Os motores de busca de Datasheet de Componentes eletrônicos
  Portuguese  ▼
ALLDATASHEETPT.COM

X  

AD848SQ-883B Folha de dados(PDF) 8 Page - Analog Devices

Nome de Peças AD848SQ-883B
Descrição Electrónicos  High Speed, Low Power Monolithic Op Amp
Download  8 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
Logo AD - Analog Devices

AD848SQ-883B Folha de dados(HTML) 8 Page - Analog Devices

  AD848SQ-883B Datasheet HTML 1Page - Analog Devices AD848SQ-883B Datasheet HTML 2Page - Analog Devices AD848SQ-883B Datasheet HTML 3Page - Analog Devices AD848SQ-883B Datasheet HTML 4Page - Analog Devices AD848SQ-883B Datasheet HTML 5Page - Analog Devices AD848SQ-883B Datasheet HTML 6Page - Analog Devices AD848SQ-883B Datasheet HTML 7Page - Analog Devices AD848SQ-883B Datasheet HTML 8Page - Analog Devices  
Zoom Inzoom in Zoom Outzoom out
 8 / 8 page
background image
AD848/AD849
REV. B
–8–
GROUNDING AND BYPASSING
In designing practical circuits with the AD848 or AD849, the
user must remember that whenever high frequencies are
involved, some special precautions are in order. Circuits must
be built with short interconnect leads. A large ground plane
should be used whenever possible to provide a low resistance,
low inductance circuit path, as well as minimizing the effects of
high frequency coupling. Sockets should be avoided because the
increased interlead capacitance can degrade bandwidth.
Feedback resistors should be of low enough value to assure that
the time constant formed with the capacitances at the amplifier
summing junction will not limit the amplifier performance.
Resistor values of less than 5 k
Ω are recommended. If a larger
resistor must be used, a small (< 10 pF) feedback capacitor in
parallel with the feedback resistor, RF, may be used to compen-
sate for the input capacitances and optimize the dynamic per-
formance of the amplifier.
Power supply leads should be bypassed to ground as close as
possible to the amplifier pins. 0.1
µF ceramic disc capacitors are
recommended.
VIDEO LINE DRIVER
The AD848 functions very well as a low cost, high speed line
driver of either terminated or unterminated cables. Figure 22
shows the AD848 driving a doubly terminated cable.
The termination resistor, RT, (when equal to the characteristic
impedance of the cable) minimizes reflections from the far end
of the cable. While operating off
±5 V supplies, the AD848
maintains a typical slew rate of 200 V/
µs, which means it can
drive a
±1 V, 24 MHz signal on the terminated cable.
A back-termination resistor (RBT, also equal to the characteristic
impedance of the cable) may be placed between the AD848
output and the cable in order to damp any reflected signals
caused by a mismatch between RT and the cable’s characteristic
impedance. This will result in a “cleaner” signal, although it
requires that the op amp supply
±2 V to the output in order to
achieve a
±1 V swing at the line.
Figure 22. Video Line Driver
100pF
LOAD
1000pF
LOAD
Figure 23. AD848 Driving a Capacitive Load
AD848/AD849–Applications
Often termination is not used, either because signal integrity
requirements are low or because too many high frequency
signals returned to ground contaminate the ground plane.
Unterminated cables appear as capacitive loads. Since the
AD848 and AD849 are stable into any capacitive load, the op
amp will not oscillate if the cable is not terminated; however
pulse integrity will be degraded. Figure 23 shows the AD848
driving both 100 pF and 1000 pF loads.
LOW NOISE PRE-AMP
The input voltage noise spectral densities of the AD848 and the
AD849 are shown in Figure 24. The low wideband noise and
high gain bandwidths of these devices makes them well suited as
pre-amps for high frequency systems.
Figure 24. Input Voltage Noise Spectral Density
Input voltage noise will be the dominant source of noise at the
output in most applications. Other noise sources can be
minimized by keeping resistor values as small as possible.
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
Cerdip (Q) Package
Mini-DIP (N) Package
Small Outline (R) Package


Nº de peça semelhante - AD848SQ-883B

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Analog Devices
AD848SQ AD-AD848SQ Datasheet
259Kb / 8P
   High Speed, Low Power Monolithic Op Amp
REV. B
AD848SQ AD-AD848SQ Datasheet
283Kb / 9P
   High Speed, Low Power Monolithic Op Amp
AD848SQ/883B AD-AD848SQ/883B Datasheet
259Kb / 8P
   High Speed, Low Power Monolithic Op Amp
REV. B
AD848SQ/883B AD-AD848SQ/883B Datasheet
283Kb / 9P
   High Speed, Low Power Monolithic Op Amp
More results

Descrição semelhante - AD848SQ-883B

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Analog Devices
AD847 AD-AD847 Datasheet
241Kb / 12P
   High Speed, Low Power Monolithic Op Amp
REV. F
AD847JNZ AD-AD847JNZ Datasheet
245Kb / 12P
   High Speed, Low Power Monolithic Op Amp
REV. F
AD849 AD-AD849_15 Datasheet
251Kb / 8P
   High Speed, Low Power Monolithic Op Amp
REV. B
AD848 AD-AD848 Datasheet
259Kb / 8P
   High Speed, Low Power Monolithic Op Amp
REV. B
AD848 AD-AD848_15 Datasheet
250Kb / 8P
   High Speed, Low Power Monolithic Op Amp
REV. B
AD848 AD-AD848_17 Datasheet
283Kb / 9P
   High Speed, Low Power Monolithic Op Amp
AD847ARZ AD-AD847ARZ Datasheet
245Kb / 12P
   High Speed, Low Power Monolithic Op Amp
Rev. F
AD847JRZ-REEL7 AD-AD847JRZ-REEL7 Datasheet
172Kb / 12P
   High Speed, Low Power Monolithic Op Amp
REV. F
AD847JRZ AD-AD847JRZ Datasheet
172Kb / 12P
   High Speed, Low Power Monolithic Op Amp
REV. F
AD847 AD-AD847_15 Datasheet
245Kb / 12P
   High Speed, Low Power Monolithic Op Amp
REV. F
More results


Html Pages

1 2 3 4 5 6 7 8


Folha de dados Download

Go To PDF Page


Ligação URL




Privacy Policy
ALLDATASHEETPT.COM
ALLDATASHEET é útil para você?  [ DONATE ] 

Sobre Alldatasheet   |   Publicidade   |   Contato conosco   |   Privacy Policy   |   roca de Link   |   Lista de Fabricantes
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com