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Diodes Incorporated AS358MTR-G1
- Part No.:
- AS358MTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AS358MTR-G1.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:18,212
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Product details
Overview
AS358MTR-G1 from Diodes Incorporated is a low-power dual operational amplifier designed for single-supply operation (3V to 36V), featuring 100dB typical open-loop gain, 2mV typical input offset voltage, and 0.5mA typical supply current per amplifier. It operates across –40°C to +85°C and supports rail-to-rail input common-mode range including ground - used in battery chargers, switching power supplies, and transducer signal conditioning.
For engineers reviewing the AS358MTR-G1 datasheet, AS358MTR-G1 pinout, AS358MTR-G1 application, or AS358MTR-G1 equivalent, key selection criteria include input offset voltage tolerance, single-supply output swing (0V to VCC–1.5V), channel separation (–120dB at 1–20kHz), and SO-8 RoHS/Green compliance for industrial and consumer power management designs.
Technical Context
The AS358MTR-G1 integrates two independent, internally frequency-compensated op-amps with bipolar input stages enabling wide common-mode input range (0V to VCC–1.5V) and robust DC precision. Its architecture delivers 85–100dB large-signal voltage gain and 60–70dB common-mode rejection over full temperature range.
It supports dual- and single-supply configurations, with supply current independent of voltage magnitude. Output stage provides 20mA sourcing and 15mA sinking capability at ±15V, and short-circuit current limiting up to 60mA ensures reliability in transient-loaded circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single: 3V to 36V; Dual: ±1.5V to ±18V - enables direct integration into 5V/12V/24V systems without level-shifting. |
| Input Offset Voltage | 2mV typical (7µV/°C drift) - ensures <10mV total error in DC-coupled sensor amplifiers over industrial temperature range. |
| Large-Signal Voltage Gain | 100dB typical (≥85dB min) - provides ≥300k closed-loop gain stability for precision instrumentation front-ends. |
| Supply Current per Channel | 0.5mA typical at 5V - allows dual-opamp operation under 1mA total, critical for battery-powered monitoring nodes. |
| Output Voltage Swing | 0V to VCC–1.5V (RL = 2kΩ) - delivers >30V peak-to-peak swing at 36V supply, supporting high-dynamic-range feedback control. |
| Channel Separation | –120dB at 1–20kHz - prevents crosstalk in dual-channel signal paths like stereo audio preamps or differential sensor pairs. |
| Input Bias Current | 20nA typical - minimizes voltage error across high-impedance sources (e.g., thermistors, photodiodes). |
Pinout & Package
AS358MTR-G1 is housed in a lead-free, RoHS-compliant and halogen-free SO-8 package (5.0mm × 6.2mm, 1.75mm height), optimized for reflow soldering and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN– (Amplifier 1) | Inverting input node; accepts signals down to ground, enabling single-supply transducer interfacing. |
| 2 | IN+ (Amplifier 1) | Non-inverting input node; common-mode range includes GND, simplifying biasing in unipolar systems. |
| 3 | OUT (Amplifier 1) | Voltage output terminal; drives loads ≥2kΩ with 26V swing at 30V supply, suitable for ADC driver stages. |
| 4 | GND | Analog ground reference; shared return path for both amplifiers and external circuitry. |
| 5 | IN– (Amplifier 2) | Second inverting input; electrically isolated from Amp1 - enables independent dual-channel processing. |
| 6 | IN+ (Amplifier 2) | Second non-inverting input; identical electrical specs to Pin 2, supporting matched dual configurations. |
| 7 | OUT (Amplifier 2) | Second output; same drive strength and swing as Pin 3 - usable for complementary feedback or parallel gain staging. |
| 8 | VCC | Positive supply rail; accepts up to 40V absolute max, allowing margin above 36V operating limit. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable internal compensation | Eliminates need for external compensation components in standard inverting/non-inverting configurations. |
| Input common-mode range includes ground | Enables direct connection of 0V-referenced sensors (e.g., bridge outputs, thermocouples) without input bias networks. |
| Lead-free and "Green" packaging | SO-8 meets RoHS 3, halogen-free (<900ppm Br/Cl, <1000ppm Sb), reducing environmental impact and easing end-of-life compliance. |
| Low input offset voltage drift | 7µV/°C average tempco ensures <±0.3mV offset shift over –40°C to +85°C - critical for precision DC measurement. |
| High PSRR (100dB typical) | Maintains signal integrity in noisy power environments (e.g., SMPS feedback loops) with minimal supply ripple coupling. |
Applications
| Battery Charger Control | Switching Power Supply Feedback |
|---|---|
|
Use Scenario: Regulating charge current/voltage in Li-ion or lead-acid battery packs using voltage/current sense resistors and reference comparators. IC Role / Device Role / Timing Role: Dual op-amp implements independent current-sense amplifier and voltage-error amplifier in constant-current/constant-voltage loop. Use Value: 0.5mA/channel quiescent current extends standby runtime; rail-to-rail input enables direct sensing at 0V–36V range without level shifters. |
Use Scenario: Isolating and scaling primary-side feedback signals in offline AC/DC converters via optocoupler-driven error amplification. IC Role / Device Role / Timing Role: One amplifier conditions the AZ431 reference output; the other drives optocoupler LED with precise current mirroring. Use Value: –120dB channel separation prevents cross-talk between voltage and current feedback paths; 100dB gain ensures tight regulation accuracy. |
| Transducer Signal Conditioning | Cordless Telephone Audio Preamp |
|
Use Scenario: Amplifying low-level outputs from pressure sensors, load cells, or thermopiles in industrial IoT nodes. IC Role / Device Role / Timing Role: First amplifier acts as instrumentation-grade buffer; second provides programmable gain and filtering before ADC sampling. Use Value: 20nA input bias current avoids loading high-Z sensor elements; 2mV offset enables sub-1% error in 100mV full-scale measurements. |
Use Scenario: Boosting microphone signals and driving speaker drivers in DECT-class cordless handsets with limited PCB space. IC Role / Device Role / Timing Role: Dual configuration supports mic preamp + speaker driver or stereo line-level amplification in compact handset design. Use Value: SO-8 footprint saves board area vs. dual discrete op-amps; 36V supply headroom accommodates battery voltage sag during transmit bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM358DR | Higher input offset voltage (7mV typ), no Green/RoHS3 compliance, wider temp range (–25°C to +85°C only). | Less suitable for precision battery monitoring where offset drift affects state-of-charge accuracy. | Select LM358DR only if legacy qualification or cost sensitivity outweighs offset and environmental requirements. |
| TLV2372IDR | Rail-to-rail input/output, lower supply current (20µA/ch), but narrower supply range (2.7V–16V) and reduced output drive (8mA). | Preferred for ultra-low-power portable devices, but unsuitable for 24V industrial SMPS feedback. | Choose TLV2372IDR when operating below 16V and sub-100µA system budget is mandatory. |
Compared with LM358DR and TLV2372IDR, AS358MTR-G1 uniquely balances 36V operation, 2mV offset, SO-8 Green compliance, and 0.5mA supply - making it optimal for cost-sensitive yet precision-demanding 12–24V industrial power systems.
Availability
AS358MTR-G1 is available at Aetrix Electronics and suitable for battery charger control, switching power supply feedback, and transducer signal conditioning requiring stable component supply, long-term lifecycle support, and RoHS3-compliant manufacturing.
Supply support for AS358MTR-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 ICs for power management, signal integrity, and connectivity applications.
The AS358 series belongs to Diodes' precision analog portfolio, engineered for cost-effective, reliable dual op-amp performance in industrial, consumer, and computing power systems.
FAQ
What is the maximum junction temperature and thermal resistance for AS358MTR-G1 in SO-8?
The AS358MTR-G1 has a maximum junction temperature of +150°C. In SO-8 package, its thermal resistance is θJA = 115°C/W (junction-to-ambient) and θJC = 17°C/W (junction-to-case), enabling reliable operation at 0.7mA total supply current up to +85°C ambient with minimal heatsinking.
Can AS358MTR-G1 operate with a 3.3V single supply?
Yes - AS358MTR-G1 is fully specified down to 3V single supply. At 3.3V, it maintains 2mV typical input offset, 100dB gain, and output swing from 0V to ~1.8V (VCC–1.5V), supporting interface with 3.3V ADCs and microcontrollers without level-shifting.
Does AS358MTR-G1 support dual-supply operation?
Yes - it operates with dual supplies from ±1.5V to ±18V. The input common-mode range includes ground, and output swing extends to within 1.5V of each rail, enabling symmetric signal handling in audio and test equipment applications.
Is AS358MTR-G1 pin-compatible with industry-standard LM358?
Yes - AS358MTR-G1 uses the standard SO-8 pinout matching LM358, TL082, and other industry dual op-amps. Pin 1–4 and 5–8 map identically to IN–/IN+/OUT/GND and IN–/IN+/OUT/VCC, enabling drop-in replacement in existing layouts.
AS358MTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 700µA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AS358MTR-G1 FAQ
1.How can I place an order for AS358MTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AS358MTR-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 AS358MTR-G1 reliable?
The price and inventory of AS358MTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AS358MTR-G1 is usually 5 days.
3.What payment methods are accepted for AS358MTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AS358MTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AS358MTR-G1?
AS358MTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AS358MTR-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 AS358MTR-G1?
For technical support, including AS358MTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AS358MTR-G1 requirements.
6.How does Aetrix verify that AS358MTR-G1 is sourced from the original manufacturer or authorized distributors?
All AS358MTR-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 AS358MTR-G1 meets industry standards.
7.What is the process for return or replacement of AS358MTR-G1?
All AS358MTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AS358MTR-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 AS358MTR-G1 part is unused and in its original packaging.
Return procedure for AS358MTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AS358MTR-G1 Tags
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