MAX9945AUA+ Maxim Integrated Products, MAX9945AUA+ Datasheet - Page 9

• Manufacturer Part Number: MAX9945AUA+
• Description: IC OPAMP MOS-INPUT LP/LN 8-MSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX9945AUA+

• Amplifier Type: General Purpose
• Number Of Circuits: 1
• Output Type: Rail-to-Rail
• Slew Rate: 2.2 V/µs
• Gain Bandwidth Product: 3MHz
• Current - Input Bias: 0.05pA
• Voltage - Input Offset: 600µV
• Current - Supply: 400µA
• Current - Output / Channel: 25mA
• Voltage - Supply, Single/dual (±): 4.75 V ~ 38 V, ±2.4 V ~ 19 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Input Offset Voltage: +/- 0.6 V
• Input Bias Current (max): 50 fA
• Common Mode Rejection Ratio (min): 94 dB
• Supply Current: 850 uA
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Input Voltage: - 0.3 V to + 40 V
• Maximum Power Dissipation: 387.8 mW
• Mounting Style: SMD/SMT
• Operating Temperature Range: - 40 C to + 125 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

38V, Low-Noise, MOS-Input,
Low-Power Op Amp
Input Differential Voltage Protection
Chip Information
During normal op-amp operation, the inverting and non-
PROCESS: BiCMOS
inverting inputs of the MAX9945 are at approximately
the same voltage. The ±12V absolute maximum input
differential voltage rating offers sufficient protection for
most applications. If there is a possibility of exceeding
the input differential voltage specification, in the pres-
ence of extremely fast input voltage transients or due to
certain application-specific fault conditions, use exter-
nal low-leakage pico-amp diodes and series resistors
to protect the input stage of the amplifier (see Figure 2).
The extremely low input bias current of the MAX9945
allows a wide range of input series resistors to be used.
If low input voltage noise is critical to the application,
size the input series resistors appropriately.
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