Page 1
Global Mixed-mode Technology Inc.
G1212
Rail-to-Rail I/O OP Amp
Features
Single-Supply Operation: 2.0V to 5.5V
Low Supply Current: 700 µA
Wide Bandwidth: 3 MHz
Slew Rate: 1 V/µs
No Phase Reversal
Unity Gain Stable
Small, 5-Pin SOT23-5 Package available
Applications
Battery-Powered Instruments
Portable Equipment
Audio Signal Conditioning
Multimedia Audio
ASIC Input or Output Amplifier
General Description
The G1212 is a rail-to-rail input and output single-supply amplifiers. This high output current makes
these amplifiers excellent for driving either resistive or
capacitive loads. AC performance is very good with
3.0MHz bandwidth.
The very low input bias currents enable the G1212 to
be used for integrators and diode amplification and
other applications requiring low input bias current. The
supply current is only 700µA per amplifier at 3.0V,
allowing low current applications to control high current loads.
Applications include audio amplification for computers,
sound ports, sound cards and set-top boxes. The
G1212 is very stable and capable of driving capacitive
loads. The ability to swing rail-to-rail at the inputs and
outputs enables designers to buffer CMOS ADC/DACs,
ASICs or other wide output swing devices in single-supply systems.
Ordering Information
PART TEMP. RANGE PIN-PACKAGE
G1212 0°C to 70°C SOT23-5
Pin Configuration Typical Application Circuit
VDD
VDD
OUT
OUT
V
V
DD
DD
IN+
IN+
G1212
G1212
V
1
1
2
2
+-
+-
3
3
SOT23-5
SOT23-5
V
5
5
SS
SS
IN
IN
IN
IN-
IN-
4
4
3
3
3
4
4
4
VDD
2
2
2
+
+
+
+
+
+
G121
G1212
G121
G1212
G121
G1212
-
-
-
-
-
-
5
5
5
1
1
1
RL
RL
RL
2K
2K
2K
OUT
OUT
OUT
Ver 1.0
Jul 30, 2001
1
TEL: 886-3-5788833
http://www.gmt.com.tw
Page 2
Global Mixed-mode Technology Inc.
G1212
Absolute Maximum Ratings
(Note1)
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
VDD Supply voltage 0 7.0 V
T
Storage temperature -65 +150 °C
stg
T
Operating ambient temperature 0 +70 °C
amb
Notes:
1. Absolute Maximum Ratings are limits beyond which damage to the device may occur.
Thermal Characteristics
SYMBOL PARAMETER VALUE UNIT
R
Thermal resistance from junction to ambient in free air SOT23-5 240 °C/W
th j-a
Electrical Characteristics
V
= 2V; VSS = 0V ; T
DD
= 25°C; RL >1M
amb
; unless otherwise specified.
ΩΩΩΩ
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supplies
IDD Supply current no load - 0.13 0.4 mA
P
Total power dissipation no load - 0.26 0.8 mW
tot
DC Characteristics
V
Input offset voltage ±1mV ±15 mV
I (OS)
VCM Common mode voltage 0 - 2.0 V
I
B
I
OS
R
IN
A
V
IO Maximum output current V
VO Output Voltage Swing RL = 2kΩ 0.04 - 1.96 V
PSRR Power supply rejection ratio 50 - dB
CMRR Common-Mode Rejection Ratio 55 dB
AC Characteristics
GBWP Gain-Bandwidth Product Open-loop; No Load - 1.0 - MHz
SR Slew-Rate
PM Phase Margin - 60 - deg
Input Bias Current ±0.05 nA
Input Bias Current Offset ±0.05 nA
Input Resistance 1000 - MΩ
Open Loop Gain 95 - dB
= ±VIN x 90% -
OUT
Measured from 20% to 80% of
step
2V
P-P
12 - mA
±
0.3 V/µs
Ver 1.0
Jul 30, 2001
2
TEL: 886-3-5788833
http://www.gmt.com.tw
Page 3
Global Mixed-mode Technology Inc.
G1212
Electrical Characteristics
V
= 3V; VSS = 0V ; T
DD
= 25°C; RL =1M
amb
; unless otherwise specified.
ΩΩΩΩ
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supplies
IDD Supply current no load - 0.7 2.1 mA
P
Total power dissipation no load - 2.1 6.3 mW
tot
DC Characteristics
V
Input offset voltage ±1.5 ±15 mV
I (OS)
VCM Common mode voltage 0 - 3.0 V
I
B
I
OS
R
IN
A
V
IO Maximum output current V
VO Output Voltage Swing RL = 2kΩ 0.04 - 2.96 V
PSRR Power supply rejection ratio 65 - dB
CMRR Common-Mode Rejection Ratio 55 dB
AC Characteristics
GBWP Gain-Bandwidth Product Open-loop; No Load - 3.0 - MHz
SR Slew-Rate
PM Phase Margin - 60 - deg
Input Bias Current ±0.05 nA
Input Bias Current Offset ±0.05 nA
Input Resistance 1000 - MΩ
Open Loop Gain 90 - dB
= ±VIN x 90% -
OUT
Measured from 20% to 80% of
step
5V
P-P
27 - mA
±
1 V/µs
Electrical Characteristics
V
= 5V; VSS = 0V ; T
DD
= 25°C; RL = 1M
amb
; unless otherwise specified.
ΩΩΩΩ
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supplies
IDD Supply current no load - 0.9 2.4 mA
P
Total power dissipation no load - 4.5 12 mW
tot
DC Characteristics
V
Input offset voltage ±3 ±15 mV
I (OS)
VCM Common mode voltage 0 - 5.0 V
I
B
I
OS
R
IN
A
V
IO Maximum output current V
VO Output Voltage Swing RL = 2kΩ 0.05 - 4.95 V
PSRR Power supply rejection ratio 65 - dB
CMRR Common-Mode Rejection Ratio 45 dB
AC Characteristics
GBWP Gain-Bandwidth Product Open-loop; No Load - 13 - MHz
SR Slew-Rate
PM Phase Margin - 60 - deg
Input Bias Current ±0.05 nA
Input Bias Current Offset ±0.05 nA
Input Resistance 1000 - MΩ
Open Loop Gain 65 - dB
= ±VIN x 90% -
OUT
Measured from 10% to 90% of
5V
step
P-P
6 V/µs
60 - mA
±
Ver 1.0
Jul 30, 2001
3
TEL: 886-3-5788833
http://www.gmt.com.tw
Page 4
Global Mixed-mode Technology Inc.
G1212
Large Signal Transient Response Figure
Test Condition
Vs = ±1V Vs = ±2.5V
Vs = ±1.5V
TA = 25°C, AV = 1 , RL = 2K
：：：：
ΩΩΩΩ
operation with beyond-the Rail input
Ver 1.0
Jul 30, 2001
4
TEL: 886-3-5788833
http://www.gmt.com.tw
Page 5
+
Global Mixed-mode Technology Inc.
Small Signal Transient Response Figure
Test Condition
Vs = ±1V Vs = ±1.5V
TA = 25°C, AV = 1 , RL = 2k
：：：：
ΩΩΩΩ
G1212
Vs = ±2.5V
Test Condition: Vs =±1.5V,TA = 25°C
Open-Loop Gain & Phase vs. Frequency
100
90
80
70
60
50
40
Gain - dB
30
20
10
0
0.1 1 10 100 1000 10000
Frequency - kHZ
Vs=±1.5V
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
Test Condition: Vs =±1.5V,T
70
60
50
40
30
20
Phase - degree
10
0
Power Supply Rejection - dB
= 25°C
A
PSRR
Vs=±1.5V
0.1 1 10 100 1000
Frequency - kHZ
PSRR
PSRR -
Ver 1.0
Jul 30, 2001
5
TEL: 886-3-5788833
http://www.gmt.com.tw
Page 6
Global Mixed-mode Technology Inc.
Package Information
G1212
D
H
E
e1
e
A2
b
A
A1
Note:
1. Package body sizes exclude mold flash protrusions or gate burrs
2. Tolerance ±0.1000 mm (4mil) unless otherwise specified
3. Coplanarity: 0.1000mm
4.
Dimension L is measured in gage plane
SYMBOLS
A 1.00 1.10 1.30
A1 0.00 ----- 0.10
A2 0.70 0.80 0.90
b 0.35 0.40 0.50
C 0.10 0.15 0.25
D 2.70 2.90 3.10
E 1.40 1.60 1.80
e ----- 1.90(TYP) -----
e1 ----- 0.95 -----
H 2.60 2.80 3.00
L 0.37 ------ -----
1
θ
DIMENSIONS IN MILLIMETERS
MIN NOM MAX
1º 5º 9º
C
L
θ
1
Taping Specification
(Unit: mm)
Feed Direction
Feed Direction
SOT 23-5 Package Orientation
SOT 23-5 Package Orientation
GMT Inc. d oes not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and GMT Inc. reserves the right at any time without notice to change said circuitry and specifications.
Ver 1.0
Jul 30, 2001
6
TEL: 886-3-5788833
http://www.gmt.com.tw
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