General Description
The MAX4245/MAX4246/MAX4247 family of low-cost op
amps offer rail-to-rail inputs and outputs, draw only 320µA
of quiescent current, and operate from a single +2.5V
to +5.5V supply. For additional power conservation, the
MAX4245/MAX4247 offer a low-power shutdown mode
that reduces supply current to 50nA, and puts the ampli-
fiers outputs in a high-impedance state. These devices
are unity-gain stable with a 1MHz gain-bandwidth prod
uct driving capacitive loads up to 470pF.
The MAX4245/MAX4246/MAX4247 family is specified
from -40°C to +125°C, making them suitable for use in
a variety of harsh environments. The MAX4245 single
amplifier is available in ultra-small 6-pin SC70 and space-
saving 6-pin SOT23 packages. The MAX4246 dual
amplifier is available in 8-pin SOT23, SO, and µMAX®
packages. The MAX4247 dual amplifier comes in a tiny
10-pin µMAX package.
Applications
●Portable Communications
●Single-Supply Zero-Crossing Detectors
●Instruments and Terminals
●Electronic Ignition Modules
●Infrared Receivers
●Sensor-Signal Detection
Features
●Rail-to-Rail Input and Output Voltage Swing
●50nA (max) Shutdown Mode (MAX4245/MAX4247)
●320µA (typ) Quiescent Current Per Amplifier
●Single +2.5V to +5.5V Supply Voltage Range
● 110dB Open-Loop Gain with 2kΩ Load
● 0.01% THD with 100kΩ Load
●Unity-Gain Stable up to CLOAD = 470pF
●No Phase Inversion for Overdriven Inputs
●Available in Space-Saving Packages
6-Pin SC70 or 6-Pin SOT23 (MAX4245)
8-Pin SOT23/SO or 8-Pin µMAX (MAX4246)
10-Pin µMAX (MAX4247)
Pin Configurations continued at end of datat sheet.
19-2016; Rev 3; 5/14
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
μMAX is a registered trademark of Maxim Integrated Products, Inc.
PART TEMP RANGE PIN-
PACKAGE
TOP
MARK
MAX4245AXT+T -40°C to +125°C 6 SC70 AAZ
MAX4245AUT+T -40°C to +125°C 6 SOT23 AAUB
MAX4246AKA+T -40°C to +125°C 8 SOT23 AAIN
MAX4246ASA+T -40°C to +125°C 8 SO —
MAX4246AUA+T -40°C to +125°C 8 µMAX —
MAX4247AUB+T -40°C to +125°C 10 µMAX —
PART AMPLIFIERS
PER PACKAGE
SHUTDOWN
MODE
MAX4245AXT 1 Yes
MAX4245AUT 1 Yes
MAX4246AKA 2 No
MAX4246ASA 2 No
MAX4246AUA 2 No
MAX4247AUB 2 Yes
VSS
OUTIN-
1 6 VDD
5
IN+ MAX4245
SC70-6/SOT23-6
TOP VIEW
2
3 4
1
2
3
4
8
7
6
5
VDD
OUTB
INB-
INB+VSS
INA+
INA-
OUTA
MAX4246
SOT23-8/µMAX-8
SHDN
+
+
MAX4245/MAX4246/
MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
Ordering Information
Selector Guide
Pin Congurations
Power-Supply Voltage (VDD to VSS) .......................-0.3V to +6V
All Other Pins ................................(VSS - 0.3V) to (VDD + 0.3V)
Output Short-Circuit Duration
(OUT shorted to VSS or VDD) .............................. Continuous
Continuous Power Dissipation (TA = +70°C)
6-Pin SC70 (derate 3.1mW/°C above +70°C) .............245mW
6-Pin SOT23 (derate 8.7mW/°C above +70°C) ..........695mW
8-Pin SO (derate 5.9mW/°C above +70°C) ................. 471mW
8-Pin SOT23 (derate 9.1mW/°C above +70°C) ..........727mW
8-Pin µMAX (derate 4.5mW/°C above +70°C) ............362mW
10-Pin µMAX (derate 5.6mW/°C above +70°C) ..........444mW
Operating Temperature Range ......................... -40°C to +125°C
Junction Temperature ...................................................... +150°C
Storage Temperature Range ............................ -65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
(VDD = +2.7V, VSS = 0V, VCM = 0V, VOUT = VDD/2, RL connected from OUT to VDD /2, SHDN_ = VDD (MAX4245/MAX4247 only),
TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range VDD Inferred from PSRR test 2.5 5.5 V
Supply Current (Per Amplier) IDD
VDD = +2.7V 320 650 µA
VDD = +5.5V 375 700
Supply Current in Shutdown ISHDN_ SHDN_ = VSS (Note 2) 0.05 0.5 µA
Input Offset Voltage VOS VSS - 0.1V ≤ VCM ≤ VDD + 0.1V ±0.4 ±1.5 mV
Input Bias Current IBVSS - 0.1V ≤ VCM ≤ VDD + 0.1V ±10 ±50 nA
Input Offset Current IOS VSS - 0.1V ≤ VCM ≤ VDD + 0.1V ±1 ±6 nA
Input Resistance RIN |VIN+ - VIN-| ≤ 10mV 4000 kΩ
Input Common-Mode Voltage
Range VCM Inferred from CMRR test VSS - 0.1 VDD + 0.1 V
Common-Mode Rejection Ratio CMRR VSS - 0.1V ≤ VCM ≤ VDD + 0.1V 65 80 dB
Power-Supply Rejection Ratio PSRR 2.5V ≤ VDD ≤ 5.5V 75 90 dB
Large-Signal Voltage Gain AV
VSS + 0.05V ≤ VOUT ≤ VDD - 0.05V,
RL = 100kΩ 120
dB
VSS + 0.2V ≤ VOUT ≤ VDD - 0.2V,
RL = 2kΩ 95 110
Output Voltage Swing High VOH Specied as
VDD - VOUT
RL = 100kΩ 1mV
RL = 2kΩ 35 60
Output Voltage Swing Low VOL Specied as
VOUT - VSS
RL = 100kΩ 1mV
RL = 2kΩ 30 60
Output Short-Circuit Current IOUT(SC) VDD = +5.0V Sourcing 11 mA
Sinking 30
Output Leakage Current in
Shutdown IOUT(SH)
Device in Shutdown Mode
(SHDN_ = VSS), VSS ≤ VOUT ≤ VDD
(Note 2)
±0.01 ±0.5 µA
SHDN_ Logic Low VIL (Note 2) 0.3 x VDD V
SHDN_ Logic High VIH (Note 2) 0.7 x VDD V
SHDN_ Input Current IL/IHVSS ≤ SHDN_ ≤ VDD (Note 2) 0.5 50 nA
MAX4245/MAX4246/
MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
www.maximintegrated.com Maxim Integrated
│
2
Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
(VDD = +2.7V, VSS = 0V, VCM = 0V, VOUT = VDD/2, RL connected from OUT to VDD /2, SHDN_ = VDD (MAX4245/MAX4247 only),
TA = -40°C to +125°C, unless otherwise noted.) (Note 1)
(VDD = +2.7V, VSS = 0V, VCM = 0V, VOUT = VDD/2, RL connected from OUT to VDD /2, SHDN_ = VDD (MAX4245/MAX4247 only),
TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range VDD Inferred from PSRR test 2.5 5.5 V
Supply Current (Per Amplier) IDD VDD = +2.7V 800 µA
Supply Current in Shutdown ISHDN_ SHDN_ = VSS (Note 2) 1 µA
Input Offset Voltage VOS VSS ≤ VCM ≤ VDD (Note 4) ±3.0 mV
Input Offset Voltage Drift TCVOS VSS ≤ VCM ≤ VDD (Note 4) ±2 µV/°C
Input Bias Current IBVSS ≤ VCM ≤ VDD (Note 4) ±100 nA
Input Offset Current IOS VSS ≤ VCM ≤ VDD (Note 4) ±10 nA
Input Common-Mode
Voltage Range VCM Inferred from CMRR test (Note 4) VSS VDD V
Common-Mode Rejection Ratio CMRR VSS ≤ VCM ≤ VDD (Note 4) 60 dB
Power-Supply Rejection Ratio PSRR 2.5V ≤ VDD ≤ 5.5V 70 dB
Large-Signal Voltage Gain AVVSS + 0.2V ≤ VOUT ≤ VDD - 0.2V,
RL = 2kΩ 85 dB
Output Voltage Swing High VOH Specied as VDD - VOUT, RL = 2kΩ 90 mV
Output Voltage Swing Low VOL Specied as VOUT - VSS, RL = 2kΩ 90 mV
Output Leakage Current in
Shutdown
IOUT
(SH)
Device in Shutdown Mode (SHDN_ = VSS),
VSS ≤ VOUT ≤ VDD (Note 3) ±1.0 µA
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Gain-Bandwidth Product GBW 1.0 MHz
Phase Margin ΦM70 degrees
Gain Margin GM20 dB
Slew Rate SR 0.4 V/µs
Input Voltage-Noise Density enf = 10kHz 52 nV/√Hz
Input Current-Noise Density inf = 10kHz 0.1 pA/√Hz
Capacitive-Load Stability CLOAD AV = 1 (Note 3) 470 pF
Shutdown Delay Time t(SH) (Note 2) 3 µs
Enable Delay Time t(EN) (Note 2) 4 µs
Power-On Time tON 4 µs
Input Capacitance CIN 2.5 pF
Total Harmonic Distortion THD f = 10kHz, VOUT = 2VP-P, AV = +1,
VDD = +5.0V, Load = 100kΩ to VDD/2 0.01 %
Settling Time to 0.01% tSVOUT = 4V step, VDD = +5.0V, AV = +1 10 µs
MAX4245/MAX4246/
MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
www.maximintegrated.com Maxim Integrated
│
3
Electrical Characteristics
Electrical Characteristics (continued)
(VDD = +2.7V, VSS = 0V, VCM = 0V, VOUT = VDD/2, RL connected from OUT to VDD /2, SHDN_ = VDD (MAX4245/MAX4247 only),
TA = +25°C, unless otherwise noted.) (Note 1)
Note 1: Specifications are 100% tested at TA = +25°C. All temperature limits are guaranteed by design.
Note 2: Shutdown mode is only available in MAX4245 and MAX4247.
Note 3: Guaranteed by design, not production tested.
Note 4: For -40°C to +85°C, Input Common-Mode Range is VSS - 0.1V ≤ VCM ≤ VDD + 0.1V.
(VDD = 2.7V, VSS = VCM = 0V, VOUT = VDD / 2, no load, TA = +25°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SHDN_ Logic Low VIL (Note 2) 0.3 x VDD V
SHDN_ Logic High VIH (Note 2) 0.7 x VDD V
SHDN_ Input Current IL/IHVSS ≤ SHDN_ ≤ VDD (Notes 2, 3) 100 nA
0
40
120
80
160
200
MAX4245/MAX4247
SHUTDOWN SUPPLY CURRENT
PER AMPLIFIER vs. TEMPERATURE
MAX4245 toc02
TEMPERATURE (°C)
ISHDN (nA)
-40 7015 125
0
100
50
200
150
300
250
350
-40 15 70 125
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX4245 toc05
TEMPERATURE (°C)
VOS (µV)
VDD = 5.5V
VDD = 2.5V
0
200
100
400
300
500
600
0 1.00.5 1.5 2.0 2.5
INPUT OFFSET VOLTAGE
vs. COMMON-MODE VOLTAGE
MAX4245 toc03
VCM (V)
VOS (µV)
VDD = 2.5V TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
-15
-5
-10
5
0
15
10
20
0 2 31 4 5 6
INPUT BIAS CURRENT
vs. COMMON-MODE VOLTAGE
MAX4245 toc06
VCM (V)
IBIAS (nA)
TA = -40°C
TA = +25°C
TA = +125°C
VDD = 5.5V
TA = +85°C
200
300
250
400
350
450
500
2.0 3.5 4.02.5 3.0 4.5 5.0 5.5
SUPPLY CURRENT PER AMPLIFIER
vs. SUPPLY VOLTAGE
MAX4245 toc01
VDD (V)
IDD (µA)
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
0
200
100
400
300
500
600
0 2 31 4 5 6
INPUT OFFSET VOLTAGE
vs. COMMON-MODE VOLTAGE
MAX4245 toc04
V
CM
(V)
VOS (mV)
VDD = 5.5V
TA = -40°C
TA = +25°C
TA = +85°C
TA = +125°C
MAX4245/MAX4246/
MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
www.maximintegrated.com Maxim Integrated
│
4
Electrical Characteristics (continued)
Typical Operating Characteristics
(VDD = 2.7V, VSS = VCM = 0V, VOUT = VDD / 2, no load, TA = +25°C, unless otherwise noted.)
0
10
5
25
20
15
30
35
45
40
50
0 1.0 1.50.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
OUTPUT SINK CURRENT
vs. OUTPUT VOLTAGE
MAX4245 toc08
VOUT (V)
ISINK (mA)
VDD = 2.5V
VDD = 5.5V
0
10
30
20
40
OUTPUT SWING HIGH
vs. TEMPERATURE
MAX4245 toc09
TEMPERATURE (°C)
VDD - VOUT (mV)
-40 7015 125
RL = 2kΩ
RL = 100kΩ
0
10
30
20
40
OUTPUT SWING LOW
vs. TEMPERATURE
MAX4245 toc10
TEMPERATURE (°C)
V
OUT
- V
SS
(mV)
-40 7015 125
RL = 2kΩ
RL = 100kΩ
0.001 10 10000.10.01 1 100 10,000
CROSSTALK vs. FREQUENCY
MAX4245 toc11
FREQUENCY (kHz)
CROSSTALK (dB)
-130
-110
-90
-70
-50 0
-100
0.1 10 10 100 1000 10,000
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
-80
MAX4245 toc12
FREQUENCY (kHz)
PSRR (dB)
-60
-40
-20
-90
-70
-50
-30
-10
100 1000 100,000
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. INPUT FREQUENCY
MAX4245 toc13
INPUT FREQUENCY (Hz)
THD + N (%)
1
0.1
0.0001
0.01
0.001
10,000
RL = 100k
Ω
AV = +1
VOUT = 2VP-P
VDD = 5.0V
0
4
2
8
6
12
10
14
0 1.0 1.5 2.00.5 2.5 3.0 3.5 4.0 4.5 5.0 5.5
OUTPUT SOURCE CURRENT
vs. OUTPUT VOLTAGE
MAX4245 toc07
VOUT (V)
ISOURCE (mA)
VDD = 5.5V
VDD = 2.5V
10
0 1 2 3 4 5
1
0.1
0.01
0.001
0.0001
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. AMPLITUDE
MAX4245 toc14
OUTPUT VOLTAGE (VP-P)
THD + N (%)
RL = 100k
Ω
AV = +1
fIN = 1kHz
VDD = 5.0V
80
0.1 1 10 100 1000 10,000
40
20
0
-20
-40
GAIN AND PHASE vs. FREQUENCY
MAX4245 toc15
FREQUENCY (kHz)
GAIN (dB)
60
90
-30
-90
-150
-210
-270
30
PHASE (deg)
PHASE
GAIN
NO LOAD
MAX4245/MAX4246/
MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
Maxim Integrated
│
5
www.maximintegrated.com
Typical Operating Characteristics
(VDD = 2.7V, VSS = VCM = 0V, VOUT = VDD / 2, no load, TA = +25°C, unless otherwise noted.)
80
0.1 1 10 100 1000 10,000
40
20
0
-20
-40
GAIN AND PHASE vs. FREQUENCY
MAX4245 toc16
FREQUENCY (kHz)
GAIN (dB)
60
90
-30
-90
-150
-210
-270
30
PHASE (deg)
PHASE
GAIN
2kΩ || 470pF
4µs/div
SMALL-SIGNAL TRANSIENT
RESPONSE (NONINVERTING)
IN
OUT
20mV/div
20mV/div
MAX4245 toc17
4µs/div
SMALL-SIGNAL TRANSIENT
RESPONSE (INVERTING)
IN
OUT
20mV/div
20mV/div
MAX4245 toc18
40µs/div
LARGE-SIGNAL TRANSIENT
RESPONSE (NONINVERTING)
IN
OUT
2V/div
2V/div
MAX4245 toc19
VDD = 5V
40µs/div
LARGE-SIGNAL TRANSIENT
RESPONSE (INVERTING)
IN
OUT
2V/div
2V/div
MAX4245 toc20
VDD = 5V
MAX4245/MAX4246/
MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
Maxim Integrated
│
6
www.maximintegrated.com
Typical Operating Characteristics (continued)
Detailed Description
Rail-to-Rail Input Stage
The MAX4245/MAX4246/MAX4247 have rail-to-rail input
and output stages that are specifically designed for low-
voltage, single-supply operation. The input stage consists
of composite NPN and PNP differential stages, which
operate together to provide a common-mode range
extending to both supply rails. The crossover region
of these two pairs occurs halfway between VDD and
VSS. The input offset voltage is typically ±400µV. Low-
operating supply voltage, low supply current and rail-to-
rail outputs make this family of operational amplifiers an
excellent choice for precision or general-purpose, low-
voltage, battery-powered systems.
Since the input stage consists of NPN and PNP pairs, the
input bias current changes polarity as the common-mode
voltage passes through the crossover region. Match the
effective impedance seen by each input to reduce the
offset error caused by input bias currents flowing through
external source impedance (Figures 1a and 1b).
The combination of high-source impedance plus input
capacitance (amplifier input capacitance plus stray capac-
itance) creates a parasitic pole that can produce an
underdamped signal response. Reducing input capaci-
tance or placing a small capacitor across the feedback
resistor improves response in this case.
The MAX4245/MAX4246/MAX4247 family’s inputs are
protected from large differential input voltages by internal
5.3kΩ series resistors and back-to-back triple-diode stacks
across the inputs (Figure 2). For differential-input voltages
Figure 1a. Minimizing Offset Error Due to Input Bias Current
(Noninverting)
Figure 1b. Minimizing Offset Error Due to Input Bias Current
(Inverting)
PIN NAME FUNCTION
MAX4245 MAX4246 MAX4247
1 — — IN+ Noninverting Input
2 4 4 VSS Ground or Negative Supply
3 — — IN- Inverting Input
4 — — OUT Amplier Output
5 — — SHDN Shutdown
6 8 10 VDD Positive Supply
— 1 1 OUTA Amplier Output Channel A
— 2 2 INA- Inverting Input Channel A
— 3 3 INA+ Noninverting Input Channel A
— 5 7 INB+ Noninverting Input Channel B
— 6 8 INB- Inverting Input Channel B
— 7 9 OUTB Amplier Output Channel B
— — 5 SHDNA Shutdown Channel A
— — 6 SHDNB Shutdown Channel B
IN
R3
R3 = R1
║R2
R1 R2
VDD
IN
R3
R3 = R1
║
R2
R1 R2
VDD
MAX4245/MAX4246/
MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
www.maximintegrated.com Maxim Integrated
│
7
Pin Description
much less than 2.1V (triple-diode drop), input resistance is
typically 4MΩ. For differential voltages greater than 2.1V,
input resistance is around 10.6kΩ, and the input bias cur-
rent can be approximated by the following equation:
IB = (VDIFF - 2.1V)/10.6kΩ
In the region where the differential input voltage approach-
es 2.1V, the input resistance decreases exponentially
from 4MΩ to 10.6kΩ as the diodes begin to conduct. It fol-
lows that the bias current increases with the same curve.
In unity-gain configuration, high slew-rate input signals
may capacitively couple to the output through the triple-
diode stacks.
Rail-to-Rail Output Stage
The MAX4245/MAX4246/MAX4247 can drive a 2kΩ load
and still typically swing within 35mV of the supply rails.
Figure 3 shows the output voltage swing of the MAX4245
configured with AV = -1V/V.
Applications Information
Power-Supply Considerations
The MAX4245/MAX4246/MAX4247 operate from a single
+2.5V to +5.5V supply (or dual ±1.25V to ±2.75V sup-
plies) and consume only 320µA of supply current per
amplifier. A 90dB power-supply rejection ratio allows the
amplifiers to be powered directly off a decaying battery
voltage, simplifying design and extending battery life.
Power-Up
The MAX4245/MAX4246/MAX4247 output typically set-
tles within 4µs after power-up. Figure 4 shows the output
voltage on power-up and power-down.
Shutdown Mode
The MAX4245/MAX4247 feature a low-power shutdown
mode. When SHDN_ is pulled low, the supply current
drops to 50nA per amplifier, the amplifier is disabled, and
the output enters a high-impedance state. Pulling SHDN_
high enables the amplifier. Figure 5 shows the MAX4245/
MAX4247’s shutdown waveform.
Due to the output leakage currents of three-state devices
and the small internal pullup current for SHDN_, do not
leave SHDN_ open/high-impedance. Leaving SHDN_
open may result in indeterminate logic levels, and could
adversely affect op amp operation. The logic threshold for
SHDN_ is referred to VSS. When using dual supplies, pull
SHDN_ to VSS, not GND, to shut down the op amp.
Driving Capacitive Loads
The MAX4245/MAX4246/MAX4247 are unity-gain stable
for loads up to 470pF. Applications that require greater
capacitive drive capability should use an isolation resistor
Figure 2. Input Protection Circuit
Figure 3. Rail-to-Rail Input/Output Voltage Range
Figure 4. Power-Up/Power-Down Waveform
IN-
5.3kΩ
IN+
5.3kΩOUT
IN 2V/div
2V/div
400µs/div
OUT
VDD
2V/div
2V/div
10µs/div
MAX4245/MAX4246/
MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
www.maximintegrated.com Maxim Integrated
│
8
between the output and the capacitive load (Figures 6a, 6b,
6c). Note that this alternative results in a loss of gain accu-
racy because RISO forms a voltage divider with the RLOAD.
Power-Supply Bypassing and Layout
The MAX4245/MAX4246/MAX4247 family operates from
either a single +2.5V to +5.5V supply or dual ±1.25V to
±2.75V supplies. For single-supply operation, bypass the
power supply with a 100nF capacitor to VSS (in this case
GND). For dual-supply operation, both the VDD and the
VSS supplies should be bypassed to ground with separate
100nF capacitors.
Good PC board layout techniques optimize performance
by decreasing the amount of stray capacitance at the op
amp?s inputs and output. To decrease stray capacitance,
minimize trace lengths and widths by placing external
components as close to the device as possible. Use
surface-mount components when possible.
Figure 5. Shutdown Waveform
Figure 6b. Pulse Response Without Isolating Resistor
Figure 6c. Pulse Response With Isolating Resistor
Figure 6a. Using a Resistor to Isolate a Capacitive Load from
the Op Amp
OUT
SHDN
2V/div
2V/div
400µs/div
OUT
IN
100mV/div
100mV/div
10µs/div
RISO = 0Ω
RL = 2kΩ
CL = 2200pF
OUT
IN
100mV/div
100mV/div
10µs/div
RISO = 100Ω
RL = 2kΩ
CL = 2200pF
OUT
IN
RISO
RLCL
TOP VIEW
VDD
OUTB
INB-
INB+VSS
INA+
INA-
OUTA
µMAX
1
2
3
4
10
9
8
7
5 6SHDNA SHDNB
MAX4247
+
MAX4245/MAX4246/
MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
www.maximintegrated.com Maxim Integrated
│
9
Pin Congurations (continued)
Chip Information
PROCESS: BiCMOS
PACKAGE TYPE PACKAGE CODE DOCUMENT NO. LAND PATTERN NO.
6 SOT23 U6+4 21-0058 90-0175
6 SC70 X6SN+1 21-0077 90-0189
8 SOT23 K8+5 21-0078 90-0176
8 SO S8+4 21-0041 90-0096
8 µMAX U8+1 21-0036 90-0092
10 µMAX U10+2 21-0061 90-0330
MAX4245/MAX4246/
MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
www.maximintegrated.com Maxim Integrated
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10
Package Information
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 5/01 Initial release —
211/11 Added lead-free data to Ordering Information. 1
3 5/14 Updated the General Description. 1
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
MAX4245/MAX4246/
MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
© 2014 Maxim Integrated Products, Inc.
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11
Revision History
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Maxim Integrated:
MAX4245AUT+T MAX4245AXT+T MAX4246AKA+T MAX4246ASA+ MAX4246ASA+T MAX4246AUA+
MAX4246AUA+T MAX4247AUB+ MAX4247AUB+T MAX4245AUT-T MAX4245AXT-T MAX4246AKA-T
MAX4246AUA MAX4246AUA-T
