ADGS1408 Series

SPI Interface, 4 Ω RON, ±15 V/+12 V/±5 V, 1.8 V Logic Control, 8:1 Muxes

Catalog

SPI Interface, 4 Ω RON, ±15 V/+12 V/±5 V, 1.8 V Logic Control, 8:1 Muxes

Part	Current - Leakage (IS(off)) (Max) [Max]	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	On-State Resistance (Max) [Max]	Package / Case	Channel Capacitance (CS(off), CD(off)) [custom]	Channel Capacitance (CS(off), CD(off)) [custom]	-3db Bandwidth	Number of Circuits	Voltage - Supply, Single (V+)	Voltage - Supply, Dual (V±) [Max]	Voltage - Supply, Dual (V±) [Min]	Crosstalk	Switch Time (Ton, Toff) (Max) [custom]	Switch Time (Ton, Toff) (Max) [custom]	Charge Injection	Supplier Device Package	Channel-to-Channel Matching (ΔRon)	Multiplexer/Demultiplexer Circuit
Analog Devices ADGS1408BCPZ-RL7	200 pA	Surface Mount	125 °C	-40 °C	4.7 Ohm	24-VFQFN Exposed Pad CSP	80 pF	14 pF	60 MHz	1	12 V	15 V	-15 V	-70 dB	165 ns	155 ns	50 pC	24-LFCSP (4x4)	200 mOhm	8:1

Catalog

SPI Interface, 4 Ω RON, ±15 V/+12 V/±5 V, 1.8 V Logic Control, 8:1 Muxes

Key Features

• SPI interface with error detectionIncludes CRC, invalid read/write address, and SCLK count error detectionSupports burst mode and daisy-chain modeIndustry-standard SPI Mode 0 and SPI Mode 3 interface compatible

• Includes CRC, invalid read/write address, and SCLK count error detection

• Supports burst mode and daisy-chain mode

• Industry-standard SPI Mode 0 and SPI Mode 3 interface compatible

• Round robin mode allows switching times comparable with a parallel interface

• General-purpose digital outputs that can be used to control other devices such as Analog Devices’ parallel switches

• 4 Ω typical on resistance at 25°C

• 0.5 Ω typical on-resistance flatness at 25°C

• 0.2 Ω typical on-resistance match between channels at 25°C

• VSSto VDDanalog signal rangeFully specified at ±15 V, ±5 V, and +12 VPower-up sequence of VDD, VSS, and GND before applying VLand digital/analog inputs

• Fully specified at ±15 V, ±5 V, and +12 V

• Power-up sequence of VDD, VSS, and GND before applying VLand digital/analog inputs

• 1.8 V logic compatibility with 2.7 V ≤ VL≤ 3.3 V

• 24-lead LFCSP package

Description

The ADGS1408 /ADGS1409are analog multiplexers comprising eight single channels and four differential channels, respectively. A serial peripheral interface (SPI) controls the switches. The SPI interface has robust error detection features such as cyclic redundancy check (CRC) error detection, invalid read/write address detection, and SCLK count error detection.It is possible to daisy-chain multiple ADGS1408 / ADGS1409 devices together. Daisy-chain mode enables the configuration of multiple devices with a minimal amount of digital lines. The ADGS1408 / ADGS1409 can also operate in burst mode to decrease the time between SPI commands.iCMOS construction ensures ultra low power dissipation, making the devices ideally suited for portable and battery-powered instruments.Each switch conducts equally well in both directions when on, and each switch has an input signal range that extends to the supplies. In the off condition, signal levels up to the supplies are blocked.The on-resistance profile is flat over the full analog input range, which ensures linearity and low distortion when switching audio signals.PRODUCT HIGHLIGHTSSPI interface removes the need for parallel conversion, logic traces, and reduces GPIO channel count.Daisy-chain mode removes additional logic traces when multiple devices are used.CRC error detection, invalid read/write address detection, and SCLK count error detection ensure a robust digital interface.CRC and error detection capabilities allow the use of the ADGS1408/ADGS1409 in safety critical systems.Minimal distortion.APPLICATIONSAutomated test equipmentData acquisition systemsBattery-powered systemsSample-and-hold systemsAudio signal routingVideo signal routingCommunications systemsRelay replacement