Input 1
V-
cc
* For detail Ordering Number identification, please see last page.
A = Assembly Location
L = Wafer Lote
Y = Year
W W = Work Week
DIP - 8
1 2 34
5
6
7
8
SOP - 8 (SO-8)
1 2 34
5
6
7
8
GMA103A
ALYWW
GMA103A
ALYWW
Output 2
V+
cc
Inverting Input 2
Non-Inverting Input 2
Output 1
Inverting Input 1 Non-Inverting Input 1
V-
cc
ABSOLUTE MAXIMUM RATINGS
V
°C
Value Unit
Input Voltage
Operating Temperature Range
Maximum Junction Temperature
Supply Voltage
Parameter
Differential Input Voltage
36
-40 to +105
150
-0.3 to +36
V
V
°C
36
GMA103A
GM 431
GMA103A
3
Symbol
VCC
Vid
Vi
Toper
TJ
ELECTRICAL CHARACTERISTICS
Parameter Symbol Min. Typ . Max. Unit
Total Supply Current, Excluding Current in the Voltage Reference
V +=5V, No load
CC
Tmin. < Tamb < Tmax.
V += 30V, No load
CC
Tmin. < Tamb < Tmax
ICC
0.7
1.2
2
mA
GMA103A
4
OPERATOR 1 (Independent op- amp)
V + = +5V, V = Ground, V = 1.4V, Tamb = 25°C (unless otherwise specified)
CC CC O
Parameter Symbol Min. Typ . Max. Unit
VIO
Avd
Isink
VOL
SR
GBP
THD
VOH
DVIO
IIO
IIB
SVR
CMR
Isource
Io
Vicm
0.5
50
25
10
27
27
7
2
20
100
85
40
60
3
5
mV
V/ mV
mV
V/ µs
Mhz
%
V
µV/ °C
nA
nA
dB
dB
mA
mA
V
Input Offset Voltage
Tamb= 25°C
Tmin. Tamb Tmax.
Large Signal Voltage Gain
V = 15V, R = 2K, V = 1.4V to 11.4V
CC L O
Tmin. Tamb Tmax.
Output Current Sink
V = -1V
id
V = +15V, V = 2V
CC O
Low Level Output Voltage
R = 10K
L
Tmin. Tamb Tmax.
Slew Rate at Unity Gain
V = 0.5 to 3V, V = 15V
iCC
R = 2K, C = 100pF, unity gain
LL
Gain Bandwidth Product
V = 30V, R = 2K,
CC L
C = 100pF, f= 100kHz, V = 10mV
LIN
Total Harmonic Distortion
f= 1kHz
A = 20dB, R = 2K, V = 30V
VLCC
C = 100pF, V = 2V
LOpp
High Level Output Voltage
V += 30V
CC
Tamb= 25°C, R = 10K
L
Tmin. Tamb Tmax.
Input Offset Current
Input Offset Current
Tmin. Tamb Tmax.
30
50
150
200
Input Bias Current
Tmin. Tamb Tmax.
Supply Voltage Rejection Ration
V = 5V to 30V
CC
Input Common Mode Voltage Range
V = +30V (Note 1)
CC
Tmin. Tamb Tmax.
100
20
5
0.2
0.5
28
65
70
60
20
40
0
0
(V +) -1.5
CC
(V +) -2
CC
Common Mode Rejection Ratio
Tmin. Tamb Tmax.
Output Current Source
V = +15V, V = 2V, V = +1V
CC O id
Short Circuit Ground
V = +15V
CC
20
20
0.4
0.9
0.02
Note 1: The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V.
The upper end of the common-mode voltage range is V + - 1.5V.
CC
But either of both inputs can go to +36V without damage.
mA
GMA103A
GM 431
GMA103A
5
OPERATOR 2 (op-amp with non-inverting input connected to the internal Vref)
V + = +5V, V = Ground, Tamb = 25°C (unless otherwise specified)
CC CC
Parameter Symbol Min. Typ . Max. Unit
VIO
Avd
Isink
VOL
SR
GBP
THD
VOH
DVIO
IIB
SVR
Io
0.5
10
27
27
7
20
100
60
3
5
mV
V/ mV
mV
V/ µs
Mhz
%
V
µV/ °C
nA
dB
mA
Input Offset Voltage
Tamb= 25°C
Tmin. Tamb Tmax.
Large Signal Voltage Gain
Vicm= 0V
V = 15V, R = 2K
CC L
Output Current Sink
V = -1V
id
V = +15V, V = 2V
CC O
Low Level Output Voltage
R = 10K
L
Tmin. Tamb Tmax.
Slew Rate at Unity Gain
V = 0.5 to 2V, V = 15V
iCC
R = 2K, C = 100pF, unity gain
LL
Gain Bandwidth Product
V = 30V, R = 2K,
CC L
C = 100pF, f= 100kHz, V = 10mV
LIN
Total Harmonic Distortion
f= 1kHz
A = 20dB, R = 2K, V = 30V
VLCC
C = 100pF, V = 2V
LOpp
High Level Output Voltage
V += 30V
CC
Tamb= 25°C, R = 10K
L
Tmin. Tamb Tmax.
Input Offset Current
Input Bias Current
Negative Input
Supply Voltage Rejection Ration
V = 5V to 30V
CC
Vicm= 0V
100
20
5
0.2
0.5
28
65
40
Short Circuit Ground
V = +15V
CC
20
20
0.4
0.9
0.02
mA
Isource 40 mA
20
Output Current Source
V = 2V, V = +15V, V = +1V
O CC id
GMA103A
GMA103A
6
VOLTAGE REFERENCE
Parameter Symbol Value Unit
IKmA
Cathode Current
Parameter Symbol Min. Typ . Max. Unit
Vref
DVref
Imin
||Z
KA
2.5
5
0.5
0.2
2.51
2.52
24
1
0.5
V
mV
mA
W
Reference Input Voltage
Tamb= 25°C
Tmin. Tamb Tmax.
Reference Input Voltage Deviation Over Temperature Range
V = V , I = 10mA
KA ref K
Tmin. Tamb Tmax.
Minimum Cathode Current for Regulation
V= V
KA ref
Dynamic Impedance (Note 1)
V = V , DI = 1 to 100mA, f < 1kHz
KA ref K
1 to 100
2.49
2.48
Note 1: The dynamic impedance is defined as | | = DV/ DI
KA K
ZKA
GMA103A
GMA103A
7
T
0.275
7.0
0.155
4.0
0.060
1.52
0.050
1.270
0.024
0.6
Inches
mm
( )
Pad Layout
0°~5°
SOP-8(SO-8) PACKAGE OUTLINE DIMENSIONS
PIN INDENT
Unit: mm
0.700 ± 0.15
1.05 Ref
0.375 X 45°
0.16 ± 0.06
1.61 ± 0.11
5.99 ± 0.15
+0.10
-0.05
3.86
1.27 BAIC
1.61 ± 0.11
T
DIP-8 PACKAGE OUTLINE DIMENSIONS
0.015 MIN
0.381 MIN
0.252 ± 0.005
6.401 ± 0.127
0.170 MAX
4.318 MAX
0.100 TYP
2.540 TYP
Inches
mm
( )
0.362 ± 0.005
9.195 ± 0.127
0.130 ± 0.005
3.302 ± 0.127
0.130 ± 0.010
3.302 ± 0.254
0.060 TYP
1.524 TYP
0.018 TYP
0.457 TYP
0.300 ± 0.010
7.62 ± 0.254
0.010 NOM
0.254 NOM
0.355 ± 0.020
9.017 ± 0.508
4.87 +0.08
-0.05
GMA103A
GMA103A
8
ORDERING NUMBER
GMA 103 AS8 R
Gamma Micro.
Circuit Type Package
S8: SO-8
D8: DIP-8
Shipping
T: Tube
R: Tape & Reel
A Version
GMA103A