MAXIM MAX4400AXK-T

19-1599; Rev 0; 1/00
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
The MAX4400–MAX4403 low-cost, general-purpose op
amps offer Rail-to-Rail® outputs, draw only 320µA of quiescent current, and operate from a single +2.5V to +5.5V
supply. For additional power conservation, the MAX4401
offers a low-power shutdown mode that reduces supply
current to 1µA max and puts the amplifier’s outputs in a
high-impedance state. These devices deliver ±1.4mA of
output current and are unity-gain stable with a 1MHz gainbandwidth product driving capacitive loads up to 400pF.
The MAX4400–MAX4403 are specified to +125°C, making
them suitable for use in a variety of harsh environments,
such as automotive applications.
The MAX4400 single amplifier is available in ultra-small
5-pin SC70 and space-saving 5-pin SOT23 packages.
The single MAX4401 includes the shutdown feature and is
available in a 6-pin SC70. The MAX4402 is a dual amplifier
available in 8-pin SOT23 and SO packages. The
MAX4403 quad amplifier comes packaged in a 14-pin
TSSOP or SO.
Features
♦ Single +2.5V to +5.5V Supply Voltage Range
♦ 320µA Quiescent Current per Amplifier
♦ 1µA max Shutdown Mode (MAX4401)
♦ Available in Space-Saving Packages
5-Pin SC70 (MAX4400)
6-Pin SC70 (MAX4401)
8-Pin SOT23 (MAX4402)
♦ 110dB AVOL with 2kΩ Load
♦ 0.015% THD with 2kΩ Load
♦ Rail-to-Rail Output Voltage Swing
♦ 1.4mA of Sink and Source Load Current
♦ Unity-Gain Stable up to CLOAD = 400pF
♦ Ground-Sensing Inputs
Selector Guide
Ordering Information
PART
NO. OF AMPLIFIERS
PER PACKAGE
SHUTDOWN
MODE
PART
TEMP. RANGE
PINPACKAGE
MAX4400
1
No
MAX4400AXK-T
-40°C to +125°C
5 SC70-5
MAX4401
1
Yes
MAX4402
2
No
MAX4400AUK-T
MAX4401AXT-T
MAX4402AKA-T*
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
5 SOT23-5
6 SC70-6
8 SOT23-8
MAX4403
4
No
Applications
Single-Supply Zero-Crossing Detectors
MAX4402ASA*
-40°C to +125°C 8 SO
MAX4403AUD*
-40°C to +125°C 14 TSSOP
MAX4403ASD*
-40°C to +125°C 14 SO
*Future product—contact factory for availability.
Instruments and Terminals
TOP
MARK
AAG
ADNP
AAB
AADI
—
—
—
Pin Configurations
Portable Communications
Electronic Ignition Modules
Infrared Receivers
Sensor Signal Detection
MAX4400
IN+ 1
MAX4401
5 VDD
VSS 2
4 OUT
IN- 3
SC70-5/SOT23-5
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
IN+ 1
6 VDD
VSS 2
5 SHDN
IN- 3
4 OUT
SC70-6
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
MAX4400–MAX4403
General Description
MAX4400–MAX4403
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
ABSOLUTE MAXIMUM RATINGS
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)
5-Pin SC70 (derate 2.5mW/°C above +70°C) ............. 200mW
6-Pin SC70 (derate 2.27mW/°C above +70°C) ............181mW
5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW
8-Pin SOT23 (derate 7.52mW/°C above +70°C)..........602mW
8-Pin SO (derate 5.88mW/°C above +70°C)............... 471mW
14-Pin TSSOP (derate 8.33mW/°C above +70°C) ...... 667mW
14-Pin SO (derate 8.33mW/°C above +70°C)............. 667mW
Operating Temperature Range .........................-40°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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 = +5V, VSS = 0, VCM = 0, VOUT = VDD/2, RL = ∞ connected to VDD/2, SHDN = VDD (MAX4401 only), TA = +25°C, unless
otherwise noted.)
PARAMETER
SYMBOL
Supply Voltage Range
VDD
Supply Current per Amplifier
IDD
Supply Current in Shutdown
ISHDN
Input Offset Voltage
CONDITIONS
MIN
TYP
2.5
Inferred from PSRR test
VDD = 2.5V
320
VDD = 5.0V
400
SHDN = VSS (Note 1)
VOS
MAX
UNITS
5.5
V
700
µA
0.00002
1
µA
±0.8
±4.5
mV
pA
IB
(Note 2)
±0.1
±100
Input Offset Current
IOS
(Note 2)
±0.1
±100
Input Resistance
RIN
Differential or common mode
1000
Input Common-Mode Voltage
Range
VCM
Inferred from CMRR test
VSS
Common-Mode Rejection Ratio
CMRR
VSS ≤ VCM ≤ VDD - 1.4V
68
84
dB
Power-Supply Rejection Ratio
PSRR
2.5V ≤ VDD ≤ 5.5V
78
100
dB
Large-Signal Voltage Gain
AVOL
VSS + 0.3V ≤
VOUT ≤ VDD - 0.3V
RL = 100kΩ
Output Voltage High
VOH
Specified as
|VDD - VOH|
RL = 100kΩ
3
RL = 2kΩ
55
Output Voltage Low
VOL
Specified as
|VSS - VOL|
RL = 100kΩ
2
RL = 2kΩ
30
Input Bias Current
Output Short-Circuit Current
Shutdown Mode Output
Leakage
IOUTSHDN
RL = 2kΩ
VDD - 1.4
120
90
12
Sinking
30
Device in shutdown mode, SHDN = VSS,
VSS < VOUT < VCC (Note 1)
SHDN Logic Low
VIL
(Note 1)
SHDN Logic High
VIH
(Note 1)
200
75
mV
mV
mA
±1.0
0.3 · VDD
0.7 · VDD
µA
V
V
SHDN Input Current
IIL, IIH
Gain-Bandwidth Product
GBW
800
kHz
φM
70
degrees
20
dB
1
V/µs
Phase Margin
Gain Margin
Slew Rate
2
SR
SHDN = VDD or VSS (Notes 1, 2)
V
dB
110
Sourcing
pA
GΩ
±1
_______________________________________________________________________________________
±100
pA
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
(VDD = +5V, VSS = 0, VCM = 0, VOUT = VDD/2, RL = ∞ connected to VDD/2, SHDN = VDD (MAX4401 only), TA = +25°C, unless
otherwise noted.)
PARAMETER
Input Voltage Noise Density
SYMBOL
CONDITIONS
en
f = 10kHz
MIN
TYP
MAX
UNITS
36
nV/√Hz
in
f = 10kHz
1
fA/√Hz
Capacitive-Load Stability
CLOAD
AV = 1V/V
400
pF
Shutdown Delay Time
Input Current Noise Density
tSHDN
(Note 1)
0.4
µs
Enable Delay Time
tEN
(Note 1)
6
µs
Power-On Time
tON
5
µs
Input Capacitance
CIN
2.5
pF
Total Harmonic Distortion
Total Harmonic Distortion
Settling Time to 0.1%
THD
tS
f = 10kHz, VOUT =
2Vp-p, AV = 1V/V
RL = 100kΩ
0.009
RL = 2kΩ
0.015
%
7
VOUT = 2V step
µs
ELECTRICAL CHARACTERISTICS
(VDD = +5V, VSS = 0, VCM = 0, VOUT = VDD/2, RL = ∞ connected to VDD/2, TA = -40°C to +125°C, unless otherwise noted.) (Note 3)
PARAMETER
Supply Voltage Range
SYMBOL
VDD
CONDITIONS
MIN
TYP
2.5
Inferred from PSRR test
MAX
UNITS
5.5
V
Supply Current per Amplifier
IDD
800
µA
Input Offset Voltage
VOS
±6.5
mV
Input Offset Voltage Drift
±1
TCVOS
µV/°C
IB
(Note 2)
±100
pA
Input Offset Current
IOS
(Note 2)
±100
pA
Input Common-Mode Voltage
Range
VCM
Inferred from CMRR test
VSS
Common-Mode Rejection Ratio
CMRR
VSS ≤ VCM ≤ VDD - 1.5V
65
dB
Power-Supply Rejection Ratio
PSRR
2.5V ≤ VCC ≤ 5.5V
74
dB
Input Bias Current
Shutdown Mode Output
Leakage
SHDN Logic Low
SHDN Logic High
IOUTSHDN
Device in shutdown
mode, SHDN = VSS,
VSS < VOUT < VDD
(Note 1)
VIL
(Note 1)
VIH
(Note 1)
VDD - 1.5
-40°C to +85°C
±1.0
+85°C to +125°C
±5.0
V
µA
SHDN Input Current
IIL, IIH
SHDN = VDD or VSS (Notes 1, 2)
Large-Signal Voltage Gain
AVOL
VSS + 0.3V ≤ VOUT ≤ VDD - 0.3V, RL = 2kΩ
Output Voltage High
VOH
Output Voltage Low
VOL
0.3 · VDD
0.7 · VDD
V
V
±100
pA
Specified as |VDD - VOH|, RL = 2kΩ
250
mV
Specified as |VSS - VOL|, RL = 2kΩ
100
mV
85
dB
Note 1: Shutdown mode is only available in the 6-pin SC70 single op amp (MAX4401).
Note 2: Guaranteed by design.
Note 3: Specifications are 100% tested at TA = +25°C (exceptions noted). All temperature limits are guaranteed by design.
_______________________________________________________________________________________
3
MAX4400–MAX4403
ELECTRICAL CHARACTERISTICS (continued)
Typical Operating Characteristics
(VDD = +5V, VSS = 0, VCM = VDD/2, V SHDN = 5V, RL = ∞ connected to VDD/2, TA = +25°C, unless otherwise noted.)
GAIN AND PHASE
vs. FREQUENCY (NO LOAD)
1
100
10
10k 100k
1k
1M
10M
MAX4400 toc03
-10
PSRR (dB)
-30
-50
-70
-90
AVCL = +1000V/V
-110
1
10
100
FREQUENCY (Hz)
10k 100k
1k
1M
10
10M
100
1
0.1
100k
1M
400
VSHDN = VSS
10k
SUPPLY CURRENT (pA)
450
SUPPLY CURRENT (µA)
10
1M
MAX4400 toc05
500
MAX4400 toc4
100
10k
MAX4401
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
SUPPLY CURRENT vs. TEMPERATURE
1000
1k
FREQUENCY (Hz)
FREQUENCY (Hz)
OUTPUT IMPEDANCE
vs. FREQUENCY
OUTPUT IMPEDANCE (Ω)
10
MAX4400 toc06
AVCL = +1000V/V
80
60
40
20
0
-20
-40
-60
-80
-100
-120
-140
-160
-180
MAX4400 toc02
MAX4400 toc01
GAIN (dB)/PHASE (deg)
1k
100
350
10
0.01
0.001
300
10
100
1k
10k
100k
1M
1
-40 -20
0
FREQUENCY (Hz)
40
60
80
100 120
-40 -20
0
TEMPERATURE (°C)
MAX4401
OUTPUT LEAKAGE CURRENT
vs. TEMPERATURE
40
60
80
100 120
OUTPUT VOLTAGE SWING HIGH
vs. TEMPERATURE
1500
70
MAX4400 toc08
VSHDN = VSS
VOUT = VDD/2
20
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX4400 toc07
1M
20
1000
MAX4400 toc09
GAIN (dB)/PHASE (deg)
80
60
40
20
0
-20
-40
-60
-80
-100
-120
-140
-160
-180
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
GAIN AND PHASE vs. FREQUENCY
(CL = 400pF)
RL = 2kΩ to VDD/2
60
50
VOS (µV)
VDD -VOH (mV)
500
1k
ILEAK (pA)
MAX4400–MAX4403
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
0
-500
10
0
20
40
60
80
TEMPERATURE (°C)
4
10
0
-1500
-40 -20
100 120
30
20
-1000
0.1
40
-40 -20
0
20
40
60
80
TEMPERATURE (°C)
100 120
-40 -20
0
20
40
60
80
TEMPERATURE (°C)
_______________________________________________________________________________________
100 120
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
COMMON-MODE REJECTION RATIO
vs. TEMPERATURE
40
140
MAX4400 toc11
RL = 2kΩ to VDD/2
RL = 2kΩ
120
-70
30
20
100
GAIN (dB)
CMRR (dB)
VOL - VEE (mV)
-60
MAX4400 toc10
50
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
MAX4400 toc12
OUTPUT VOLTAGE SWING LOW
vs. TEMPERATURE
-80
80
60
40
-90
10
20
-100
0
0
20
40
60
80
0
-40 -20
100 120
0
20
40
60
80
0.5
100 120
1.0
1.5
2.0
TEMPERATURE (°C)
TEMPERATURE (°C)
RL = 2kΩ
135
3.5
4.0
4.5
0.1
MAX4400 toc14
3.0
MAX4400 toc13
140
3.0
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
MINIMUM OPERATING VOLTAGE
vs. TEMPERATURE
LARGE-SIGNAL GAIN
vs. TEMPERATURE
2.5
VOUT (V)
MAX4400 toc15
-40 -20
RL = 2kΩ
VOUT = 2Vp-p
AV = +1
2.5
130
120
THD (%)
VMIN (V)
GAIN (dB)
0.01
125
2.0
115
0.001
1.5
110
105
-40 -20
0
20
40
60
80
-40 -20
100 120
0
20
40
60
80
10
100 120
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. INPUT AMPLITUDE
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. INPUT AMPLITUDE
0.1
0.01
1k
FREQUENCY (Hz)
10k
100k
0.01
0.0001
0.0001
100
0.1
0.001
0.001
0.0001
RL = 100kΩ
f = 10kHz
BW = 20kHz
1
THD + N (%)
THD + N (%)
0.001
RL = 2kΩ
f = 10kHz
BW = 20kHz
1
10
MAX4400 toc17
MAX4400 toc16
10
MAX4400 toc18
TEMPERATURE (°C)
RL = 100kΩ
VOUT = 2Vp-p
AV = +1
10
100
TEMPERATURE (°C)
0.01
THD (%)
0.0001
1.0
100
0
0.5
1.0
1.5
VIN (Vp-p)
2.0
2.5
3.0
0
0.5
1.0
1.5
2.0
2.5
3.0
VIN (Vp-p)
_______________________________________________________________________________________
5
MAX4400–MAX4403
Typical Operating Characteristics (continued)
(VDD = +5V, VSS = 0, VCM = VDD/2, V SHDN = 5V, RL = ∞ connected to VDD/2, TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics (continued)
(VDD = +5V, VSS = 0, VCM = VDD/2, VSHDN = 5V, RL = ∞ connected to VDD/2, TA = +25°C, unless otherwise noted.)
MAX4400 toc19
2000
AV = +1
TA = +25°C
AV = +1V/V
RL = 2kΩ
MAX4400 toc20
NONINVERTING SMALL-SIGNAL
TRANSIENT RESPONSE
CAPACITIVE-LOAD STABILITY
1500
CAPACITIVE LOAD (pF)
IN
UNSTABLE
REGION
1000
50mV/div
STABLE
REGION
500
OUT
0
1k
10k
100k
2µs/div
RESISTIVE LOAD (Ω)
NONINVERTING LARGE-SIGNAL
TRANSIENT RESPONSE
MAX4400 toc21
30
NEGATIVE OVERSHOOT
25
OVERSHOOT (%)
IN
2V/div
MAX4400 toc22
PERCENT OVERSHOOT
vs. CAPACITIVE LOAD
AV = +1V/V
RL = 2kΩ
20
15
10
OUT
5
POSITIVE OVERSHOOT
0
10µs/div
0
100
200
300
400
500
CLOAD (pF)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4400 toc24
450
VOUT = VDD/2
400
SUPPLY CURRENT (µA)
MAX4400–MAX4403
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
350
300
250
200
150
100
50
0
0
1
2
3
4
5
6
SUPPLY VOLTAGE (V)
6
_______________________________________________________________________________________
600
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
PIN
NAME
FUNCTION
MAX4400
MAX4401
MAX4402
MAX4403
1
1
—
—
IN+
—
—
3
3
INA+
Noninverting Amplifier Input A
—
—
5
5
INB+
Noninverting Amplifier Input B
—
—
—
10
INC+
Noninverting Amplifier Input C
—
—
—
12
IND+
Noninverting Amplifier Input D
2
2
4
11
VSS
Negative Supply. Connect to ground for singlesupply operation
3
3
—
—
IN-
Inverting Amplifier Input
—
—
2
2
INA-
Inverting Amplifier Input A
—
—
6
6
INB-
Inverting Amplifier Input B
—
—
—
9
INC-
Inverting Amplifier Input C
—
—
—
13
IND-
Inverting Amplifier Input D
4
4
—
—
OUT
Amplifier Output
—
—
1
1
OUTA
Amplifier Output A
—
—
7
7
OUTB
Amplifier Output B
—
—
—
8
OUTC
Amplifier Output C
—
—
—
14
OUTD
Amplifier Output D
5
6
8
4
VDD
—
5
—
—
SHDN
Noninverting Amplifier Input
Positive Supply
Active-Low Shutdown Input. Connect to VDD for
normal operation. Do not leave floating.
Detailed Description
Rail-to-Rail Output Stage
The MAX4400–MAX4403 can drive a 2kΩ load and still
typically swing within 55mV of the supply rails. Figure 1
shows the output voltage swing of the MAX4400 configured with AV = +10V/V.
1V/div
Driving Capacitive Loads
Driving a capacitive load can cause instability in many
op amps, especially those with low quiescent current.
The MAX4400–MAX4403 are unity-gain stable for a
range of capacitive loads to above 400pF. Figure 2
shows the response of the MAX4400 with an excessive
capacitive load. Adding a series resistor between the
output and the load capacitor (Figure 3) improves the
100µs/div
Figure 1. Rail-to-Rail Output Operation
_______________________________________________________________________________________
7
MAX4400–MAX4403
Pin Description
MAX4400–MAX4403
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
IN
RISO
50mV/div
CL
MAX4400
MAX4401
MAX4402
MAX4403
OUT
2µs/div
Figure 2. Small-Signal Transient Response with Excessive
Capacitive Load
SHDN
Figure 3. Capacitive-Load-Driving Circuit
VDD
2V/div
2V/div
OUT
1V/div
OUT
RL = 10MΩ TO GND
CL = 25pF
10µs/div
400µs/div
Figure 5. Power-Up/Power-Down Waveform
Figure 4. Shutdown Waveform
circuit’s response by isolating the load capacitance
from the op amp’s output.
Applications Information
Shutdown Mode
The MAX4401 features a low-power shutdown mode.
When SHDN goes low, the supply current drops to
0.1µA (typical). The output enters a high-impedance
state. Pull SHDN high to enable the amplifier. Do not
leave SHDN floating. Figure 4 shows the shutdown
waveform.
Power Supplies and Layout
The MAX4400–MAX4403 operate from a single +2.5V
to +5.5V power supply. Bypass the power supply with a
0.1µF capacitor to ground.
Good layout techniques optimize performance by
decreasing the amount of stray capacitance at the op
amp’s inputs and outputs. To decrease stray capacitance, minimize trace lengths by placing external components close to the op amp’s pins.
Chip Information
Power-Up
The MAX4400–MAX4403 outputs typically settle within
5µs after power-up. Figure 5 shows the output voltage
on power-up and power-down.
8
TRANSISTOR COUNT: 101 (MAX4400/MAX4401)
202 (MAX4402)
404 (MAX4403)
_______________________________________________________________________________________
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
MAX4403
OUTA 1
14 OUTD
INA- 2
13 IND-
INA+ 3
12 IND+
MAX4402
OUTA 1
8 VDD
VDD 4
11 VSS
INA- 2
7 OUTB
INB+ 5
10 INC+
INA+ 3
6 INB-
INB- 6
9 INC-
VSS 4
5 INB+
OUTB 7
8 OUTC
SOT23-8/SO
TSSOP/SO
SC70, 5L.EPS
Package Information
_______________________________________________________________________________________
9
MAX4400–MAX4403
Pin Configurations (continued)
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
SC70, 6L.EPS
MAX4400–MAX4403
Package Information (continued)
10
______________________________________________________________________________________
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
SOT5L.EPS
______________________________________________________________________________________
11
MAX4400–MAX4403
Package Information (continued)
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
SOT23, 8L.EPS
MAX4400–MAX4403
Package Information (continued)
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.
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2000 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.