AD75019JP

Overview

The AD75019JP is a 16 × 16 crosspoint switch array containing 256 analog switches in a compact 44-lead PLCC package. It supports wide signal ranges up to supply rails of ±12 V or 24 V, with a typical on-resistance of 150 Ω at ±12 V supplies. The device features TTL/CMOS/microprocessor-compatible control lines and utilizes a serial input interface for simplified data loading into an onboard 256-bit shift register. A serial output allows cascading multiple units to expand channel counts. Quiescent power consumption is low at 2 mW, and the static switch control latches retain settings as long as power is applied.

Feature Summary

• Contains 256 analog switches arranged in a 16 × 16 matrix allowing any X pin to connect to any Y pin
• Serial input interface simplifies control line connections while serial output enables cascading for additional channels
• Compatible with TTL, CMOS, and microprocessor logic levels for digital control inputs
• Low quiescent power consumption suitable for energy-efficient applications

Applications

• Signal routing in test and measurement equipment
• Data acquisition systems requiring multi-channel switching
• Communication systems needing flexible signal path configuration

Procurement Notes

Verify the ordering suffix Z indicates RoHS compliance when sourcing the AD75019JPZ variant. Confirm the package type matches the required 44-lead Plastic Leaded Chip Carrier (P-44) footprint. Ensure power supply sequencing adheres to BiMOS II isolation requirements to prevent parasitic diode conduction between analog and digital domains.

Selection Notes

Select this component for applications requiring a high-density analog switch matrix with minimal control wiring. The serial interface reduces pin count overhead compared to parallel control schemes. Verify that the operating temperature range of 0°C to 70°C meets system environmental constraints. Consider cascading capabilities if more than 256 switches are needed within the design architecture.

Part Context

The AD75019 is fabricated using Analog Devices’ BiMOS II process, combining CMOS devices for low-distortion switching with bipolar devices for ESD protection. This technology enables robust performance across wide voltage ranges while maintaining low leakage currents. The device serves as a core building block for complex signal routing networks where reliability and signal integrity are critical.

Replacement Considerations

No direct public substitute part numbers are documented for the AD75019JP in the provided datasheet. Evaluate alternative crosspoint switch arrays from other manufacturers only if pin compatibility and electrical specifications align precisely with the original design requirements.

FAQ

What is the minimum clock rate required for the serial shift register?

The serial shift register is dynamic and requires a minimum clock rate of 20 kHz to maintain data integrity.

How is data transferred from the shift register to the switch control latches?

Data is transferred by pulsing the Parallel Clock (PCLK) input low after the 256-bit shift register is filled. This must occur within 5 ms of filling the register.

Can multiple AD75019 devices be used together?

Yes, multiple devices can be cascaded by connecting the Serial Output (SOUT) of one device to the Serial Input (SIN) of the next.