BC447 Datasheet, PDF (1/36 Pages) ON Semiconductor – High Voltage Transistors

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DGN-8 DGK-8 D-8
DRB-8
THS4271
THS4275
SLOS397E − JULY 2002 − REVISED JANUARY 2004
LOW NOISE, HIGH SLEW RATE, UNITY GAIN STABLE VOLTAGE
FEEDBACK AMPLIFIER
FEATURES
D Unity Gain Stability
D Low Voltage Noise
− 3 nV/√Hz
D High Slew Rate: 1000 V/µs
D Low Distortion
− −92 dBc THD at 30 MHz
D Wide Bandwidth: 1.4 GHz
D Supply Voltages
− +5 V, ±5 V, +12 V, +15 V
D Power Down Functionality (THS4275)
D Evaluation Module Available
DESCRIPTION
APPLICATIONS
D High Linearity ADC Preamplifier
D Wireless Communication Receivers
D Differential to Single-Ended Conversion
D DAC Output Buffer
D Active Filtering
THS4271
NC
1
8
NC
IN−
2
7
V_S+
IN+
3
6
V_OUT
V_S−
4
5
NC
The THS4271 and THS4275 are low-noise, high slew rate,
unity gain stable voltage feedback amplifiers designed to
run from supply voltages as low as 5 V and as high as 15 V.
The THS4275 offers the same performance as the
THS4271 with the addition of power down capability. The
combination of low-noise, high slew rate, wide bandwidth,
low distortion, and unity gain stability make the THS4271
and THS4275 high performance devices across multiple
ac specifications.
RELATED DEVICES
DEVICE
THS4211
THS4503
THS3202
DESCRIPTION
1-GHz voltage feedback amplifier
Wideband fully differential amplifier
Dual, wideband current feedback amplifier
Designers using the THS4271 are rewarded with higher
dynamic range over a wider frequency band without the
stability concerns of decompensated amplifiers. The
devices are available in SOIC, MSOP with PowerPAD,
and leadless MSOP with PowerPAD packages.
Low-Noise, Low-Distortion, Wideband Application Circuit
50 Ω Source
+5 V
50 Ω
+
VI
49.9 Ω ^THS4271
VO
_
HARMONIC AND INTERMODULATION
DISTORTION
vs
FREQUENCY
−40
Gain = 2
Rf = 249 Ω
−50 _{RL = 150 Ω}
VO = 2 VPP
−60 ^{VS = ±5 V}
IMD3
200 kHz Tone Spacing
−70
VO = 2 VPP Envelope
−80
HD2
−5 V
249 Ω
249 Ω
−90
−100
1
HD3
10
100
f − Frequency − MHz
NOTE: Power supply decoupling capacitors not shown
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
This document contains information on products in more than one phase of
development. The status of each device is indicated on the page(s) specifying its
electrical characteristics.
Copyright  2002 − 2004, Texas Instruments Incorporated