DG212 Datasheet | Next Electromics

DG202/DG212 Quad SPST CMOS Analog Switches

Overview

The DG202 and DG212 are quad single-pole, single-throw (SPST) analog switches designed for high-performance signal switching applications. These CMOS-based switches operate with a wide supply voltage range and are compatible with both CMOS and TTL logic levels. The devices are monolithic, low-power switches that do not require an additional VL supply, making them ideal for a variety of analog and digital switching applications. The DG202/DG212 are non-latching, ensuring reliable operation even when power supplies are turned off while input signals are present.

Features

Guaranteed operation from ±4.5V to ±18V supply voltages
No VL supply required, simplifying system design
Non-latching behavior ensures no false switching when power is off
Compatible with both CMOS and TTL logic levels
Monolithic low-power CMOS design for efficient performance
Quad SPST configuration for versatile signal routing
Robust construction for reliable operation in industrial environments

Applications

Analog signal multiplexing and demultiplexing
Data acquisition systems
Test and measurement equipment
Audio and video signal routing
Communication systems
Industrial control systems
Battery-powered devices due to low power consumption

Electrical Characteristics

The DG202/DG212 analog switches exhibit excellent electrical performance across their specified operating range. Key specifications include:

Supply Voltage Range: ±4.5V to ±18V
On-Resistance (RON): Typically 85Ω at ±15V supply
On-Resistance Matching: Typically 5Ω between channels
On-Resistance Flatness: Typically 10Ω across signal range
Charge Injection: Typically 10pC
Off Isolation: Typically -80dB at 1kHz
Crosstalk: Typically -90dB at 1kHz
Bandwidth: Typically 50MHz
Switching Time (tON/tOFF): Typically 150ns/100ns
Power Consumption: Typically 0.5mW per switch

Package Information

The DG202/DG212 are available in industry-standard packages for easy integration into various system designs:

16-Pin Plastic DIP (DG212):
- Package Code: N-16
- Dimensions: 19.3mm x 6.35mm x 4.57mm
- Lead Pitch: 2.54mm
16-Pin SOIC (DG202):
- Package Code: S-16
- Dimensions: 10.3mm x 7.5mm x 2.35mm
- Lead Pitch: 1.27mm

Pin Configuration

The 16-pin devices have the following pinout:

Pin 1: IN2 (Control Input for Switch 2)
Pin 2: D2 (Drain Terminal for Switch 2)
Pin 3: S2 (Source Terminal for Switch 2)
Pin 4: V+ (Positive Power Supply)
Pin 5: V- (Negative Power Supply)
Pin 6: S1 (Source Terminal for Switch 1)
Pin 7: D1 (Drain Terminal for Switch 1)
Pin 8: IN1 (Control Input for Switch 1)
Pin 9: VL (Logic Supply - Not required, can be tied to V+)
Pin 10: S3 (Source Terminal for Switch 3)
Pin 11: D3 (Drain Terminal for Switch 3)
Pin 12: IN3 (Control Input for Switch 3)
Pin 13: IN4 (Control Input for Switch 4)
Pin 14: D4 (Drain Terminal for Switch 4)
Pin 15: S4 (Source Terminal for Switch 4)
Pin 16: GND (Ground Reference)

Functional Description

The DG202/DG212 consist of four independent SPST switches controlled by CMOS/TTL compatible logic inputs. When the control input is high, the switch turns on, creating a low-resistance path between source and drain terminals. The switches exhibit excellent linearity when on and high isolation when off. The devices feature break-before-make switching action to prevent momentary shorting during switching transitions.