MAX4243 Maxim, MAX4243 Datasheet

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MAX4243

Manufacturer Part Number
MAX4243
Description
The MAX4240–MAX4244 family of micropower op amps operate from a single +1
Manufacturer
Maxim
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MAX4243ESD
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
MAX4243EUB
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
MAX4243EUB+
Manufacturer:
MICROCHIP
Quantity:
15 000
Beyond-the-Rails is a trademark and µMAX is a registered
trademark of Maxim Integrated Products, Inc.
19-1343; Rev 3; 9/06
The MAX4240–MAX4244 family of micropower op amps
operate from a single +1.8V to +5.5V supply or dual
±0.9V to ±2.75V supplies and have Beyond-the-Rails™
inputs and rail-to-rail output capabilities. These ampli-
fiers provide a 90kHz gain-bandwidth product while
using only 10µA of supply current per amplifier. The
MAX4241/MAX4243 have a low-power shutdown mode
that reduces supply current to less than 1µA and forces
the output into a high-impedance state. Although the
minimum operating voltage is specified at +1.8V, these
devices typically operate down to +1.5V. The combina-
tion of ultra-low-voltage operation, beyond-the-rails
inputs, rail-to-rail outputs, and ultra-low power con-
sumption makes these devices ideal for any portable/
two-cell battery-powered system.
These amplifiers have an input common-mode range
that extends 200mV beyond each rail, and their out-
puts typically swing to within 9mV of the rails with a
100kΩ load. Beyond-the-rails input and rail-to-rail out-
put characteristics allow the full power-supply voltage
to be used for signal range. The combination of low
input offset voltage, low input bias current, and high
open-loop gain makes them suitable for low-power/low-
voltage precision applications.
The MAX4240 is offered in a space-saving 5-pin
SOT23 package. All specifications are guaranteed
over the -40°C to +85°C extended temperature range.
Two-Cell Battery-
Powered Systems
Portable/Battery-Powered
Electronic Equipment
Digital Scales
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.
MAX4240
MAX4241
MAX4242
MAX4243
MAX4244
PART
NO. OF
AMPS
1
1
2
2
4
________________________________________________________________ Maxim Integrated Products
SHUTDOWN
General Description
Single/Dual/Quad, +1.8V/10µA, SOT23,
Yes
Yes
Strain Gauges
Sensor Amplifiers
Cellular Phones
Notebook Computers
PDAs
Selector Guide
Applications
5-pin SOT23
8-pin µMAX/SO
8-pin µMAX/SO
10-pin µMAX,
14-pin SO
14-pin SO
PIN-PACKAGE
Beyond-the-Rails Op Amps
♦ Ultra-Low-Voltage Operation:
♦ Ultra-Low Power Consumption:
♦ Beyond-the-Rails Input Common-Mode Range
♦ Outputs Swing Rail-to-Rail
♦ No Phase Reversal for Overdriven Inputs
♦ 200µV Input Offset Voltage
♦ Unity-Gain Stable for Capacitive Loads up to 200pF
♦ 90kHz Gain-Bandwidth Product
♦ Available in Space-Saving 5-Pin SOT23 and
MAX4240EUK-T -40°C to +85°C
MAX4241EUA
MAX4241ESA
MAX4242EUA
MAX4242ESA
MAX4243EUB
MAX4243ESD
MAX4244ESD
Pin Configurations continued at end of data sheet.
8-Pin µMAX
TOP VIEW
Guaranteed Down to +1.8V
Typical Operation to +1.5V
10µA Supply Current per Amplifier
1µA Shutdown Mode (MAX4241/MAX4243)
Up to 200,000 Hours Operation from Two AA
Alkaline Cells
PART
®
OUT
Packages
V
IN+
TEMP RANGE
-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
EE
1
2
3
Ordering Information
SOT23-5
MAX4240
Pin Configurations
PIN-
PACKAGE
5 SOT23-5
8 µMAX
8 SO
8 µMAX
8 SO
10 µMAX
14 SO
14 SO
4
5
V
IN-
CC
Features
MARK
ACCS
TOP
1

Related parts for MAX4243

MAX4243 Summary of contents

Page 1

... These ampli- fiers provide a 90kHz gain-bandwidth product while using only 10µA of supply current per amplifier. The MAX4241/MAX4243 have a low-power shutdown mode that reduces supply current to less than 1µA and forces the output into a high-impedance state. Although the minimum operating voltage is specified at +1 ...

Page 2

... 5.0V CC MAX4241ESA MAX4242ESA/MAX4243ESD/ - 0.2V) ≤ V ≤ MAX4244ESD + 0.2V) CC MAX4240EUK/MAX424_EUA/ MAX4243EUB < 1.0V IN+ IN > 2.5V IN+ IN- MAX4241ESA MAX4242ESA/MAX4243ESD/ = 1.8V CC MAX4244ESD MAX4240EUK/MAX424_EUA/ MAX4243EUB MAX4241ESA MAX4242ESA/MAX4243ESD/ MAX4244ESD = 5.0V CC MAX4240EUK/MAX424_EUA/ MAX4243EUB / 2, SHDN = +25°C, unless MIN TYP MAX UNITS 1.8 5 µ 1.0 1.5 µA 2.0 3.0 ±0.20 ±0.75 ±0.20 ±0.88 mV ± ...

Page 3

... Gain-Bandwidth GBW Product Phase Margin m Gain Margin G m Slew Rate SR _______________________________________________________________________________________ Beyond-the-Rails Op Amps = 100kΩ tied to V OUT CC L CONDITIONS MAX4241ESA MAX4242ESA/MAX4243ESD/ MAX4244ESD 1.8V ≤ V ≤ 5.5V CC MAX4240EUK/MAX424_EUA/ MAX4243EUB 0.2V) ≤ V ≤ EE OUT (V - 0.2V 5. 1.8V CC Specified 5. 1.8V ...

Page 4

... V OUT CONDITIONS 5.0V CC MAX4241ESA MAX4242ESA/MAX4243ESD/ - 0.2V) ≤ V ≤ MAX4244ESD + 0.2V) CC MAX4240EUK/MAX424_EUA/ MAX4243EUB / 2, SHDN = +25°C, unless MIN TYP MAX 70 0.05 200 50 150 200 3 = +1V/V 0. SHDN = unless oth MIN MAX MIN ...

Page 5

... Beyond-the-Rails Op Amps = 100kΩ tied to V OUT CC L CONDITIONS MAX4241ESA MAX4242ESA/MAX4243ESD/ MAX4244ESD V = 1.8V CC MAX4240EUK/MAX424_EUA/ MAX4243EUB MAX4241ESA MAX4242ESA/MAX4243ESD/ MAX4244ESD V = 5.0V CC MAX4240EUK/MAX424_EUA/ MAX4243EUB MAX4241ESA MAX4242ESA/MAX4243ESD/ MAX4244ESD 1.8V ≤ V ≤ 5.5V CC MAX4240EUK/MAX424_EUA/ MAX4243EUB 0.2V) ≤ V ≤ OUT (V - 0.2V 5. 1.8V CC Specified ...

Page 6

... SHDN = Current (Note 2) Note 1: The MAX4240EUK, MAX4241EUA, MAX4242EUA, and MAX4243EUB specifications are 100% tested at T temperature limits are guaranteed by design. Note 2: Shutdown mode applies to the MAX4241/MAX4243 only. Note 3: Input bias current and input offset current are tested with V Note 4: Tested over the specified input common-mode range. ...

Page 7

Single/Dual/Quad, +1.8V/10µA, SOT23, ____________________________________Typical Operating Characteristics (continued +5.0V INPUT BIAS CURRENT vs. COMMON-MODE VOLTAGE (V = 5.5V +5.5V CC 2.5 0 ...

Page 8

... +1.8V +1.8V -60 -40 - 100 TEMPERATURE (°C) MAX4242/MAX4243/MAX4244 CROSSTALK vs. FREQUENCY - 10k L -70 -80 -90 -100 -110 10 100 1k 10k FREQUENCY (Hz) LOAD RESISTOR vs. CAPACITIVE LOAD 1000 10% OVE RSHOOT REGIO N OF MAR GINAL STABILITY ...

Page 9

Single/Dual/Quad, +1.8V/10µA, SOT23 +5.0V /2, V SHDN _______________________________________________________________________________________ Beyond-the-Rails Op Amps Typical Operating Characteristics (continued 100kΩ / +25°C unless ...

Page 10

... Figure 2. Input Protection Circuit 10 ______________________________________________________________________________________ The input offset Figure 1a. Minimizing Offset Error Due to Input Bias Current (Noninverting Figure 1b. Minimizing Offset Error Due to Input Bias Current (Inverting) MAX4240 MAX4241 MAX4242 MAX4243 MAX4244 MAX4240 MAX4241 MAX4242 MAX4243 MAX4244 ...

Page 11

... CC the output is indeterminant. The application circuit should allow for this initial delay. The MAX4241 (single) and MAX4243 (dual) feature a low-power shutdown mode. When the shutdown pin (SHDN) is pulled low, the supply current drops to 1µA per amplifier, the amplifier is disabled, and the outputs enter a high-impedance state ...

Page 12

... GND). When using dual supplies, pull SHDN to V enter shutdown mode. Load-Driving Capability The MAX4240–MAX4244 are fully guaranteed over tem- perature and supply voltage to drive a maximum resis- tive load of 10kΩ although heavier loads can CC be driven in many applications. The rail-to-rail output ...

Page 13

... Figure 8a Using a Resistor to Isolate a Capacitive Load from the Op Amp MAX4240-44 fig08b 50mV/div IN 50mV/div OUT Figure 8c. Pulse Response with Isolating Resistor supplies should be bypassed to ground with R ISO R L MAX4240 MAX4241 MAX4242 MAX4243 MAX4244 MAX4240-44 fig08c 100 s/div 100k , C = 700pF ...

Page 14

... The circuit consumes less power (but is more suscepti- CC ble to noise) with higher values of R1, R2, and R3 INPUT OUTPUT V IN Figure 10. Hysteresis Comparator Circuit Using the MAX4240–MAX4244 = [I x ( LOAD HYSTERESIS HYST OUT MAX4240 R2 V MAX4241 EE MAX4242 MAX4243 V EE MAX4244 ...

Page 15

... INB+ EE SO/ MAX 14 V OUTA CC 13 OUTB INA- 12 INB- INA+ 11 INB N.C. INB+ 9 SHDNB INB- 8 N.C. OUTB SO EE OUTA 1 10 INA- 2 MAX4243 INA SHDNA 5 MAX 1 14 OUTD 2 13 IND IND+ MAX4244 INC INC OUTC SO ...

Page 16

... Revision History Pages changed at Rev Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. ...

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