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PDF MAX4380EUT-T Data sheet ( Hoja de datos )
| Número de pieza | MAX4380EUT-T | |
| Descripción | Ultra-Small / Low-Cost / 210MHz / Single-Supply Op Amps with Rail-to-Rail Outputs and Disable | |
| Fabricantes | Maxim Integrated | |
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19-2012; Rev 2; 4/03
Ultra-Small, Low-Cost, 210MHz, Single-Supply
Op Amps with Rail-to-Rail Outputs and Disable
General Description
The MAX4380–MAX4384 family of op amps are unity-
gain-stable devices that combine high-speed perfor-
mance, Rail-to-Rail® outputs, and high-impedance
disable mode. These devices operate from a +4.5V to
+11V single supply or from ±2.25V to ±5.5V dual sup-
plies. The common-mode input voltage range extends
beyond the negative power-supply rail (ground in sin-
gle-supply applications).
The MAX4380–MAX4384 require only 5.5mA of quies-
cent supply current per op amp while achieving a
210MHz -3dB bandwidth, 55MHz 0.1dB gain flatness
and a 485V/µs slew rate. These devices are an excel-
lent solution in low-power/low-voltage systems that
require wide bandwidth, such as video, communica-
tions, and instrumentation.
The MAX4380 single with disable is available in an ultra-
small 6-pin SC70 package.
Applications
Set-Top Boxes
Surveillance Video Systems
Battery-Powered Instruments
Analog-to-Digital Converter Interface
CCD Imaging Systems
Video Routing and Switching Systems
Digital Cameras
Video-on-Demand
Video Line Driver
Typical Operating Circuit
DISABLE
IN
MAX4380
75Ω OUT
Zo = 75Ω
75Ω
500Ω
500Ω
Features
o Low Cost and High Speed:
210MHz -3dB Bandwidth
55MHz 0.1dB Gain Flatness
485V/µs Slew Rate
o Disable Mode Places Outputs in High-Impedance
State
o Single +4.5V to +11V Operation
o Rail-to-Rail Outputs
o Input Common-Mode Range Extends Beyond VEE
o Low Differential Gain/Phase: 0.02%/0.08°
o Low Distortion at 5MHz
-65dBc SFDR
-63dB Total Harmonic Distortion
o Ultra-Small 6-Pin SC70, 6-Pin SOT23, 10-Pin µMAX,
14-Pin TSSOP, and 20-Pin TSSOP Packages
PART
MAX4380EXT-T
MAX4380EUT-T
MAX4381EUB
MAX4382EUD
MAX4382ESD
MAX4382EEE
MAX4383EUD
MAX4383ESD
MAX4383ESE
MAX4383EEE
MAX4384EUP
Ordering Information
TEMP RANGE PIN-
TOP
PACKAGE MARK
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
6 SC70-6
6 SOT23-6
10 µMAX
14 TSSOP
14 SO
16 QSOP
14 TSSOP
14 SO
16 SO
16 QSOP
20 TSSOP
AAV
—
—
—
—
—
—
—
—
—
—
TOP VIEW
Pin Configurations
OUT 1
6 VCC
MAX4380
VEE 2
5 DISABLE
VIDEO LINE DRIVER
IN+ 3
4 IN-
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
SC70-6/SOT23-6
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1 page  
Ultra-Small, Low-Cost, 210MHz, Single-Supply
Op Amps with Rail-to-Rail Outputs and Disable
AC ELECTRICAL CHARACTERISTICS–Single Supply (continued)
(VCC = +5V, VEE = 0, VCM = +1.5V, RL = 100Ω to VCC/2, DISABLE_ = VCC (MAX4380/MAX4381/MAX4382/MAX4384),
VOUT = VCC/2, AVCL = +1V/V, TA = +25°C, unless otherwise noted.)
PARAMETER
Channel-to-Channel Isolation
Input 1dB Compression Point
Differential Phase Error
Differential Gain Error
Input Noise-Voltage Density
Input Noise-Current Density
Input Capacitance
Output Impedance
Enable Time
SYMBOL
CHISO
DP
DG
en
In
CIN
ZOUT
tON
CONDITIONS
Specified at DC
fC = 10MHz, AVCL = +2V/V
NTSC, RL = 150Ω
NTSC, RL = 150Ω
f = 10kHz
f = 10kHz
f = 10MHz
VIN = 1V (MAX4380/MAX4381/
MAX4382/MAX4384)
MIN TYP MAX UNITS
-102
dB
14 dBm
0.08
degrees
0.02
10
2
%
nV/√Hz
pA/√Hz
1 pF
1.5 Ω
100 ns
Disable Time
tOFF
VIN = 1V (MAX4380/MAX4381/
MAX4382/MAX4384)
1 µs
Note 1: All devices are 100% production tested at TA = +25°C. Specifications over temperature limits are guaranteed by design.
Note 2: PSRR for single +5V supply tested with VEE = 0, VCC = +4.5V to +5.5V; PSRR for dual ±5V supply tested with VEE = -4.5V
to -5.5V, VCC = +4.5V to +5.5V.
Typical Operating Characteristics
(VCC = +5V, VEE = 0, VCM = +1.5V, AVCL = +1V/V, RL = 100Ω to VCC/2, TA = +25°C, unless otherwise noted.)
SMALL-SIGNAL GAIN vs. FREQUENCY
4
3 VOUT = 100mVp-p
2
1
0
-1
-2
-3
-4
-5
-6
100k
1M 10M 100M
FREQUENCY (Hz)
1G
LARGE-SIGNAL GAIN vs. FREQUENCY
4
3 VOUT = 2Vp-p
2
1
0
-1
-2
-3
-4
-5
-6
100k
1M 10M 100M
FREQUENCY (Hz)
1G
SMALL-SIGNAL GAIN FLATNESS
vs. FREQUENCY
0.4
0.3 VOUT = 100mVp-p
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
100k
1M 10M 100M
FREQUENCY (Hz)
1G
_______________________________________________________________________________________ 5
5 Page 
Ultra-Small, Low-Cost, 210MHz, Single-Supply
Op Amps with Rail-to-Rail Outputs and Disable
RG RF
MAX438 _
VOUT
IN
VOUT = [1+ (RF / RG)] VIN
Figure 1a. Noninverting Gain Configuration
RG
IN
RF
MAX438 _
VOUT
VOUT = -(RF / RG) VIN
Figure 1b. Inverting Gain Configuration
have a 16ns settling time to 0.1%, 485V/µs slew rates,
and output-current-drive capability of up to 75mA
making them ideal for driving video loads.
Inverting and Noninverting Configurations
Select the gain-setting feedback (RF) and input (RG)
resistor values to fit your application. Large resistor val-
ues increase voltage noise and interact with the ampli-
fier’s input and PC board capacitance. This can
generate undesirable poles and zeros and decrease
bandwidth or cause oscillations. For example, a nonin-
verting gain-of-two configuration (RF = RG) using 1kΩ
resistors, combined with 1pF of amplifier input capaci-
tance and 1pF of PC board capacitance, causes a
pole at 159MHz. Since this pole is within the amplifier
bandwidth, it jeopardizes stability. Reducing the 1kΩ
resistors to 100Ω extends the pole frequency to
1.59GHz, but could limit output swing by adding 200Ω
in parallel with the amplifier’s load resistor
(Figures 1a and 1b).
Layout and Power-Supply Bypassing
These amplifiers operate from a single +4.5V to +11V
power supply or from dual ±2.25V to ±5.5V supplies. For
single-supply operation, bypass VCC to ground with a
0.1µF capacitor as close to the pin as possible. If operat-
ing with dual supplies, bypass each supply with a 0.1µF
capacitor.
Maxim recommends using microstrip and stripline
techniques to obtain full bandwidth. To ensure that the
PC board does not degrade the amplifier’s perfor-
mance, design it for a frequency greater than 1GHz.
Pay careful attention to inputs and outputs to avoid
large parasitic capacitance. Whether or not you use a
constant-impedance board, observe the following
design guidelines:
• Don’t use wire-wrap boards; they are too inductive.
• Don’t use IC sockets; they increase parasitic capaci-
tance and inductance.
• Use surface-mount instead of through-hole compo-
nents for better high-frequency performance.
• Use a PC board with at least two layers; it should be
as free from voids as possible.
• Keep signal lines as short and as straight as possi-
ble. Do not make 90° turns; round all corners.
Rail-to-Rail Outputs,
Ground-Sensing Inputs
For +5V single-supply operation, the input common-
mode range extends from (VEE - 200mV) to (VCC
- 2.25V) with excellent common-mode rejection.
Beyond this range, the amplifier output is a nonlinear
function of the input, but does not undergo phase
reversal or latchup.
For ±5V dual-supply operation, the common-mode
range is from VEE to (VCC - 2.25V)
For +5V single-supply operation the output swings to
within 50mV of either power-supply rail with a 2kΩ
load. The input ground sensing and the rail-to-rail out-
put substantially increase the dynamic range. With a
symmetric input in a single +5V application, the input
can swing 2.95Vp-p and the output can swing 4.9Vp-p
with minimal distortion.
Low-Power Disable Mode
The disable feature (DISABLE_) allows the amplifier to
be placed in a low-power, high-output-impedance
state. When the disable pin (DISABLE_) is active, the
amplifier’s output impedance is 35kΩ. This high resis-
tance and the low 2pF output capacitance make the
MAX4380–MAX4382 and the MAX4384 ideal in
RF/video multiplexer or switch applications. For larger
arrays, pay careful attention to capacitive loading.
Refer to the Output Capacitive Loading and Stability
section.
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet MAX4380EUT-T.PDF ] | |
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