FEATURES

Latch-up proof

3.5 pF off source capacitance

Off drain capacitance

ADG5206: 64 pF

0.35 pC typical charge injection

±0.02 nA on channel leakage

Low on resistance: 155 Ω typical

±9 V to ±22 V dual-supply operation

9 V to 40 V single-supply operation

VSS to VDD analog signal range

Human body model (HBM) ESD rating

ADG5206: 8 kV all pins

 

ANWENDUNGEN

Automatic test equipment

Datenerfassung

Instrumentierung

Avionics

Battery monitoring

Communication systems

 

ALLGEMEINE BESCHREIBUNG

The ADG5206 and ADG5207 are monolithic CMOS analog multiplexers comprising 16 single channels and 8 differential channels, respectively. The ADG5206 switches one of sixteen inputs to a common output, as determined by the 4-bit binary address lines, A0, A1, A2, and A3.

An EN input on both devices enables or disables the device. When EN is low, the device is disabled and all channels switch off. The ultralow capacitance and charge injection of these switches make them ideal solutions for data acquisition and sample-and-hold applications, where low glitch and fast settling are required. Fast switching speed coupled with high signal bandwidth make these devices suitable for video signal switching.

Each switch conducts equally well in both directions when on, and each switch has an input signal range that extends to the power supplies. In the off condition, signal levels up to the supplies are blocked.

The ADG5206/ADG5207 do not have VL pins; instead, an on-chip voltage generator generates the logic power supply internally.

PRODUKT-HIGHLIGHTS

  1. Trench Isolation Guards Against Latch-Up. A dielectric trenchseparates the P and N channel transistors to prevent latch-up even under severe overvoltage conditions.
  2. Optimal switch design for low charge injection, low switch capacitance, and low leakage currents.
  3. The ADG5206 achieves 8 kV HBM ESD specification on all external pins, while the ADG5207 achieves 8 kV on the I/O port to supply pins, 2 kV on the I/O port to I/O port pins, and 8 kV on all other pins.
  4. Dual-Supply Operation. For applications where the analogsignal is bipolar, the ADG5206/ADG5207 can be operated from dual supplies of up to ±22 V.
  5. Single-Supply Operation. For applications where theanalog signal is unipolar, the ADG5206/ADG5207 can be operated from a single rail power supply of up to 40 V.

 

ABSOLUTE HÖCHSTWERTE

TA = 25°C, unless otherwise noted.

Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Only one absolute maximum rating can be applied at any one time.

 

ANWENDUNGSINFORMATIONEN

The ADG52xx family of switches and multiplexers provides a robust solution for instrumentation, industrial, automotive, aerospace, and other harsh environments that are prone to latch-up, which is an undesirable high current state that can lead to device failure and persist until the power supply is turned off. The ADG5206/ADG5207 high voltage switches allow singlesupply operation from 9 V to 40 V and dual-supply operation from ±9 V to ±22 V.

 

TRENCH ISOLATION

In the ADG5206/ADG5207, an insulating oxide layer (trench) is placed between the NMOS and the PMOS transistors of each CMOS switch. Parasitic junctions, which occur between the transistors in junction isolated switches, are eliminated, and the result is a completely latch-up proof switch.

In junction isolation, the N and P wells of the PMOS and NMOS transistors form a diode that is reverse-biased under normal operation. However, during overvoltage conditions, this diode can become forward-biased. A silicon controlled rectifier (SCR) type circuit is formed by the two transistors, causing a significant amplification of the current that, in turn, leads to latch-up. With trench isolation, this diode is removed and the result is a latchup proof switch.