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Vishay Siliconix DG442LDQ-E3
- Part No.:
- DG442LDQ-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
DG442LDQ-E3.pdf
- Description:
- IC SW SPST-NOX4 30OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,289
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Product details
Overview
DG442LDQ-E3 from Vishay Siliconix is a precision monolithic quad SPST low-voltage CMOS analog switch with break-before-make switching action, 20 ns turn-on time, 12 ns turn-off time, and 17 Ω on-resistance - designed for audio/video signal routing in battery-powered systems and precision data acquisition.
For engineers reviewing the DG442LDQ-E3 datasheet, DG442LDQ-E3 pinout, DG442LDQ-E3 application, or DG442LDQ-E3 equivalent, key selection criteria include single/dual supply operation (2.7–12 V or ±3–±6 V), 0.25 nA leakage, 2000 V ESD protection, and TSSOP-16 package compatibility with industry-standard layout footprints.
Technical Context
The DG442LDQ-E3 implements complementary CMOS switch architecture with BiCMOS fabrication, enabling flat RDS(on) over full analog signal range and minimal charge injection (5 pC). Its control logic is inverted relative to DG441L: logic high disables all switches, logic low enables them.
It supports rail-to-rail analog signal handling (0–12 V single supply or ±5 V dual supply), features TTL/CMOS-compatible digital inputs (VIL ≤ 0.8 V, VIH ≥ 2.4 V), and delivers -50 dB off-isolation and -95 dB crosstalk at 50 MHz - critical for high-fidelity signal integrity in multiplexed measurement paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance | 17 Ω typical at 12 V supply - ensures minimal signal attenuation and thermal drift in precision gain-setting and sensor interface circuits |
| Turn-on / Turn-off time | 20 ns / 12 ns - enables fast channel switching in automated test equipment without timing-induced settling errors |
| Analog signal range | 0 to 12 V (single supply) or ±5 V (dual supply) - supports full-rail operation in mixed-signal systems without level-shifting |
| Leakage current | 0.25 nA max - preserves accuracy in high-impedance sample-and-hold and microamp-level sensor front-ends |
| ESD protection | 2000 V HBM - reduces need for external transient suppression in handheld and field-deployable instrumentation |
| Off-isolation | -50 dB at 50 MHz - prevents signal bleed between channels in RF-adjacent audio routing applications |
| Charge injection | 5 pC - limits voltage glitch amplitude in precision integrators and switched-capacitor filters |
Pinout & Package
Package: 16-pin TSSOP (JEDEC MS-012, 4.4 mm × 5.0 mm × 1.2 mm height), lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 (IN1–IN4) | Digital control input | Active-low logic: low = switch closed; compatible with 3.3 V/5 V microcontrollers without level shifters |
| 5, 6, 13, 14 (S1–S4) | Switch source terminal | Common analog node per channel; connects to signal source in SPST configuration |
| 7, 8, 11, 12 (D1–D4) | Switch drain terminal | Output node per channel; routed to ADC input, amplifier stage, or signal path |
| 9 (GND) | Analog/digital ground reference | Single shared ground for both analog and digital sections - requires star grounding for optimal noise rejection |
| 10 (NC) | No-connect | Internally unconnected; must remain floating - no PCB trace or via allowed |
| 15 (V−) | Negative supply rail | Required for dual-supply operation; tied to GND in single-supply mode |
| 16 (V+) | Positive supply rail | Supplies internal bias and switch driver; decoupling capacitor (0.1 µF) mandatory adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Prevents momentary shorting between channels during state transition - essential for avoiding signal transients in multiplexed sensor arrays |
| Rail-to-rail analog capability | Supports signals from V− to V+ without clipping - eliminates need for external clamping diodes in ±5 V systems |
| Low on-resistance match | ΔRDS(on) ≤ 0.5 Ω - maintains channel-to-channel gain consistency in programmable-gain amplifiers |
| High-speed switching | tON/tOFF ≤ 20/12 ns - meets timing budgets in 10 MSPS data acquisition systems with <1 LSB settling error |
| Low charge injection | 5 pC - restricts hold-mode voltage step to <50 µV in 10 nF sample capacitors, preserving 16-bit resolution |
Applications
| Precision Data Acquisition | Audio Signal Routing |
|---|---|
Use Scenario: Multiplexing thermocouple, RTD, and strain gauge inputs into a 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Quad SPST switch isolating each sensor path before the instrumentation amplifier; controlled by FPGA GPIO with 100 ns setup/hold margin. Use Value: 0.25 nA leakage prevents >1 LSB offset drift at 100 MΩ source impedance; 17 Ω RDS(on) avoids gain error in 1 kΩ–10 kΩ feedback networks. | Use Scenario: Selecting between four stereo line-level sources (DAC outputs, aux inputs, Bluetooth codec, tuner) feeding a Class D amplifier. IC Role / Device Role / Timing Role: Analog signal path selector with simultaneous L/R channel switching; driven by microcontroller I²C GPIO expander. Use Value: -50 dB off-isolation suppresses crosstalk below audible threshold (-80 dBu); rail-to-rail swing preserves dynamic range across 2 VPP signals. |
| Battery-Powered Test Equipment | Programmable-Gain Amplifier |
Use Scenario: Handheld multimeter with auto-ranging analog front-end switching between voltage, current, and resistance measurement modes. IC Role / Device Role / Timing Role: Isolating shunt resistors, divider networks, and op-amp configurations under MCU control; powered from 3.7 V Li-ion cell. Use Value: 2.7 V minimum supply enables operation down to 3.3 V battery voltage; 2000 V ESD protection withstands repeated probe contact discharge. | Use Scenario: Digital potentiometer replacement in a medical EEG amplifier with selectable gains of 100×, 200×, 500×, and 1000×. IC Role / Device Role / Timing Role: Switching precision metal-film resistors into op-amp feedback loop; controlled by isolated SPI interface. Use Value: ΔRDS(on) ≤ 0.5 Ω ensures gain error <0.05% across all ranges; low leakage avoids DC offset accumulation in AC-coupled biopotential paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4618ESE+ | Higher RDS(on) (45 Ω typ), slower tON (40 ns), but offers fault protection and overvoltage tolerance up to ±20 V | Suitable for industrial PLC I/O modules where input overvoltage risk exists, not for low-distortion audio | Select when robustness against field wiring faults outweighs speed and on-resistance requirements |
| ADG1412BRUZ | Lower RDS(on) (1.3 Ω typ), higher supply voltage (up to ±15 V), but larger 16-lead TSSOP (5 mm × 4.4 mm) and higher cost | Preferred for high-precision laboratory instruments requiring sub-0.1% gain matching and wide dynamic range | Choose when ultra-low on-resistance and temperature stability are critical, and board space allows larger footprint |
Compared with MAX4618ESE+ and ADG1412BRUZ, the DG442LDQ-E3 provides optimal balance of speed, on-resistance, and supply flexibility for portable and cost-sensitive precision signal routing - especially where 3–12 V operation and compact TSSOP-16 layout are design constraints.
Availability
DG442LDQ-E3 is available at Aetrix Electronics and suitable for precision data acquisition, battery-powered test equipment, audio routing, and programmable-gain amplifier designs requiring stable component supply and long-term production continuity.
Supply support for DG442LDQ-E3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay Siliconix is a global semiconductor manufacturer specializing in discrete components, analog switches, and power management ICs, with emphasis on high-reliability, high-performance solutions for industrial and automotive markets.
The DG442LDQ-E3 belongs to Vishay's precision analog switch product line, engineered specifically for low-distortion, low-leakage signal routing in measurement, instrumentation, and portable electronics where rail-to-rail performance and fast switching are critical.
FAQ
What supply voltage ranges does the DG442LDQ-E3 support?
The DG442LDQ-E3 operates from 2.7 V to 12 V single supply (with V− tied to GND) or ±3 V to ±6 V dual supply. At 12 V, RDS(on) is 17 Ω typical; at ±5 V, it is 20 Ω typical. The device guarantees full functionality across its specified temperature range (-40 °C to +85 °C) under these conditions. DG442LDQ-E3 maintains rail-to-rail analog signal handling within these supply boundaries.
Is the DG442LDQ-E3 pin-compatible with the standard DG442?
Yes, the DG442LDQ-E3 is pin-for-pin compatible with the industry-standard DG442 family and its low-voltage companion DG442L. It shares identical pinout, package dimensions (TSSOP-16), and functional block diagram. The "L" suffix denotes improved performance including lower on-resistance and faster switching versus legacy DG442 variants. DG442LDQ-E3 retains the same truth table and control logic polarity.
What is the maximum analog signal frequency supported by the DG442LDQ-E3?
The DG442LDQ-E3 maintains -3 dB insertion loss at 280 MHz under 12 V single-supply conditions, with -50 dB off-isolation and -95 dB crosstalk measured at 50 MHz. Its bandwidth is limited by channel capacitance (CD(on) = 15 pF, CS(off)/CD(off) ≈ 5–6 pF) and RDS(on). For high-fidelity audio (20 Hz–20 kHz) and video baseband (up to ~5 MHz), DG442LDQ-E3 introduces negligible phase or amplitude distortion.
Does the DG442LDQ-E3 require external pull-up or pull-down resistors on its digital inputs?
No, the DG442LDQ-E3 has TTL/CMOS-compatible inputs with guaranteed switching thresholds (VIL ≤ 0.8 V, VIH ≥ 2.4 V) and low input current (<1.5 µA). It interfaces directly with 3.3 V or 5 V microcontrollers, FPGAs, and logic devices without external biasing. DG442LDQ-E3 input structure includes internal ESD protection diodes referenced to V+ and GND, making external resistors unnecessary for normal operation.
How does the DG442LDQ-E3 handle analog signals exceeding the supply rails?
The DG442LDQ-E3 includes internal clamping diodes that limit analog signals on Sx or Dx pins to V+ + 0.3 V and V− − 0.3 V. Exceeding these limits risks forward-biasing the diodes and exceeding the absolute maximum current rating (30 mA continuous). To protect against overvoltage, external series resistors must be used to limit diode current - DG442LDQ-E3 does not provide fault protection beyond this intrinsic clamping behavior.
DG442LDQ-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 30Ohm
- Channel-to-Channel Matching (ΔRon):
- 100mOhm
- Voltage - Supply, Single (V+):
- 2.7V ~ 12V
- Voltage - Supply, Dual (V±):
- ±3V ~ 6V
- Switch Time (Ton, Toff) (Max):
- 60ns, 35ns
- -3db Bandwidth:
- 280MHz
- Charge Injection:
- 5pC
- Channel Capacitance (CS(off), CD(off)):
- 5pF, 6pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -95dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
DG442LDQ-E3 FAQ
1.How can I place an order for DG442LDQ-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG442LDQ-E3 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DG442LDQ-E3 reliable?
The price and inventory of DG442LDQ-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG442LDQ-E3 is usually 5 days.
3.What payment methods are accepted for DG442LDQ-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG442LDQ-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG442LDQ-E3?
DG442LDQ-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG442LDQ-E3 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DG442LDQ-E3?
For technical support, including DG442LDQ-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG442LDQ-E3 requirements.
6.How does Aetrix verify that DG442LDQ-E3 is sourced from the original manufacturer or authorized distributors?
All DG442LDQ-E3 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DG442LDQ-E3 meets industry standards.
7.What is the process for return or replacement of DG442LDQ-E3?
All DG442LDQ-E3 units undergo pre-shipment inspection (PSI). If there is an issue with DG442LDQ-E3, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DG442LDQ-E3 part is unused and in its original packaging.
Return procedure for DG442LDQ-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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