Features
- ON Resistance (Max) 85Ω
- Low Power Consumption (PD) <35µW
- Fast Switching Action
- tON (Max) 250ns
- tOFF (Max, DG444) 140ns
- Low Charge Injection
- Upgrade from DG211, DG212
- TTL, CMOS Compatible
- Single or Split Supply Operation
- Pb-Free Plus Anneal Available (RoHS Compliant)
DG444_DG445 Functional Diagram
Description
The DG444 and DG445 monolithic CMOS analog switches are drop-in replacements for the popular DG211 and DG212 series devices. They include four independent single pole single throw (SPST) analog switches and TTL and CMOS compatible digital inputs. These switches feature lower analog ON resistance (85Ω) and faster switch time (tON 250ns) compared to the DG211 and DG212. Charge injection has been reduced, simplifying sample and hold applications. The improvements in the DG444 series are made possible by using a high voltage silicon-gate process. An epitaxial layer prevents the latch-up associated with older CMOS technologies. The 44V maximum voltage range permits controlling ±20V signals when operating with ±20V power supplies. The four switches are bilateral, equally matched for AC or bidirectional signals. The ON resistance variation with analog signals is quite low over a ±5V analog input range. The switches in the DG444 and DG445 are identical, differing only in the polarity of the selection logic.
Parameters
| Attributes | Value |
|---|---|
| Switch or MUX | Switch |
| Channels (#) | 4 |
| Configuration | SPST |
| TON (ns) | 120 |
| TOFF (ns) | 110 |
| Charge Injection (pC) | 1 |
| Drain Capacitance (pF) | 16 |
| Leakage (nA) | 0.08 |
| RDS (ON) (Ohms) | 50 |
| Source Cap (pf) | 4 |
| Vcc (V) | 5 to 34, ±5 to ±20 |
| VCC (Single) (V) | 5 - 34 |
| IS (mA) | 1.0E-6 |
| Type of Switch | SPST |
| Qualification Level | Standard |
Applications
- Audio Switching
- Battery Operated Systems
- Data Acquisition
- Hi-Rel Systems
- Sample and Hold Circuits
- Communication Systems
- Automatic Test Equipment
| Part Number | Status | Samples | Stock | RoHS | Package | Budgetary Price (USD) | Lead Count (#) | Carrier Type | Moisture Sensitivity Level (MSL) | Pitch (mm) | Pkg. Dimensions (mm) | Pb (Lead) Free | Pb Free Category | Temp. Range (°C) | Country of Assembly | Country of Wafer Fabrication |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DG444DVZ | Active | Available | In Stock | RoHS:EN | TSSOP | 1ku | $2.14 | 16# | Tube | 1 | 0.7mm | 5.0 x 4.4 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +85°C | CHINA, MALAYSIA | USA |
| DG444DVZ-T | Active | N/A | Out of Stock | RoHS:EN | TSSOP | 1ku | $2.14 | 16# | Reel | 1 | 0.7mm | 5.0 x 4.4 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +85°C | CHINA, MALAYSIA | USA |
| DG444DYZ | Active | Available | In Stock | Contact | SOIC | 1ku | $2.03 | 16# | Tube | 3 | 1.3mm | 9.9 x 3.9 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +85°C | PHILIPPINES, MALAYSIA | USA |
| DG444DYZ-T | Active | N/A | In Stock | Contact | SOIC | 1ku | $2.03 | 16# | Reel | 3 | 1.3mm | 9.9 x 3.9 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +85°C | PHILIPPINES, MALAYSIA | USA |
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- Product Change NoticePDF 152 KB PCN12085 Nov 07, 2012
- Product Change NoticePDF 121 KB PCN11113A Aug 13, 2012
- Product Change NoticePDF 136 KB PCN12004 Jan 13, 2012
- Product Change NoticePDF 120 KB PCN11113 Oct 31, 2011
- Application NotePDF 843 KB an535 Jun 05, 2002AI-generated Summary: A Data Acquisition System (DAS) requires careful design of signal conditioning, transducer selection, and signal transmission to ensure high accuracy. Signal conditioning includes multiplexing, amplification, filtering, and calibration, ideally performed near the transducer. Transducers convert physical variables to electrical signals, often voltage, with low source resistance preferred. Signal paths can be single-ended or differential; differential paths better reject common mode noise, especially for low-level signals. Shielded twisted pairs and balanced lines reduce interference. Filters, typically Butterworth low-pass, prevent aliasing and maintain signal integrity.
- Application NotePDF 468 KB an557 May 24, 2002AI-generated Summary: The document details recommended test procedures for analog switches, focusing on key parameters such as crosstalk, break-before-make delay, and settling time. It explains how to measure crosstalk using decibel ratios and outlines the importance of break-before-make delay to prevent simultaneous switch closure. Settling time is measured to ensure output stability after input changes. It also covers input thresholds, leakage currents, power dissipation, and various switch capacitances, providing test circuit examples and conditions for accurate measurement.
- Application NotePDF 300 KB an1034 Nov 20, 1998AI-generated Summary: The document discusses the use of analog switches and multiplexers in wideband applications, highlighting the HI-524 monolithic wideband CMOS multiplexer and the HA-2541 amplifier. It emphasizes the importance of unity gain stability, fast settling time, and output swing for driving coaxial cables. The HI-524 includes feedback resistance to minimize offset voltage. Proper layout is crucial to avoid feedthrough and excessive capacitance. The document also outlines Renesas Electronics' disclaimers on product use, quality grades, safety responsibilities, environmental compliance, and legal restrictions.
- Application NotePDF 270 KB an520 Nov 20, 1998AI-generated Summary: Adding a pull-up resistor from CMOS inputs to +5V is essential when interfacing TTL outputs with CMOS inputs to improve interchangeability, noise immunity, compatibility, and reliability. A 2kΩ resistor is generally sufficient. CMOS inputs are compatible with CMOS logic at 5V to 15V without pull-ups. Mechanical switches require pull-up or pull-down resistors to prevent noise and contact issues. Renesas disclaims liability for misuse and emphasizes adherence to product specifications and legal regulations.
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- Application NotePDF 843 KB an535 Jun 05, 2002AI-generated Summary: A Data Acquisition System (DAS) requires careful design of signal conditioning, transducer selection, and signal transmission to ensure high accuracy. Signal conditioning includes multiplexing, amplification, filtering, and calibration, ideally performed near the transducer. Transducers convert physical variables to electrical signals, often voltage, with low source resistance preferred. Signal paths can be single-ended or differential; differential paths better reject common mode noise, especially for low-level signals. Shielded twisted pairs and balanced lines reduce interference. Filters, typically Butterworth low-pass, prevent aliasing and maintain signal integrity.
- Application NotePDF 468 KB an557 May 24, 2002AI-generated Summary: The document details recommended test procedures for analog switches, focusing on key parameters such as crosstalk, break-before-make delay, and settling time. It explains how to measure crosstalk using decibel ratios and outlines the importance of break-before-make delay to prevent simultaneous switch closure. Settling time is measured to ensure output stability after input changes. It also covers input thresholds, leakage currents, power dissipation, and various switch capacitances, providing test circuit examples and conditions for accurate measurement.
- Application NotePDF 300 KB an1034 Nov 20, 1998AI-generated Summary: The document discusses the use of analog switches and multiplexers in wideband applications, highlighting the HI-524 monolithic wideband CMOS multiplexer and the HA-2541 amplifier. It emphasizes the importance of unity gain stability, fast settling time, and output swing for driving coaxial cables. The HI-524 includes feedback resistance to minimize offset voltage. Proper layout is crucial to avoid feedthrough and excessive capacitance. The document also outlines Renesas Electronics' disclaimers on product use, quality grades, safety responsibilities, environmental compliance, and legal restrictions.
- Application NotePDF 270 KB an520 Nov 20, 1998AI-generated Summary: Adding a pull-up resistor from CMOS inputs to +5V is essential when interfacing TTL outputs with CMOS inputs to improve interchangeability, noise immunity, compatibility, and reliability. A 2kΩ resistor is generally sufficient. CMOS inputs are compatible with CMOS logic at 5V to 15V without pull-ups. Mechanical switches require pull-up or pull-down resistors to prevent noise and contact issues. Renesas disclaims liability for misuse and emphasizes adherence to product specifications and legal regulations.
Application Notes & White Papers (4)
- Product Change NoticePDF 152 KB PCN12085 Nov 07, 2012
- Product Change NoticePDF 121 KB PCN11113A Aug 13, 2012
- Product Change NoticePDF 136 KB PCN12004 Jan 13, 2012View More (6)
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