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PDF MAX4354 Data sheet ( Hoja de datos )
| Número de pieza | MAX4354 | |
| Descripción | Single-Supply Op Amps | |
| Fabricantes | Maxim Integrated | |
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19-1824; Rev 1; 1/05
Low-Cost, +3V/+5V, 620µA, 200MHz,
Single-Supply Op Amps with Rail-to-Rail Outputs
General Description
The MAX4452/MAX4352 single, MAX4453/MAX4353
dual, and MAX4454/MAX4354 quad amplifiers combine
high-speed performance with ultra-low power con-
sumption. The MAX4452/MAX4453/MAX4454 are unity-
gain stable and achieve a -3dB bandwidth of 200MHz,
while the MAX4352/MAX4353/MAX4354 are compen-
sated for a minimum closed-loop gain of +5V/V and
achieve a 80MHz -3dB bandwidth. These devices con-
sume only 620µA of supply current per amplifier.
These amplifiers operate from a +2.7V to +5.25V single
supply and feature rail-to-rail outputs. Along with an
excellent speed/power ratio of 323MHz/mA, these
devices feature a slew rate of 95V/µs and fast 20ns rise
and fall times. These devices are ideal for low-
power/low-voltage systems that require wide bandwidth
such as cell phones and keyless entry systems.
The MAX4452/MAX4352 are available in miniature 5-pin
SC70 and SOT23 packages, while the MAX4453/
MAX4353 are available in tiny 8-pin SOT23, Thin SOT23,
and SO packages. The MAX4454/MAX4354 are avail-
able in space-saving 14-pin TSSOP and SO packages.
________________________Applications
Battery-Powered Instruments
Cellular Telephones
Portable Communications
Keyless Entry
Baseband Applications
Typical Operating Characteristic
SUPPLY CURRENT vs.
SUPPLY VOLTAGE (PER AMPLIFIER)
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0.45
0.40
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
SUPPLY VOLTAGE (V)
Features
o Ultra-Low 620µA Supply Current
o High Speed (MAX4452/MAX4453/MAX4454)
200MHz -3dB Bandwidth
30MHz 0.1dB Gain Flatness
95V/µs Slew Rate
o High Speed (MAX4352/MAX4353/MAX4354)
80MHz -3dB Bandwidth
4MHz 0.1dB Gain Flatness
240V/µs Slew Rate
o Single +3V/+5V Operation
o Rail-to-Rail Outputs
o Ultra-Small SC70-5, SOT23-5, SOT23-8 and Thin
SOT23-8 Packages
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX4452EXK-T -40°C to +85°C
MAX4452EUK-T -40°C to +85°C
MAX4453EKA-T -40°C to +85°C
MAX4453EZA-T -40°C to +85°C
MAX4453ESA -40°C to +85°C
MAX4454EUD -40°C to +85°C
MAX4454ESD -40°C to +85°C
MAX4352EXK-T -40°C to +85°C
MAX4352EUK-T -40°C to +85°C
MAX4353EKA-T -40°C to +85°C
MAX4353ESA -40°C to +85°C
MAX4354EUD -40°C to +85°C
MAX4354ESD -40°C to +85°C
5 SC70-5
5 SOT23-5
8 SOT23-8
8 Thin SOT23-8
8 SO
14 TSSOP
14 SO
5 SC70-5
5 SOT23-5
8 SOT23-8
8 SO
14 TSSOP
14 SO
TOP
MARK
ABI
ADOV
AADS
AAAB
—
—
—
ABJ
ADOW
AADT
—
—
—
Pin Configurations appear at end of data sheet.
Selector Guide
PART
MAX4452
MAX4352
MAX4453
MAX4353
MAX4454
MAX4354
NO.
OF
AMPS
1
1
2
2
4
4
MIN
GAIN
1
5
1
5
1
5
GAIN
BANDWIDTH
(MHz)
200
400
200
400
200
400
SLEW
RATE
(V/µs)
95
240
95
240
95
240
________________________________________________________________ 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  
Low-Cost, +3V/+5V, 620µA, 200MHz,
Single-Supply Op Amps with Rail-to-Rail Outputs
AC ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5V, VEE = 0, VCM = +1.75V, RL = 1kΩ to VCC/2, AVCL = +1V/V (MAX4452/MAX4453/MAX4454), AVCL = +5V/V
(MAX4352/MAX4353/MAX4354), TA = +25°C, unless otherwise noted.)
PARAMETER
Two-Tone, Third-Order
Intermodulation Distortion
Input Noise-Voltage Density
Input Noise-Current Density
Input Capacitance
Output Impedance
Capacitive Load Drive
Crosstalk
Power-Up 1% Settling Time
(Note 2)
SYMBOL
CONDITIONS
en
in
CIN
ZOUT
f1 = 2MHz, f2 = 2.1MHz
f = 10kHz
f = 10kHz
f = 1MHz
XTALK
MAX4453/MAX4454/MAX4353/MAX4354
VOUT = 100mVp-p, f = 1MHz
MIN TYP MAX UNITS
-65 dBc
15 nV/√Hz
0.5 pA/√Hz
2 pF
0.8 Ω
22 pF
-74 dB
1 100 µs
Note 1: Units are 100% production tested at TA = +25°C. Specifications over temperature limits are guaranteed by design.
Note 2: Guaranteed by design.
Typical Operating Characteristics
(VCC = +5V, VEE = 0, VCM = +1.75V, AVCL = +1V/V (MAX4452/MAX4453/MAX4454), AVCL = +5V/V (MAX4352/MAX4353/MAX4354),
RL = 1kΩ to VCC/2, CL = 5pF, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT vs.
SUPPLY VOLTAGE (PER AMPLIFIER)
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0.45
0.40
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
SUPPLY VOLTAGE (V)
SMALL-SIGNAL GAIN vs. FREQUENCY
3
2
1
MAX4452/MAX4453/
MAX4454
0
-1 MAX4352/MAX4353/
MAX4354
-2
-3
-4
-5
-6
-7
100k
1M 10M 100M
FREQUENCY (Hz)
1G
GAIN FLATNESS vs. FREQUENCY
0.5
0.4
0.3
0.2
0.1
MAX4452/MAX4453/
MAX4454
0
-0.1 MAX4352/MAX4353/
-0.2 MAX4354
-0.3
-0.4
-0.5
10k
100k 1M 10M 100M
FREQUENCY (Hz)
1G
_______________________________________________________________________________________ 5
5 Page 
Low-Cost, +3V/+5V, 620µA, 200MHz,
Single-Supply Op Amps with Rail-to-Rail Outputs
Detailed Description
The MAX4452/MAX4352 single, MAX4453/MAX4353
dual, and MAX4454/MAX4354 quad, single-supply, rail-
to-rail, voltage-feedback amplifiers achieve high slew
rates and wide bandwidths while consuming only
620µA per amplifier. Excellent speed/power ratio
makes them ideal for portable devices and high-fre-
quency signal applications.
Internal feedback around the output stage ensures low
open-loop output impedance, reducing gain sensitivity
to load variations. This feedback also produces
demand-driven current bias to the output transistors.
Rail-to-Rail Outputs, Ground-Sensing Input
The input common-mode range extends from (VEE -
0.1V) to (VCC - 1.5V) 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.
The output swings to within 180mV of either power-sup-
ply rail with a 1kΩ load. The input ground-sensing and
the rail-to-rail output substantially increase the dynamic
range.
Output Capacitive Loading and Stability
The MAX4452/MAX4453/MAX4454/MAX4352/MAX4353/
MAX4354 are optimized for AC performance. They are
not designed to drive highly reactive loads. Such loads
decrease phase margin and may produce excessive
ringing and oscillation. The use of an isolation resistor
eliminates this problem (Figure 1). Figure 2 is a graph
of the Optimal Isolation Resistor (RISO) vs. Capacitive
Load.
Applications Information
Choosing Resistor Values
Unity-Gain Configuration
The MAX4452/MAX4453/MAX4454 are internally com-
pensated for unity gain. When configured for unity gain,
a 24Ω feedback resistor (RF) is recommended. This
resistor improves AC response by reducing the Q of
the parallel LC circuit formed by the parasitic feedback
capacitance and inductance.
Inverting and Noninverting Configurations
Select the gain-setting feedback (RF) and input (RG)
resistor values that best fit the application. Large resis-
tor values increase voltage noise and interact with the
amplifier’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 2pF of amplifier input capaci-
tance and 1pF of PC board capacitance, causes a pole
at 106MHz. Since this pole is within the amplifier band-
width, it jeopardizes stability. Reducing the 1kΩ resis-
tors to 100Ω extends the pole frequency to 1.06GHz,
but could limit output swing by adding 200Ω in parallel
with the amplifier’s load resistor.
Note: For high-gain applications where output offset
voltage is a consideration, choose RS to be equal to
the parallel combination of RF and RG (Figures 3a and
3b).
3b):
RS
=
RF × RG
RF + RG
RG RF
VIN
RBIN
RISO
VOUT
CL
Figure 1. Driving a Capacitive Load Through an Isolation
Resistor
ISOLATION RESISTANCE
vs. CAPACITIVE LOAD
30
28
26
24
22
20
18
16
14
12
10
0
50 100
CLOAD (pF)
150
Figure 2. Optimal Isolation Resistor vs. Capacitive Load
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet MAX4354.PDF ] | |
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