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Analog Devices Inc./Maxim Integrated DG445DJ+
- Part No.:
- DG445DJ+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
DG445DJ+.pdf
- Description:
- IC SWITCH SPST-NOX4 85OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,510
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Product details
Overview
DG445DJ+ from Maxim Integrated is a quad, single-pole/single-throw (SPST), normally open analog switch IC designed for precision signal routing in bipolar or single-supply systems. It delivers 85Ω max on-resistance at ±15V, <5nA off-leakage at +85°C, 10pC max charge injection, and switching times of <250ns tON / <70ns tOFF - enabling high-fidelity audio, test equipment, and military radio front-end switching.
For engineers reviewing the DG445DJ+ datasheet, DG445DJ+ pinout, DG445DJ+ application, or DG445DJ+ equivalent, key selection criteria include guaranteed RON matching (4Ω max), rail-to-rail analog signal handling (±15V), TTL/CMOS logic compatibility, ESD tolerance (2000V min), and operation across -40°C to +85°C industrial temperature range.
Technical Context
The DG445DJ+ implements four independent SPST switches with complementary control logic: logic-high input closes the switch (NO configuration). It uses a 44V silicon-gate process and supports dual-supply operation (±4.5V to ±20V) or single-supply operation (+10V to +30V), with VL pin configurable for TTL (5V) or CMOS (V+) logic thresholds.
Its architecture guarantees on-resistance flatness (9Ω max over ±15V signal range) and channel-to-channel RON match (4Ω max) under bipolar conditions - critical for matched gain paths and sample-and-hold accuracy. Off-isolation rejection ratio exceeds 60dB at 1MHz, and crosstalk remains below -100dB between any two channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RDS(ON)) | 85Ω max at ±15V, ensuring minimal signal attenuation in precision analog paths |
| On-Resistance Match | 4Ω max between channels, enabling matched gain/attenuation in multi-channel instrumentation |
| Charge Injection | 10pC max, limiting voltage glitch in sample-and-hold and ADC front-end applications |
| Off-Leakage Current | <5nA at +85°C, preserving DC accuracy in high-impedance sensor interfaces |
| Switching Time (tON/tOFF) | <250ns / <70ns, supporting fast multiplexing in automated test equipment |
| Analog Signal Range | ±15V rail-to-rail, allowing full utilization of bipolar op-amp output stages |
| ESD Tolerance | 2000V min per Method 3015.7, enhancing robustness in handling and board-level integration |
Pinout & Package
Package: 16-pin plastic DIP (0.300" wide), lead-free and RoHS-compliant (DG445DJ+).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 (Pins 15,14,7,6) | Logic Control Inputs | TTL/CMOS-compatible digital inputs controlling individual SPST switch states (active-high for NO function) |
| D1–D4 (Pins 16,13,5,8) | Drain Outputs | Analog output terminals; connected to load when switch is closed |
| S1–S4 (Pins 1,3,4,12) | Source Outputs | Analog input terminals; bidirectional conduction allows flexible signal path routing |
| V+ (Pin 11) | Positive Supply Voltage | Connects to +10V to +30V (single) or positive rail of ±4.5V to ±20V (dual); also substrate connection |
| V− (Pin 2) | Negative Supply Voltage | Required for bipolar operation; connects to −4.5V to −20V or GND for single-supply use |
| GND (Pin 5) | Ground Reference | Logic and substrate reference point; separate from analog signal ground in mixed-signal layouts |
| VL (Pin 10) | Logic Supply Voltage | Configures logic threshold: 5V for TTL compatibility or tied to V+ for CMOS-level inputs |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPST NO Configuration | Four independent normally open switches enable discrete signal path activation without cross-talk interference |
| Rail-to-Rail Analog Handling | Supports ±15V analog signals with no clipping, ideal for interfacing with precision op-amps and DACs |
| Guaranteed RON Flatness | 9Ω max variation across full ±15V signal range ensures consistent gain/attenuation in measurement circuits |
| Low Power Consumption | 35µW max total supply current enables use in battery-operated portable test gear and avionics |
| Bipolar & Single-Supply Flexibility | Operates from ±4.5V to ±20V or +10V to +30V, simplifying power architecture in mixed-voltage systems |
Applications
| Audio Signal Routing | Test Equipment Multiplexing |
|---|---|
Use Scenario: Switching line-level analog audio between multiple sources and outputs in professional mixing consoles. IC Role / Device Role / Timing Role: Quad SPST NO switch providing isolated, low-distortion signal paths with minimal crosstalk (-100dB). Use Value: 10pC max charge injection prevents audible pop/click during switching; 85Ω RON avoids level mismatch in 600Ω impedance environments. |
Use Scenario: Channel selection in automated test equipment for routing calibration signals to DUT inputs. IC Role / Device Role / Timing Role: Precision analog switch enabling fast (<250ns), repeatable signal path reconfiguration under microcontroller control. Use Value: Guaranteed 4Ω RON match ensures identical insertion loss across all four channels, critical for measurement repeatability. |
| Sample-and-Hold Circuits | Military Radio Front-Ends |
Use Scenario: Sampling analog sensor data into high-resolution ADCs in industrial monitoring systems. IC Role / Device Role / Timing Role: Low-charge-injection switch isolating hold capacitor from input during acquisition phase. Use Value: 10pC max charge injection limits sampling error to <1 LSB in 16-bit systems using 10nF hold capacitors. |
Use Scenario: Antenna and filter bank switching in ruggedized HF/VHF transceivers operating across -40°C to +85°C. IC Role / Device Role / Timing Role: High-reliability analog switch managing RF front-end signal routing under extreme environmental stress. Use Value: <5nA off-leakage at +85°C preserves dynamic range; 2000V ESD rating withstands field-handling events without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1414BRUZ | 4-channel SPST, 1.5Ω typical RON, but only rated for ±15V max supply; no guaranteed RON match spec | Better RON for low-voltage precision, but lacks DG445DJ+'s extended ±20V supply range and leakage performance at +85°C | Select when ultra-low on-resistance dominates; avoid where high-temp leakage or extended supply headroom is critical |
| TS5A23157PWR | Single-supply only (1.65V–5.5V), 0.9Ω RON, 30pC charge injection, rated only to +85°C with higher leakage (>50nA) | Optimized for low-voltage portable devices; incompatible with bipolar supplies or high-precision analog signal integrity requirements | Use only in 3.3V/5V systems where speed and low RON outweigh leakage and voltage range constraints |
Compared with ADG1414BRUZ and TS5A23157PWR, the DG445DJ+ uniquely combines extended bipolar supply support (±20V), guaranteed RON matching (4Ω), and sub-5nA off-leakage at +85°C - making it the only option qualified for military-grade analog signal routing where voltage range, matching, and thermal stability are simultaneously required.
Availability
DG445DJ+ is available at Aetrix Electronics and suitable for test equipment, military radios, and battery-operated systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for DG445DJ+ 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
Maxim Integrated (now part of Analog Devices) designs high-performance analog and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The DG445DJ+ belongs to Maxim's precision analog switch family, engineered specifically for applications requiring low distortion, matched channel performance, and robust operation in harsh electrical and thermal environments.
FAQ
What is the maximum allowable supply voltage for DG445DJ+?
The DG445DJ+ supports absolute maximum ratings of V+ = 44V referenced to V−, with recommended dual-supply operation from ±4.5V to ±20V or single-supply operation from +10V to +30V. Exceeding ±20V or +30V risks permanent damage, even if within the 44V differential limit. The DG445DJ+ datasheet specifies these ranges under "Absolute Maximum Ratings" and "Electrical Characteristics" sections.
Does DG445DJ+ support rail-to-rail analog signal switching?
Yes, the DG445DJ+ supports rail-to-rail analog signal handling up to ±15V when operated with ±15V supplies. Its analog signal range is specified as ±15V in the Electrical Characteristics table, meaning signals from V− to V+ can pass through the switch with minimal distortion or clipping - a key feature confirmed in Figures DG444/5-4 through DG444/5-7 of the official datasheet.
How does the VL pin affect logic compatibility in DG445DJ+?
The VL pin sets the logic threshold voltage for IN1–IN4 inputs. When VL = 5V, the DG445DJ+ accepts standard TTL logic levels (0.8V low, 2.4V high). When VL = V+, it operates with CMOS-compatible thresholds (near V− for low, near V+ for high). This dual-mode flexibility is explicitly defined in the "Applications Information" section and Pin Description table of the DG445DJ+ datasheet.
Is DG445DJ+ pin-compatible with legacy DG445 variants?
Yes, the DG445DJ+ shares identical pinout and footprint with other 16-pin DIP variants including DG445CJ and DG445DJ (non-+ suffix). The "+" denotes lead-free/RoHS-compliant packaging but retains full electrical and mechanical compatibility. Pin configurations are verified in the "Pin Configurations/Functional Diagrams" section of the DG445DJ+ datasheet (page 8, top-view diagram).
What is the guaranteed off-leakage current specification for DG445DJ+ at +85°C?
The DG445DJ+ guarantees drain and source off-leakage current (ID(OFF) and IS(OFF)) of ±5nA maximum at +85°C, as stated in the "Electrical Characteristics-Dual Supplies" table (page 2). This value is 100% tested at maximum rated hot temperature and is a key differentiator versus older analog switches that degrade significantly above +70°C.
DG445DJ+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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):
- 4Ohm (Max)
- Voltage - Supply, Single (V+):
- 10V ~ 30V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 250ns, 170ns
- -3db Bandwidth:
- -
- Charge Injection:
- 5pC
- 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:
- Through Hole
- Supplier Device Package:
- 16-PDIP
DG445DJ+ FAQ
1.How can I place an order for DG445DJ+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG445DJ+ 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 DG445DJ+ reliable?
The price and inventory of DG445DJ+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG445DJ+ is usually 5 days.
3.What payment methods are accepted for DG445DJ+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG445DJ+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG445DJ+?
DG445DJ+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG445DJ+ 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 DG445DJ+?
For technical support, including DG445DJ+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG445DJ+ requirements.
6.How does Aetrix verify that DG445DJ+ is sourced from the original manufacturer or authorized distributors?
All DG445DJ+ 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 DG445DJ+ meets industry standards.
7.What is the process for return or replacement of DG445DJ+?
All DG445DJ+ units undergo pre-shipment inspection (PSI). If there is an issue with DG445DJ+, 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 DG445DJ+ part is unused and in its original packaging.
Return procedure for DG445DJ+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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