MAXIM MAX4289 Technical data
General Description
The MAX4289 micropower, operational amplifier is optimized for ultra-low supply voltage operation. The amplifier consumes only 9µA of quiescent supply current and
is fully specified for operation from a single 1.0V to 5.5V
power supply. This ultra-low voltage operation together
with the low quiescent current consumption make the
MAX4289 ideal for use in battery-powered systems
operated from as little as a single alkaline cell. The
MAX4289 also features a wide input common-mode
range that includes the ground, and an output voltage
swing that is virtually Rail-to-Rail®, allowing almost all of
the power supply to be used for signal voltage.
The low input offset voltage and low input bias current
specifications along with the high open-loop gain make
the MAX4289 well-suited to applications requiring a
high degree of precision.
The MAX4289 is available in a tiny 6-pin SOT23 package. All specifications are guaranteed over the extended temperature range of -40°C to +85°C.
Applications
Features
♦ Ultra-Low Voltage Operation: Guaranteed
Specifications from 1.0V to 5.5V
♦ Input Common-Mode Range: 0 to (VCC- 0.2V)
♦ Ultra-Low Power Consumption: 9µA Supply
Current (typ)
♦ Optimized for Operation from Single-Cell
Battery-Powered Systems
♦ Compatible with 3.0V and 5.0V Single-Supply
Systems
♦ Low Offset Voltage: 0.2mV
♦ Low Input Bias Current: 5nA
♦ High Open-Loop Voltage Gain: 90dB
♦ Rail-to-Rail Output Stage Drives 5kΩ Load
♦ No Output Phase Reversal for Overdriven Inputs
♦ Available in a Tiny 6-Pin SOT23 (3mm
✕
3mm)
MAX4289
1.0V Micropower, SOT23, Operational Amplifier
________________________________________________________________ Maxim Integrated Products 1
Pin Configurations
Typical Operating Characteristic
Ordering Information
19-2023; Rev 0; 1/02
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.
Single-Cell Systems
Portable Electronic
Equipment
Battery-Powered
Instrumentation
Hearing Aids Using Zinc
Air Battery
Strain Gauges
Cellular Phones
Notebook Computers
Sensor Amplifiers
Portable Communication
Devices
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
PART TEMP RANGE
MAX4289EUT-T -40°C to +85°C 6 SOT23-6 AARX
MAX4289ESA -40°C to +85°C 8 SO —
PINPACKAGE
TOP
MARK
POWER-SUPPLY REJECTION RATIO
90
80
70
PSRR (dB)
60
50
0.8 1.1 1.20.9 1.0 1.3 1.4 1.5
vs. SUPPLY VOLTAGE
TA = +85°C
TA = -40°C
TA = +25°C
SUPPLY VOLTAGE (V)
TOP VIEW
16V
OUT
MAX4289
2
GND
34
SOT23-6
1
N.C.
CC
2
IN-
N.C.
5
IN+
IN-IN+
MAX4289
3
4
SO-8
87N.C.
V
OUT
6
N.C.GND
5
CC
MAX4289
1.0V Micropower, SOT23, Operational Amplifier
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VCC= 3V, VCM= 0, V
OUT
= VCC/2, RLtied to VCC/2, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA = +25°C.)
(Note 1)
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.
Power-Supply Voltage (VCCto GND).......................................6V
Input Voltage (IN+ or IN-)...........................(V
CC
+ 0.3V) to -0.3V
Input Current (IN+ or IN-)....................................................20mA
Output Short-Circuit Duration to V
CC
or GND............Continuous
Continuous Power Dissipation (T
A
= +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C).............696mW
8-Pin SO (derate 5.88mW/°C above +70°C).................471mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range V
Quiescent Supply Current I
Input Offset Voltage V
Input Bias Current I
Input Offset Current I
Differential Input Resistance R
Input Common-Mode Voltage
Range
Power-Supply Rejection Ratio PSRR
Large-Signal Voltage Gain A
Output Voltage Swing High V
Output Voltage Swing Low V
CC
Inferred from the
PSRR tests
V
CC
V
V
OS
OS
V
CM
TA = +25°C ±0.2 ±2.0
TA = T
B
IN
Inferred from
CMRR test
VCC = 1.2V, 0 ≤ VCC - 0.2V 57
VCC = 1.2V, 0 ≤ VCM ≤ VCC - 0.8V 57 85Common-Mode Rejection Ratio CMRR
V
1.0V ≤ VCC ≤ 5.5V, T
1.2V ≤ V
VOL
OH
OL
R
R
Specified as
|V
Specified as V
= 1.0V, T
CC
= 3.0V 12 25
CC
= 5.5V 18 40
CC
to T
MIN
= 3.0V, 0 ≤ VCM ≤ VCC - 0.8V 57 110
CC
≤ 5.5V, T
CC
= 100kΩ (50mV ≤ V
L
= 5kΩ (100mV ≤ V
L
- VOH|
CC
T
= +25°C 1.0 5.5
A
T
= -40°C to +85°C 1.2 5.5
A
= +25°C914
A
MAX
±6.0
±5 ±15 nA
±0.5 ±2.0 nA
50 MΩ
VCC = 1.2V 0 VCC - 0.2
= 3.0V 0 VCC - 0.8
V
CC
= +25°C5475
A
= -40°C to +85°C5875
A
≤ V
OUT
OUT
≤ V
- 50mV) 110
CC
- 100mV) 80 90
CC
RL = 100kΩ 0.2 10
R
= 5kΩ 740
L
OL
RL = 100kΩ 0.4 10
RL = 5kΩ 740
V
µA
mV
V
dB
dB
dB
mV
mV
MAX4289
1.0V Micropower, SOT23, Operational Amplifier
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(VCC= 3V, VCM= 0, V
OUT
= VCC/2, RLtied to VCC/2, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA = +25°C.)
(Note 1)
Note 1: All specifications are 100% production tested at TA= +25°C. Temperature specification limits are guaranteed by design.
Typical Operating Characteristics
(VCC= 3V, VCM= 0, RLto VCC/2, TA= +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. TEMPERATURE
MAX4289 toc01
0
2
6
4
12
14
10
8
16
SUPPLY CURRENT (µA)
-40 0 20-20
40
60 80 100
TEMPERATURE (°C)
VCC = 3V
VCC = 1V
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
0 1.00.5 1.5 2.0 2.5 3.0
INPUT OFFSET VOLTAGE
vs. INPUT COMMON-MODE VOLTAGE
MAX4289 toc02
INPUT COMMON-MODE VOLTAGE (V)
INPUT OFFSET VOLTAGE (mV)
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX4289 toc03
-0.8
-0.6
-0.2
-0.4
0.4
0.6
0.2
0
0.8
INPUT OFFSET VOLTAGE (mV)
-40 0 20-20
40
60 80 100
TEMPERATURE (°C)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Short-Circuit Current I
Power-Up Time t
Input Capacitance C
Gain-Bandwidth Product GBW 17 kHz
Phase Margin θM80d egr ees
Gain Margin GM 10 dB
Slew Rate SR 6 V/ms
Capacitive-Load Stability A
Settling Time to 0.1% t
IN
S
Sourcing/sinking
current
A
OUT
PU
VCC = 1.0V 0.6
= 3.0V 19
V
CC
300 µs
3.0 pF
= +1V/V, no sustained oscillations 200 pF
VCL
= +1V/V, no sustained oscillations 75 µs
VCL
mA
Loading...