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PDF TSH330 Data sheet ( Hoja de datos )
| Número de pieza | TSH330 | |
| Descripción | 1.1 GHz Low-Noise Operational Amplifier | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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TSH330www.DataSheet4U.com
1.1 GHz Low-Noise Operational Amplifier
■ Bandwidth: 1.1GHz (Gain=+2)
■ Quiescent current: 16.6 mA
■ Slew rate: 1800V/µs
■ Input noise: 1.3nV/√Hz
■ Distortion: SFDR = -78dBc (10MHz, 2Vp-p)
■ Output stage optimized for driving 100Ω
loads
■ Tested on 5V power supply
Description
The TSH330 is a current feedback operational
amplifier using a very high-speed complementary
technology to provide a large bandwidth of
1.1GHz in gain of 2 while drawing only 16.6mA of
quiescent current. In addition, the TSH330 offers
0.1dB gain flatness up to 160MHz with a gain of 2.
With a slew rate of 1800V/µs and an output stage
optimized for driving a standard 100Ω load, this
device is highly suitable for applications where
speed and low-distortion are the main
requirements.
The TSH330 is a single operator available in the
SO8 plastic package, saving board space as well
as providing excellent thermal and dynamic
performances.
Pin Connections (top view)
D
SO-8
(Plastic Micropackage)
NC 1
-IN 2
+IN 3
-VCC 4
_
+
SO8
8 NC
7 +VCC
6 Output
5 NC
Applications
■ Communication & video test equipment
■ Medical instrumentation
■ ADC drivers
Order Codes
Part Number
TSH330ID
TSH330IDT
Temperature Range
-40°C to +85°C
Package
SO8
SO8
Conditioning
Tube
Tape&Reel
Marking
TSH330I
TSH330I
June 2005
Revision 3
1/19
1 page  
Electrical Characteristics
Figure 1. Frequency response, positive gain
24
22
20
18
16
14
12
10
8
6
4
2
0
-2
-4 Small Signal
-6 Vcc=5V
-8 Load=100Ω
-10
1M
Gain=+10
Gain=+4
Gain=+2
Ga in=+ 1
10M
100M
Frequency (Hz)
1G
Figure 2. Gain flatness, gain=+4
12,2
12,0
11,8
11,6
Vin
8k2
22pF
+
-
300R
100R
Vout
11,4
Gain=+4, Vcc=5V,
Small Signal
1M
10M
100M
Frequency (Hz)
Figure 3. Compensation, gain=+2
10
8
6
4
2
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
-22
1M
Vin
8k2
1pF
+
-
300R
300R
Vout
Gain=+2, Vcc=5V,
Small Signal
10M
100M
Frequency (Hz)
1G
TSH330
Figure 4. Frequency wrewswp.DoantsaeS,heneetg4Ua.tcivoemgain
24
22
20
18
16
14
12
10
8
6
4
2
0
-2
-4 Small Signal
-6 Vcc=5V
-8 Load=100Ω
-10
1M
Gain =-10
Gain=-4
Gain=-2
Gain=-1
10M
100M
Frequency (Hz)
1G
Figure 5. Gain flatness, gain=+2
6,2
6,0
Vin
5,8 +
-
Vout
8k2 300R
1pF 300R
5,6
5,4
1M
Gain=+2, Vcc=5V,
Small Signal
10M
100M
Frequency (Hz)
Figure 6. Compensation, gain=+4
16
14
12
10
8
6
4
2
0
-2
-4
-6
-8
-10
-12
-14
-16
1M
Vin
8k2
22pF
+
-
300R
100R
Vout
Gain=+4, Vcc=5V,
Small Signal
10M
100M
Frequency (Hz)
1G
1G
5/19
5 Page 
Power Supply Considerations
TSH330
4 Power Supply Considerations
www.DataSheet4U.com
Correct power supply bypassing is very important for optimizing performance in high-frequency ranges.
Bypass capacitors should be placed as close as possible to the IC pins to improve high-frequency
bypassing. A capacitor greater than 1µF is necessary to minimize the distortion. For better quality
bypassing, a capacitor of 10nF can be added using the same implementation conditions. Bypass
capacitors must be incorporated for both the negative and the positive supply.
For example, on the SO8_SINGLE_HF board, these capacitors are C6, C7, C8, C9.
Figure 31. Circuit for power supply bypassing
+VCC
10microF
+
10nF
+
- 10nF
-VCC
10microF
+
Single power supply
In the event that a single supply system is used, new biasing is necessary to assume a positive output
dynamic range between 0V and +VCC supply rails. Considering the values of VOH and VOL, the amplifier
will provide an output dynamic from +0.9V to +4.1V on 100Ω load.
The amplifier must be biased with a mid-supply (nominally +VCC/2), in order to maintain the DC
component of the signal at this value. Several options are possible to provide this bias supply, such as a
virtual ground using an operational amplifier or a two-resistance divider (which is the cheapest solution).
A high resistance value is required to limit the current consumption. On the other hand, the current must
be high enough to bias the non-inverting input of the amplifier. If we consider this bias current (55µA
max.) as the 1% of the current through the resistance divider to keep a stable mid-supply, two resistances
of 470Ω can be used.
The input provides a high pass filter with a break frequency below 10Hz which is necessary to remove the
original 0 volt DC component of the input signal, and to fix it at +VCC/2.
Figure 32 illustrates a 5V single power supply configuration for the SO8_SINGLE evaluation board (see
Evaluation Boards on page 10).
11/19
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| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet TSH330.PDF ] | |
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