Features and Benefits
- 3-Wire SPI Compatible Serial Interface
- 1.8 V to 5.5 V Single Supply
- ±2.5 V Dual-Supply Operation
- 4 Ω On Resistance
- 0.5 Ω On Resistance Flatness
- 7 mm x 7 mm 48-Lead Chip Scale Package (LFCSP) or 48-Lead TQFP Package
- Rail-to-Rail Operation
- Power-On Reset
- See data sheet for additional features
The ADG731/ADG725 are monolithic, CMOS, 32-channel/dual 16-channel analog multiplexers with a serially controlled 3-wire interface. The ADG731 switches one of 32 inputs (S1–S32) to a common output, D. The ADG725 can be configured as a dual mux switching one of 16 inputs to one output, or a differential mux switching one of 16 inputs to a differential output.
These mulitplexers utilize a 3-wire serial interface that is compatible with SPI®, QSPI™, MICROWIRE™, and some DSP interface standards. On power-up, the Internal Shift Register contains all zeros and all switches are in the OFF state.
These multiplexers are designed on an enhanced submicron process that provides low power dissipation yet gives high switching speed with very low on resistance and leakage currents. They operate from a single supply of 1.8 V to 5.5 V or a ±2.5 V dual supply, making them ideally suited to a variety of applications. On resistance is in the region of a few ohms, is closely matched between switches, and is very flat over the full signal range.
These parts can operate equally well as either multiplexers or demultiplexers and have an input signal range that extends to the supplies. In the OFF condition, signal levels up to the supplies are blocked. All channels exhibit break-before-make switching action, preventing momentary shorting when switching channels.
The ADG731 and ADG725 are serially controlled 32-channel, and dual/differential 16-channel multiplexers, respectively. They are available in either a 48-lead LFCSP or TQFP package.
- 3-Wire Serial Interface.
- 1.8 V to 5.5 V Single-Supply or ±2.5 V Dual-Supply
Operation. These parts are specified and guaranteed with 5 V ± 10%, 3 V ± 10% single-supply, and ± 2.5 V ±10% dual-supply rails.
- On Resistance of 4 W.
- Guaranteed Break-Before-Make Switching Action.
- 7 mm ×7 mm 48-Lead Chip Scale Package (LFCSP) or
- 48-Lead TQFP Package.
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Product Selection Guide (1)
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.