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Vishay Siliconix DG309BDQ-T1-E3
- Part No.:
- DG309BDQ-T1-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
DG309BDQ-T1-E3.pdf
- Description:
- IC SW SPST-NCX4 85OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,023
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Product details
Overview
DG309BDQ-T1-E3 from Vishay Siliconix is a quad single-pole single-throw (SPST) analog switch with normally closed (NC) configuration, designed for precision signal routing in ±15 V dual-supply or 12 V single-supply systems. It delivers 45 Ω typical on-resistance, <200 ns turn-on time, 1 pC charge injection, ±22 V analog signal handling, and 90 dB off-isolation at 100 kHz - enabling high-fidelity switching in sample-and-hold and programmable gain amplifier circuits.
For engineers reviewing the DG309BDQ-T1-E3 datasheet, DG309BDQ-T1-E3 pinout, DG309BDQ-T1-E3 application, or DG309BDQ-T1-E3 equivalent, key selection criteria include guaranteed RDS(on) matching across channels, low leakage (<20 pA at ±14 V), bi-directional signal flow, latchup immunity via epitaxial layer, and TSSOP-16 RoHS-compliant packaging for space-constrained instrumentation layouts.
Technical Context
The DG309BDQ-T1-E3 implements four independent NC switches using silicon-gate CMOS process technology, supporting true bi-directional analog signal flow with blocking to supply rails in the off state. Its internal level-shifted drive circuitry accepts TTL/CMOS-compatible logic inputs (VINH ≥ 11 V, VINL ≤ 3.5 V) while operating across ±4 V to ±22 V dual supplies or 4 V to 44 V single supply.
Charge injection compensation minimizes switching transients, and an integrated epitaxial layer prevents latchup under overvoltage conditions. All channels maintain matched RDS(on) (ΔRDS(on) ≤ 2 %) and exhibit <150 ns turn-off time with 5 pF off-capacitance per terminal - critical for low-crosstalk multiplexing in 100 kHz–1 MHz signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15 V (dual supply); enables full-rail signal switching without clipping in ±15 V op-amp systems |
| RDS(on) | 45 Ω typ. (VD = ±10 V, IS = 1 mA); ensures minimal gain error and channel-to-channel mismatch in precision gain-setting networks |
| tON/tOFF | <200 ns / <150 ns; supports sampling rates up to 5 MHz in fast data acquisition paths |
| Charge Injection | 1 pC (CL = 1000 pF); limits voltage glitch to <1 mV in 12-bit sample-and-hold hold capacitors ≥1 nF |
| Off-Isolation | 90 dB @ 100 kHz (RL = 50 Ω); suppresses crosstalk between adjacent channels in multi-channel sensor front-ends |
| ID(off)/IS(off) | ±20 pA max. @ ±14 V; preserves DC accuracy in high-impedance transducer interfaces (>100 MΩ source impedance) |
| Supply Range | ±4 V to ±22 V dual; supports legacy industrial ±15 V rails and extended-range test equipment |
Pinout & Package
Package: 16-lead TSSOP (JEDEC MO-153, Vishay Doc. 74417), 4.4 mm × 5.0 mm footprint, 0.65 mm pitch, RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 (IN1–IN4) | Digital control input | Active-low logic interface: logic "0" (≤3.5 V) closes switch; logic "1" (≥11 V) opens switch |
| 5, 6, 12, 13 (S1–S4) | Source terminal | Bi-directional analog path input/output; connects to signal source or load depending on system topology |
| 7, 8, 11, 10 (D1–D4) | Drain terminal | Bi-directional analog path input/output; paired with Sx to form NC SPST switch; clamped to V+ or V− if overdriven |
| 9 (GND) | Logic ground reference | Reference for digital input thresholds; must be tied to system logic ground, not analog ground |
| 14 (V+) | Positive supply rail | Supports up to +22 V; powers internal level shifter and switch driver; decoupling required within 1 cm |
| 15 (V−) | Negative supply rail | Supports down to −22 V; enables bipolar signal handling; requires local bypass capacitor |
| 16 (NC) | No-connect | Internally unconnected; must remain floating or grounded per PCB layout best practices |
Key Features
| Feature | Design Value |
|---|---|
| Normally closed (NC) architecture | Ensures fail-safe signal continuity during power loss or logic fault - critical in safety-monitored sample-and-hold stages |
| Epitaxial latchup protection | Guarantees robust operation under transient overvoltage (e.g., ESD events or inductive kickback) without destructive latchup |
| Matched RDS(on) (≤2 %) | Enables precise ratio-metric gain switching in digitally programmable amplifiers without calibration overhead |
| Low 5 pF off-capacitance | Minimizes feedthrough coupling in high-frequency multiplexed sensor arrays (e.g., 100 kHz piezoelectric transducers) |
| TTL/CMOS-compatible inputs | Direct interface to microcontroller GPIO or FPGA outputs without level-shifting circuitry - reduces BOM count and layout area |
Applications
| Sample-and-Hold Circuits | Precision Programmable Gain Amplifiers |
|---|---|
|
Use Scenario: Capturing fast transient waveforms from sensors with minimal aperture error and droop. IC Role / Device Role / Timing Role: DG309BDQ-T1-E3 acts as the hold switch, closing during acquisition and opening on command to isolate the hold capacitor. Use Value: 1 pC charge injection and <150 ns tOFF limit aperture jitter to <100 ps, enabling accurate 12-bit sampling at 1 MSPS. |
Use Scenario: Digitally selecting feedback resistor ratios in op-amp gain stages for multi-range measurement systems. IC Role / Device Role / Timing Role: DG309BDQ-T1-E3 serves as a low-leakage, low-RDS(on) switch in the feedback network of LM101A-based amplifiers. Use Value: 45 Ω RDS(on) and ±20 pA leakage preserve gain accuracy across decades of resistance values (100 Ω to 100 kΩ). |
| Automated Test Equipment (ATE) Multiplexers | Industrial Process Monitoring Inputs |
|
Use Scenario: Routing multiple sensor outputs to a shared ADC in high-channel-count bench instruments. IC Role / Device Role / Timing Role: DG309BDQ-T1-E3 functions as a low-crosstalk, high-isolation channel selector in 16-channel analog backplanes. Use Value: 90 dB off-isolation and 5 pF CD(off)/CS(off) suppress inter-channel interference below −80 dB at 100 kHz test frequencies. |
Use Scenario: Conditioning 4–20 mA loop signals and thermocouple inputs in PLC analog input modules. IC Role / Device Role / Timing Role: DG309BDQ-T1-E3 isolates calibration reference paths from live field inputs during self-test sequences. Use Value: ±22 V signal range and −40 °C to +85 °C rating ensure reliable operation in harsh factory environments with wide common-mode swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4675ESE+ | Higher RDS(on) (120 Ω typ.), wider supply range (±25 V), but no NC variant - only NO (DG308B function) | Requires redesign for NC functionality; better suited for high-voltage open-circuit default paths | Select when ±25 V operation is mandatory and NC behavior can be implemented externally |
| ADG1409BRUZ | Lower RDS(on) (4.7 Ω typ.), 16-bit compatible charge injection (0.2 pC), but only available in SOIC-16 (not TSSOP) | Superior performance in high-resolution data acquisition, but larger PCB footprint and higher cost | Select when sub-1 LSB glitch budget and <5 Ω on-resistance justify SOIC-16 layout and cost premium |
Compared with MAX4675ESE+ and ADG1409BRUZ, the DG309BDQ-T1-E3 offers optimal balance of NC functionality, TSSOP-16 compactness, and verified 45 Ω/1 pC performance at industrial temperature range - making it preferred for space-constrained, cost-sensitive instrumentation where fail-safe closure is required.
Availability
DG309BDQ-T1-E3 is available at Aetrix Electronics and suitable for industrial instrumentation, automated test equipment, and precision sample-and-hold circuits requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG309BDQ-T1-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 leader in discrete semiconductors and passive components, specializing in high-reliability MOSFETs, diodes, optoelectronics, and analog switches engineered for rugged industrial and test environments.
The DG309BDQ-T1-E3 belongs to Vishay's DG30xB series of improved quad CMOS analog switches, designed specifically for precision signal routing in instrumentation, disk drives, and communications systems where low distortion, high isolation, and latchup immunity are mandatory.
FAQ
What is the maximum analog signal voltage the DG309BDQ-T1-E3 can handle?
The DG309BDQ-T1-E3 supports analog signals up to ±22 V relative to its V+ and V− supplies, with guaranteed operation across ±15 V dual-supply configurations. Internal clamping diodes protect terminals against overvoltage, but forward current must be limited to 30 mA per terminal per absolute maximum ratings. This makes DG309BDQ-T1-E3 suitable for interfacing with legacy ±15 V op-amps and industrial sensor outputs without external protection circuitry.
Does the DG309BDQ-T1-E3 require separate logic and analog grounds?
No - the DG309BDQ-T1-E3 uses a single GND pin (Pin 9) as the reference for digital input thresholds, and does not require isolated logic/analog grounds. However, best practice dictates routing GND separately from high-current analog return paths to minimize noise coupling. The device's internal level-shifter allows clean logic interfacing even when V+ and V− are far from GND potential, as confirmed in the functional block diagram and truth table of DG309BDQ-T1-E3 datasheet Document Number 70047.
How does the normally closed (NC) behavior of DG309BDQ-T1-E3 affect system safety during power loss?
The DG309BDQ-T1-E3 defaults to closed (conducting) when INx is logic low or unpowered, providing fail-safe signal continuity in power-loss scenarios. This is essential in sample-and-hold circuits where maintaining hold capacitor voltage is critical. Unlike NO switches (e.g., DG308B), DG309BDQ-T1-E3 ensures uninterrupted analog path integrity without auxiliary biasing - a key reliability feature validated in DG309BDQ-T1-E3 application note Figure 7.
Can DG309BDQ-T1-E3 operate from a single 12 V supply?
Yes - DG309BDQ-T1-E3 supports single-supply operation from 4 V to 44 V, with specified performance at V+ = 12 V, V− = 0 V. In this mode, analog signal range is 0 V to 12 V, RDS(on) increases to 90 Ω typ., and tON extends to 300 ns. These trade-offs are fully characterized in the "Specifications for Single Supply" table of DG309BDQ-T1-E3 datasheet Rev. G, enabling reliable use in battery-powered portable instruments.
What is the thermal derating behavior of DG309BDQ-T1-E3 above 75 °C?
For the TSSOP-16 package (DQ suffix), DG309BDQ-T1-E3 has a power dissipation limit of 640 mW at ≤75 °C, derating linearly at 12 mW/°C above that temperature. At 100 °C ambient, maximum allowable power drops to 340 mW. This derating is defined in Absolute Maximum Ratings Table and applies regardless of supply configuration - critical for thermal design in enclosed industrial enclosures where DG309BDQ-T1-E3 may operate near its −40 °C to +85 °C rated range limit.
DG309BDQ-T1-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 85Ohm
- Channel-to-Channel Matching (ΔRon):
- 1.7Ohm
- Voltage - Supply, Single (V+):
- 4V ~ 44V
- Voltage - Supply, Dual (V±):
- ±4V ~ 22V
- Switch Time (Ton, Toff) (Max):
- 200ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 5pF, 5pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -95dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
DG309BDQ-T1-E3 FAQ
1.How can I place an order for DG309BDQ-T1-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG309BDQ-T1-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 DG309BDQ-T1-E3 reliable?
The price and inventory of DG309BDQ-T1-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG309BDQ-T1-E3 is usually 5 days.
3.What payment methods are accepted for DG309BDQ-T1-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG309BDQ-T1-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG309BDQ-T1-E3?
DG309BDQ-T1-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG309BDQ-T1-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 DG309BDQ-T1-E3?
For technical support, including DG309BDQ-T1-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG309BDQ-T1-E3 requirements.
6.How does Aetrix verify that DG309BDQ-T1-E3 is sourced from the original manufacturer or authorized distributors?
All DG309BDQ-T1-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 DG309BDQ-T1-E3 meets industry standards.
7.What is the process for return or replacement of DG309BDQ-T1-E3?
All DG309BDQ-T1-E3 units undergo pre-shipment inspection (PSI). If there is an issue with DG309BDQ-T1-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 DG309BDQ-T1-E3 part is unused and in its original packaging.
Return procedure for DG309BDQ-T1-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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