MAX44264 查看數據表（PDF） - Maxim Integrated
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MAX44264 Datasheet PDF : 10 Pages
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MAX44264
nanoPower Op Amp in
a Tiny 6-Bump WLP
Pin Configuration
TOP VIEW
MAX44264
+
IN+
A1
A2
VSS
IN-
B1
B2
VDD
OUT
C1
C2
N.C.
WLP BUMP
SIDE DOWN
Pin Description
PIN
NAME
A1
IN+
A2
VSS
B1
IN-
B2
VDD
C1
OUT
C2
N.C.
FUNCTION
Noninverting Amplifier Input
Negative Power-Supply Voltage
Inverting Amplifier Input
Positive Power-Supply Voltage
Amplifier Output
No Connection. Not internally connected.
Applications Information
Ground Sensing
The common-mode input range of the MAX44264 extends
down to ground, and offers excellent common-mode
rejection. These devices are guaranteed not to undergo
phase reversal when the input is overdriven.
Power Supplies and Layout
The IC operates from a single +1.8V to +5.5V power sup-
ply. Bypass power supplies with a 0.1μF ceramic capaci-
tor placed close to the VDD pin.
Ground layout improves performance by decreasing the
amount of stray capacitance and noise at the op amp’s
inputs and outputs. To decrease stray capacitance, mini-
mize PCB lengths and resistor leads, and place external
components close to the op amps’ pins.
Bandwidth
The IC is internally compensated for unity-gain stability
and has a typical gain-bandwidth of 9kHz.
Stability
The IC maintains stability in their minimum gain configura-
tion while driving capacitive loads. Although this product
family is primarily designed for low-frequency applications,
good layout is extremely important because low-power
requirements demand high-impedance circuits. The layout
should also minimize stray capacitance at the amplifier
inputs. However some stray capacitance may be unavoid-
able, and it may be necessary to add a 2pF to 10pF capac-
itor across the feedback resistor as shown in Figure 1.
Select the smallest capacitor value that ensures stability.
VCC
VIN
MAX44264
VSS R1
R2
2pF TO 10pF
Figure 1. Compensation for Feedback Node Capacitance
Chip Information
PROCESS: BiCMOS
www.maximintegrated.com
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