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G1201 View Datasheet(PDF) - Global Mixed-mode Technology Inc

Part NameDescriptionManufacturer
G1201 Rail-to-Rail I/O, 100mA Output Single-Supply Amplifiers GMT
Global Mixed-mode Technology Inc GMT
G1201 Datasheet PDF : 9 Pages
1 2 3 4 5 6 7 8 9
Global Mixed-mode Technology Inc.
G1201
Electrical Characteristics (VS = +5.0V, VCM = 2.5V, TA=+25°C unless otherwise noted)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP
Input Characteristics
Offset Voltage
VOS
Input Bias Current
IB
---
5
--- 50
Input Offset Current
IOS
--- 25
Input Voltage Range
Common-Mode Rejection Ratio
Large Signal Voltage Gain
Output Characteristics
VCM
CMRR
AVO
VCM = 0V to 5V
RL = 2kΩ
VO = 0.5V to 4.5V
0
---
40 65
70 90
Output Voltage High
VOH
IL = 10mA
4.90 4.94
Output Voltage Low
Output Current
Power Supply
VOL
IL = 10mA
IOUT
--- 50
--- ±100
Power Supply Rejection Ratio
PSRR
fi= 1kHz
Vripple(PEAK) = 1V
50 66
Supply Current/Amplifier
ISY
VO = 0V
--- 3.5
Dynamic Performance
Slew Rate
Full-Power Bandwidth
SR
BWp
RL = 2kΩ
RL = 32Ω
VO(P-P) = 4.2V
THD = 50dB
--- 6.2
--- 30
Settling Time
ts
To 0.1%
--- 1.3
Gain Bandwidth Product
GBP
--- 3.5
Channel Separation
Total Harmonic Distortion
CS
f = 1kHz, RL = 32Ω
--- 70
THD
f = 1kHz, AV = -1 RL = 32Ω, VO(P-P) = 4.3V
---
50
Note: Specifications subject to change without notice.
MAX
15
500
250
5
---
---
---
100
---
---
6
---
---
---
---
---
---
UNIT
mV
pA
pA
V
dB
dB
V
mV
mA
dB
mA
V/μs
kHz
μs
MHz
dB
dB
Caution
ESD (electrostatic discharge) sensitive device. Elec-
trostatic charges as high as 2000V readily accumulate
on the human body and test equipment and can dis-
charge without detection.
Although the G1201 feature proprietary ESD protec-
tion circuitry, permanent damage may occur on de-
vices subjected to high-energy electrostatic discharges.
Therefore, proper ESD precautions are recommended
to avoid performance degradation or loss of functionality.
Applications
Theory of Operation
The G1201 is an all-CMOS, high output current drive,
rail-to-rail input/output operational amplifier. Its high
output current drive and stability with heavy capacitive
loads makes the G1201 an excellent choice as a drive
amplifier.
Short-Circuit Protection
As a result of the design of the output stage for maxi-
mum load current capability, the G1201 does not have
any internal short-circuit protection circuitry. Direct
connection of the G1201’s output to the positive sup-
ply in single-supply applications will destroy the device.
In those applications where some protection is needed,
but not at the expense of reduced output voltage
headroom, a low value resistor in series with the out-
put, as shown in Figure 1, can be used. The resistor,
connected within the feedback loop of the amplifier,
will have very little effect on the performance of the
amplifier other than limiting the maximum available
output voltage swing.
+5V
VIN
+
_
RX
20Ω
VOUT
Figure 1. Output Short-Circuit Protection
Ver 1.2
Jul 24, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
3
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