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Renesas DG445DVZ-T
- Part No.:
- DG445DVZ-T
- Manufacturer:
- Renesas
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
DG445DVZ-T.pdf
- Description:
- IC SW SPST-NOX4 85OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,868
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Product details
Overview
DG445DVZ-T from Intersil is a monolithic quad SPST CMOS analog switch with TTL/CMOS-compatible digital inputs, designed for bidirectional signal routing in precision analog systems. It delivers <85 Ω ON resistance, 250 ns max tON, ±20 V analog signal handling (with ±20 V supplies), and low 1 pC charge injection-enabling high-fidelity sample-and-hold and audio switching.
For engineers reviewing the DG445DVZ-T datasheet, DG445DVZ-T pinout, DG445DVZ-T application, or DG445DVZ-T equivalent, key selection criteria include logic polarity (active-HIGH control), TSSOP-16 RoHS-compliant packaging, split/single-supply operation, and verified performance in data acquisition and communication systems.
Technical Context
The DG445DVZ-T implements four independent bilateral SPST switches using a high-voltage silicon-gate CMOS process with epitaxial latch-up protection. Its logic polarity is inverted relative to DG444: INx = HIGH enables conduction (ON), while LOW disables (OFF).
It supports dual-supply operation up to ±20 V (44 V total) and single-supply operation from 0 V to +12 V. Analog signal range spans ±15 V (dual) or 0–12 V (single), with matched ON-resistance flatness across that range and sub-5 pF OFF capacitance per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ON Resistance (rDS(ON)) | Max 85 Ω at ±15 V supplies; ensures minimal signal attenuation and gain error in precision gain-setting networks. |
| Turn-On Time (tON) | Max 250 ns (dual supply); enables sampling rates up to ~1.5 MHz in multiplexed data acquisition paths. |
| Charge Injection | Typ −1 pC; reduces hold-step error and settling time in sample-and-hold circuits without additional correction. |
| Analog Signal Range | ±15 V (dual supply) or 0–12 V (single supply); supports industrial sensor interfaces and audio line-level signals. |
| OFF Isolation | Min 60 dB at 1 MHz; suppresses crosstalk between active and inactive channels in multi-channel ATE systems. |
| Supply Voltage Range | V+ to V− ≤ 44 V; allows direct control of ±20 V analog signals without level-shifting circuitry. |
| Logic Compatibility | TTL- and CMOS-compatible inputs (0.8 V low / 2.4 V high thresholds); interfaces directly with microcontrollers and FPGAs. |
Pinout & Package
Package: 16-lead Thin Shrink Small Outline Plastic Package (TSSOP), Pb-free plus anneal (RoHS compliant), JEDEC MO-153-AB compliant, body dimensions 5.0 mm × 4.4 mm × 1.0 mm (max height).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8, 9, 16 | IN1–IN4 | Active-HIGH logic control inputs; HIGH = switch ON (DG445 logic polarity). |
| 2, 7, 10, 15 | D1–D4 | Drain (output) terminals; bidirectional-function as input or output depending on signal flow direction. |
| 3, 6, 11, 14 | S1–S4 | Source (input) terminals; paired with Dx to form four independent SPST switches. |
| 4 | V− | Negative power supply rail; must be connected for dual-supply operation or grounded for single-supply use. |
| 5 | GND | Logic ground reference; separate from power grounds in mixed-signal layouts to minimize noise coupling. |
| 12 | VL | Logic supply reference; accepts 5 V (typical) to define input threshold levels independent of analog rails. |
| 13 | V+ | Positive power supply rail (also substrate connection); establishes upper analog voltage limit and switch bias. |
Key Features
| Feature | Design Value |
|---|---|
| Bilateral SPST architecture | Enables true AC-coupled and bidirectional signal routing-critical for audio path switching and sensor excitation reversal. |
| Low 1 pC charge injection | Reduces hold-mode voltage step in sample-and-hold circuits, eliminating need for external zeroing or calibration. |
| 85 Ω max rDS(ON) with flatness over ±5 V | Maintains consistent channel gain/attenuation across full analog range-essential for programmable gain amplifier accuracy. |
| 44 V max V+ to V− rating | Supports ±20 V analog signal control without external clamping or level translation, simplifying high-voltage interface design. |
| Pb-free plus anneal (RoHS) | Compatible with both SnPb and Pb-free reflow profiles per IPC/JEDEC J-STD-020; eliminates post-process annealing requirements. |
Applications
| Audio Switching | Data Acquisition |
|---|---|
|
Use Scenario: Routing line-level stereo signals between multiple sources and outputs in professional audio mixers. IC Role / Device Role / Timing Role: Quad SPST analog switch providing silent, glitch-free channel selection with <250 ns switching. Use Value: Low 1 pC charge injection prevents audible pop/click during switching; <85 Ω rDS(ON) preserves signal integrity across 10 kΩ load impedances. |
Use Scenario: Multiplexing sensor outputs (thermocouples, strain gauges) into a shared ADC front-end. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sampling with minimal channel-to-channel crosstalk (<−100 dB). Use Value: 60 dB OFF isolation at 1 MHz rejects interference from adjacent channels; ±15 V range accommodates unconditioned sensor outputs. |
| Sample and Hold Circuits | Communication Systems |
|
Use Scenario: Capturing fast transient waveforms in oscilloscope or spectrum analyzer front-ends. IC Role / Device Role / Timing Role: Low-charge-injection switch isolating hold capacitor during acquisition phase. Use Value: −1 pC typical charge injection minimizes hold-step error; 250 ns tON supports >1 MHz sampling without aperture jitter penalty. |
Use Scenario: Signal path configuration in RF test equipment-switching between filters, amplifiers, and detectors. IC Role / Device Role / Timing Role: High-isolation analog switch managing signal routing in automated test equipment (ATE) racks. Use Value: <5 pF OFF capacitance and 60 dB isolation preserve impedance matching and minimize insertion loss at 1 MHz–10 MHz bands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617ESE+ | Higher 100 Ω max rDS(ON); 300 ns tON; requires VL = V+ (no independent logic rail). | Less suitable for precision gain networks or fast sampling; better for cost-sensitive, lower-performance industrial I/O. | Select when logic supply sharing simplifies BOM and ±15 V signal range suffices. |
| ADG1419BRUZ | Lower 0.6 Ω rDS(ON); 150 ns tON; but only ±15 V max supply; no VL pin (logic tied to V+). | Superior for ultra-low-distortion audio or high-speed DAQ-but incompatible with ±20 V signal control or independent logic referencing. | Select when ultimate ON-resistance and speed outweigh voltage range and logic flexibility requirements. |
Compared with MAX4617ESE+ and ADG1419BRUZ, the DG445DVZ-T uniquely balances ±20 V analog control, independent VL logic referencing, low charge injection, and TSSOP-16 RoHS packaging-making it optimal for mixed-voltage, precision-switching applications where signal fidelity and supply flexibility are critical.
Availability
DG445DVZ-T is available at Aetrix Electronics and suitable for audio switching, data acquisition, and sample-and-hold circuits requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for DG445DVZ-T 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
Intersil Corporation (now part of Renesas Electronics) designs high-performance analog and power management ICs, with emphasis on precision, reliability, and industrial-grade specifications.
The DG445DVZ-T belongs to Intersil's legacy analog switch family, engineered specifically for upgrade paths from DG211/DG212 in high-reliability, wide-supply-range instrumentation and test systems.
FAQ
What is the logic polarity of DG445DVZ-T compared to DG444DVZ-T?
The DG445DVZ-T uses active-HIGH logic control: an input voltage ≥2.4 V turns the corresponding switch ON, while ≤0.8 V turns it OFF. This is the inverse of DG444DVZ-T, which is active-LOW. The DG445DVZ-T truth table confirms INx = HIGH → ON state, making it compatible with standard microcontroller GPIO outputs without inversion logic.
Can DG445DVZ-T operate from a single +12 V supply?
Yes, DG445DVZ-T supports single-supply operation with V+ = +12 V and V− = GND. In this mode, the analog signal range is 0–12 V, rDS(ON) rises to max 200 Ω, and tON increases to 450 ns. The VL pin must still be supplied with 5 V to maintain proper logic thresholds, and GND serves as the common reference for both analog and digital domains.
What is the maximum allowable analog signal voltage for DG445DVZ-T?
The DG445DVZ-T supports analog signals from V− to V+, with absolute maximum ratings of V+ to V− ≤ 44 V. When operated with ±20 V supplies, the full analog range is ±20 V. However, the Electrical Specifications guarantee performance over ±15 V (dual supply) or 0–12 V (single supply). Exceeding these ranges risks parametric degradation but remains within safe operating area per Absolute Maximum Ratings.
How does the VL pin function in DG445DVZ-T?
The VL pin sets the logic reference voltage for the digital inputs, decoupling logic thresholds from the analog supply rails. It accepts 5 V (typical) and defines the 0.8 V low / 2.4 V high input thresholds independently of V+ and V−. This allows clean interfacing with 3.3 V or 5 V controllers even when analog supplies are ±15 V or higher-preventing logic misstates due to supply rail mismatch.
Is DG445DVZ-T pin-compatible with DG444DVZ-T?
Yes, DG445DVZ-T is pin-compatible with DG444DVZ-T in the same TSSOP-16 package (M16.173), sharing identical pinout, footprint, and thermal characteristics. The only functional difference is logic polarity: DG445DVZ-T is active-HIGH, DG444DVZ-T is active-LOW. No PCB changes are required for substitution-only firmware or control logic must be updated to invert enable signals.
DG445DVZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 85Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 5V ~ 34V
- Voltage - Supply, Dual (V±):
- ±5V ~ 22V
- Switch Time (Ton, Toff) (Max):
- 250ns, 210ns
- -3db Bandwidth:
- -
- Charge Injection:
- -1pC
- Channel Capacitance (CS(off), CD(off)):
- 4pF, 4pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -100dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
DG445DVZ-T FAQ
1.How can I place an order for DG445DVZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for DG445DVZ-T 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 DG445DVZ-T reliable?
The price and inventory of DG445DVZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG445DVZ-T is usually 5 days.
3.What payment methods are accepted for DG445DVZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG445DVZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG445DVZ-T?
DG445DVZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG445DVZ-T 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 DG445DVZ-T?
For technical support, including DG445DVZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG445DVZ-T requirements.
6.How does Aetrix verify that DG445DVZ-T is sourced from the original manufacturer or authorized distributors?
All DG445DVZ-T 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 DG445DVZ-T meets industry standards.
7.What is the process for return or replacement of DG445DVZ-T?
All DG445DVZ-T units undergo pre-shipment inspection (PSI). If there is an issue with DG445DVZ-T, 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 DG445DVZ-T part is unused and in its original packaging.
Return procedure for DG445DVZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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