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Diodes Incorporated AS393AMTR-G1
- Part No.:
- AS393AMTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AS393AMTR-G1.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,967
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Product details
Overview
AS393AMTR-G1 from Diodes Incorporated is a low-power, low-offset-voltage dual comparator IC with 1.0 mV typical input offset voltage, 0.6 mA supply current, and open-collector outputs. It operates from single supplies (2 V to 36 V) or split supplies (±1.0 V to ±18 V), features rail-to-rail input common-mode range including ground, and is used in battery chargers, DC-DC modules, and PC motherboard power monitoring circuits.
For engineers reviewing the AS393AMTR-G1 datasheet, AS393AMTR-G1 pinout, AS393AMTR-G1 application, or AS393AMTR-G1 equivalent, this page delivers verified electrical parameters, SO-8 package terminal mapping, real-world use cases in power management systems, and validated alternative comparators for design flexibility.
Technical Context
The AS393AMTR-G1 integrates two independent precision comparators with PNP-input stage architecture enabling input common-mode voltage down to ground and up to VCC−1.5 V. Its differential input voltage range equals the full supply voltage (up to ±18 V or 36 V), supporting wide dynamic signal detection without clamping.
It uses open-collector outputs compatible with TTL/CMOS logic levels, requiring external pull-up resistors. The device maintains stable 200 mV output saturation voltage at 4 mA sink current across −40°C to +85°C, and exhibits 200 ns large-signal response time under 5 mV overdrive conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 1.0 mV typical - enables accurate threshold detection in low-voltage sensing (e.g., battery voltage monitoring at <50 mV margins) |
| Supply Current | 0.6 mA typical at VCC = 5 V - supports energy-constrained applications like portable chargers and always-on system monitors |
| Input Bias Current | 25 nA typical - minimizes error in high-impedance reference divider networks (e.g., 1 MΩ+ feedback paths) |
| Output Sink Current | 16 mA maximum - drives standard LED indicators or directly interfaces with 74HC logic inputs without buffer stages |
| Common-Mode Range | 0 V to VCC−1.5 V - allows direct sensing of signals referenced to ground in single-supply systems (e.g., ADC reference monitoring) |
| Response Time | 200 ns typical - supports fast transient detection in switching power supply overvoltage/undervoltage protection |
| Saturation Voltage | 200 mV at 4 mA - ensures reliable low-state logic interpretation even with weak pull-ups (e.g., 10 kΩ to 5 V) |
Pinout & Package
AS393AMTR-G1 is housed in a RoHS-compliant, halogen-free SO-8 package (JEDEC MS-012AC), with 1.27 mm lead pitch, 5.0 mm × 4.0 mm body size, and moisture sensitivity level 3 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output 1 | Open-collector output of Comparator 1 - requires external pull-up; sinks current when IN1− > IN1+ |
| 2 | Input 1− | Inverting input of Comparator 1 - accepts signals up to VCC−1.5 V; common-mode range includes ground |
| 3 | Input 1+ | Non-inverting input of Comparator 1 - same voltage range and bias characteristics as Input 1− |
| 4 | GND | Analog ground reference - shared return path for both comparators and internal circuitry |
| 5 | Input 2+ | Non-inverting input of Comparator 2 - electrically identical to Input 1+; enables dual-threshold monitoring |
| 6 | Input 2− | Inverting input of Comparator 2 - matches Input 1− specs; supports independent second comparison channel |
| 7 | Output 2 | Open-collector output of Comparator 2 - functionally isolated from Output 1; supports separate logic loads |
| 8 | VCC | Positive supply rail - powers both comparators; supports 2 V to 36 V single-supply operation |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | 2 V to 36 V range eliminates need for negative rail in industrial sensors and automotive body electronics |
| Input common-mode range includes ground | Enables direct interface with 0 V–referenced voltage dividers (e.g., battery cell monitoring without level-shifting) |
| Low input offset voltage (1.0 mV typ) | Reduces false triggering in precision window comparators used for ±1% voltage tolerance checks |
| Open-collector outputs | Permits wired-OR logic, mixed-voltage interfacing (e.g., 3.3 V comparator driving 5 V microcontroller interrupt line) |
| Lead-free & Green packaging | SO-8 package meets RoHS 3 (2015/863/EU) and halogen-free requirements (<900 ppm Br/Cl, <1000 ppm Sb) |
Applications
| Battery Charger Monitoring | DC-DC Module OVP/UVP |
|---|---|
|
Use Scenario: Detecting end-of-charge voltage thresholds and thermal foldback in lithium-ion charger circuits. IC Role / Device Role / Timing Role: Dual comparator independently monitors battery voltage against upper and lower reference thresholds. Use Value: 1.0 mV offset ensures ≤5 mV total error in 4.2 V charge termination, improving capacity utilization by 0.8% vs. 5 mV-offset alternatives. |
Use Scenario: Real-time overvoltage and undervoltage protection in isolated flyback or buck-boost converters. IC Role / Device Role / Timing Role: One comparator triggers shutdown on VOUT > 125% nominal; second asserts warning flag at 90% nominal. Use Value: 200 ns response time detects 10 µs-duration transients, preventing MOSFET avalanche failure during load dump events. |
| PC Motherboard Power Sequencing | Cordless Telephone Power Management |
|
Use Scenario: Validating correct ramp-up sequence of +3.3 V, +5 V, and +12 V rails before releasing CPU reset. IC Role / Device Role / Timing Role: Each comparator verifies individual rail reaches ≥95% target before enabling next stage via open-collector wired-OR. Use Value: 0.6 mA supply current allows integration into always-on auxiliary power domains without compromising standby efficiency. |
Use Scenario: Monitoring NiMH battery pack voltage during charging and cut-off in DECT handsets. IC Role / Device Role / Timing Role: Dual comparators implement hysteresis-based delta-V detection and temperature-compensated voltage cutoff. Use Value: Input bias current of 25 nA avoids loading 100 kΩ thermistor-divider networks, preserving temperature measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Higher 2.0 mV max offset voltage; 0.8 mA supply current; same SO-8 package | Less suitable for sub-10 mV threshold detection; acceptable for general-purpose power-good signaling | Select when cost sensitivity outweighs precision requirements and 2 mV offset is acceptable |
| TLV3702IDR | Rail-to-rail input/output; 0.9 mV max offset; 85 µA supply current; but only 5.5 V max supply | Not usable in 12 V+ systems; ideal for ultra-low-power 3.3 V IoT sensor nodes | Choose for battery-powered designs needing <100 µA quiescent current and 3.3 V compatibility |
Compared with LM393DR, AS393AMTR-G1 offers tighter offset control and lower supply current for precision 5–36 V systems; versus TLV3702IDR, it trades ultra-low power for wider supply range and higher output drive capability in industrial power monitoring.
Availability
AS393AMTR-G1 is available at Aetrix Electronics and suitable for battery chargers, DC-DC modules, and PC motherboard power sequencing requiring stable component supply across automotive, industrial, and computing markets.
Supply support for AS393AMTR-G1 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
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions, with manufacturing certified to IATF 16949 and quality systems aligned with AEC-Q200 standards.
The AS393/393A series belongs to Diodes' precision analog comparators product line, engineered specifically for single-supply industrial power management where low offset, wide voltage range, and ground-sensing capability are critical.
FAQ
What is the maximum supply voltage for AS393AMTR-G1?
The absolute maximum supply voltage is 40 V, but the recommended operating range is 2 V to 36 V for single-supply operation. Exceeding 36 V risks exceeding internal junction temperature limits and may degrade long-term reliability, even if within absolute maximum ratings.
Can AS393AMTR-G1 operate with inputs above VCC?
Yes - the differential input voltage rating is ±40 V, and either input can safely reach +36 V regardless of VCC magnitude. However, the common-mode input range is limited to 0 V to VCC−1.5 V; inputs above VCC−1.5 V enter the non-linear region but remain non-destructive.
Is AS393AMTR-G1 pin-compatible with legacy AS393MTR-E1?
Yes - both use identical SO-8 pinout and electrical specifications. The AS393AMTR-G1 replaces the AS393MTR-E1 with stricter input offset voltage (≤3.0 mV vs. ≤5.0 mV) and Green/RoHS 3 compliance, while maintaining full functional and mechanical compatibility.
Does AS393AMTR-G1 require external pull-up resistors on its outputs?
Yes - both outputs are open-collector and must be pulled up to a valid logic high voltage (e.g., VCC or another rail). Typical values range from 2.2 kΩ (for 10 MHz toggle rates) to 10 kΩ (for low-power static indication); minimum pull-up voltage is 2 V, matching the device's lowest operating supply.
AS393AMTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Collector
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V, ±1V ~ 18V
- :
- 3mV @ 1.4V
- Voltage - Input Offset (Max):
- 0.4µA @ 5V
- Current - Input Bias (Max):
- 16mA
- Current - Output (Typ):
- 1mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
AS393AMTR-G1 FAQ
1.How can I place an order for AS393AMTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AS393AMTR-G1 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 AS393AMTR-G1 reliable?
The price and inventory of AS393AMTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AS393AMTR-G1 is usually 5 days.
3.What payment methods are accepted for AS393AMTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AS393AMTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AS393AMTR-G1?
AS393AMTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AS393AMTR-G1 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 AS393AMTR-G1?
For technical support, including AS393AMTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AS393AMTR-G1 requirements.
6.How does Aetrix verify that AS393AMTR-G1 is sourced from the original manufacturer or authorized distributors?
All AS393AMTR-G1 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 AS393AMTR-G1 meets industry standards.
7.What is the process for return or replacement of AS393AMTR-G1?
All AS393AMTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AS393AMTR-G1, 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 AS393AMTR-G1 part is unused and in its original packaging.
Return procedure for AS393AMTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AS393AMTR-G1 Tags
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