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MAX44281
EVALUATION KIT AVAILABLE
Ultra-Small, Ultra-Thin, 4-Bump Op Amp
General Description
The MAX44281 is the industry’s first op amp in a 4-bump WLP package, designed for use in portable consumer and medical applications. This device is offered as a noninverting amplifier with gain (AV) of +1V/V, +2V/V, or +10V/V.
The device features rail-to-rail output, low 100µV input voltage offset, and 15MHz of bandwidth with only 700µA of supply current.
The device features shutdown functionality by pulling VDD to ground. During shutdown, both the input and the output are high impedance.
The device is available in an ultra-small, 0.85mm x 0.85mm, 4-bump WLP package with 0.5mm height. It is specified over the -40°C to +125°C temperature range.
Applications
●● 3G/4G Handsets ●● Sensor Interfaces ●● Portable Medical Devices ●● Battery-Powered Devices ●● General-Purpose Signal Processing ●● Notebooks ●● Transimpedance Amplifiers
Benefits and Features
●● 4-Pin Amplifier Saves Board Space • 0.85mm x 0.85mm 4-Bump Thin WLP Package • Three Gain Versions Available -- 1V/V (MAX44281O) -- 2V/V (MAX44281V) -- 10V/V (MAX44281U)
●● Precision Specifications Support Most Precision Applications • Low 100μV Input Offset Voltage • Rail-to-Rail Output • 10pA Input Bias Current • 15MHz GBW
●● Low Power Consumption Extends Battery Life in Portable Applications • 700μA Supply Current • Shutdown Input Through VDD • 1.8V to 5.5V Supply Range
Ordering Information appears at end of data sheet.
Functional Diagrams
VDD
IN MAX44281O OUT
IN
VDD MAX44281V OUT
IN
VDD MAX44281U OUT
R 9R
R GND
R
GND GND
19-6541; Rev 4; 2/20
MAX44281
Ultra-Small, Ultra-Thin, 4-Bump Op Amp
Absolute Maximum Ratings
VDD to GND..............................................................-0.3V to +6V IN to GND.................................................................-0.3V to +6V
OUT to GND.................................(VGND - 0.3V) to (VDD + 0.3V) Continuous Power Dissipation (TA = +70NC)
WLP (derate 9.7mW/NC above +70NC).........................303mW
Maximum Continuous Current into Any Pin....................P 20mA Operating Temperature Range......................... -40NC to +125NC Storage Temperature Range............................. -65NC to +150NC Soldering Temperature (reflow).......................................+260NC
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.
Package Thermal Characteristics (Note 1)
WLP Junction-to-Ambient Thermal Resistance (θJA).........103°C/W
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
Electrical Characteristics
(VDD = 3.3V, VGND = 0V, RL = 10kΩ to VDD/2, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER DC PERFORMANCE (Note 1)
SYMBOL
CONDITIONS
AV = 1V/V (MAX44281O)
Input Voltage Range (Note 3)
VIN AV = 2V/V (MAX44281V)
AV = 10V/V (MAX44281U)
Gain Error
Input Offset Voltage (Note 2) Input Offset Voltage Drift (Note 2) Input Bias Current (Note 2) Output Short-Circuit Current Output Voltage Low
GE
VOS VOS - TC
IB ISC VOL
AV = 1V/V (MAX44281O)
AV = 2V/V (MAX44281V)
AV = 10V/V (MAX44281U)
VIN = 150mV, no load
AV = 1 AV = 2V/V AV = 10V/V
TA = +25NC (Note 2) TA = -40NC to +125NC OUT to VDD or GND ROUT = 10kI ROUT = 600I
MIN
0.1 0.05 0.01
TYP
MAX UNITS
0.01 0.2 0.3 20 20 20 2 1
50
VDD 0.1
(VDD 0.1)/2 (VDD 0.1)/10 0.02
0.6 0.7 100 100 100 9 10 2000
0.02 0.1
V
%
FV FV/NC
pA mA V
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MAX44281
Ultra-Small, Ultra-Thin, 4-Bump Op Amp
Electrical Characteristics (continued)
(VDD = 3.3V, VGND = 0V, RL = 10kΩ to VDD/2, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
Output Voltage High
VOH
ROUT = 10kI ROUT = 600I
VDD – 0.1
VDD – 0.1
V
Input Voltage-Noise Density Gain Bandwidth
en GBW
AV = 1V/V, f = 10kHz AV = 2V/V, f = 10kHz AV = 10V/V, f = 10kHz
15 19 nV/√Hz 16 15 MHz
Slew Rate
SR
Capacitive Load
CLOAD
POWER-SUPPLY CHARACTERISTICS
No sustained oscillations
8 V/Fs 100 pF
Power-Supply Range Power-Supply Rejection Ratio
VDD
Guaranteed by TA = -40NC to +125NC
PSRR
TA = 0NC to +70NC
1.8 1.7
5.5 V
5.5
PSRR
75 100
dB
Supply Current
ICC VOUT = VDD/2, no load
700 1200 FA
Shutdown Supply Current
ISHDN
1.