MAX396CWI+

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Introduction to MAX396CWI

The MAX396CWI is a Cascadable, 8:1, Analog Multiplexer/Demultiplexer from Maxim Integrated. It is an 8-channel analog switch/multiplexer/demultiplexer IC with standard CMOS logic input levels.

Applications of MAX396CWI+

The MAX396CWI+ is primarily intended for analog signal routing applications, including the control of parameters such as volume, gain, and balance in audio systems. It can also be used to multiplex or demultiplex digital data. In addition, the MAX396CWI+ makes an excellent choice for analog signal routing and multiplexing applications in test and measurement systems, discretes and related systems, remote sensing and monitoring equipment.

The MAX396CWI+ is designed to minimize power consumption, size and cost in applications such as:

• Cellular and PCS Telephones
• Portable Instruments
• Test Equipment
• Global Positioning System
• Digital Cameras
• Consumer Electronics
• Automotive Electronics

Working Principle of MAX396CWI+

The MAX396CWI+ is an analog multiplexer/demultiplexer designed to multiplex and demultiplex two VDDs, one VEE, one VREF, and seven reference inputs. It provides up to 8x signal routing capability with low off isolation. The device operates from a single 5V digital supply.

The MAX396CWI+ is a cascadeable device capable of providing up to 4x signal routing capability. The device can be cascaded with other identical switches to create a higher channel count. Each channel can be configured for either single-ended input or differential input/output. This flexibility allows the user to configure the switch for the desired application. The basic operation of the MAX396CWI+ is simple. The digital logic inputs select which of the eight input channels will be routed to the single output, or sometimes to both the + and – outputs.

At the heart of the device is an array of eight 1x8 analog switches. When addressed by an appropriate logic low at the control (EN) pin, these switches enable their corresponding inputs to be connected to their desired outputs. When a logic high is applied to the control (EN) pin, the switches are all disabled and no signal path is established.

The MAX396CWI+ also features an on-chip oscillator circuit and logic control circuitry. This circuitry allows the user to control the speed at which the switches open and close, and helps insure that the multiplexer does not introduce distortion to the signal being routed.

Conclusion

The MAX396CWI+ is a versatile 8:1 multiplexer/demultiplexer IC from Maxim Integrated Products. It is intended for analog signal routing applications, including audio systems, test and measurement systems, discretes and related systems, remote sensing and monitoring equipment, cellular and PCS telephones, portable instruments, digital cameras, and automotive electronics. The MAX396CWI+ utilizes an array of 8x1 analog switches which are controlled by an on-chip oscillator and logic control circuitry. This circuitry allows the user to control the speed at which the switches open and close, and helps insure that the multiplexer does not introduce distortion to the routed signal.

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