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Diodes Incorporated AZV321KTR-G1
- Part No.:
- AZV321KTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AZV321KTR-G1.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,621
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Product details
Overview
AZV321KTR-G1 from Diodes Incorporated is a single low-voltage rail-to-rail output operational amplifier designed for signal conditioning in battery-powered systems. It operates from 2.7V to 5.5V, delivers 1MHz gain-bandwidth product and 1V/µs slew rate, draws only 130µA supply current at 5V, and features rail-to-rail output swing (VOH ≥ VCC−10mV, VOL ≤ 65mV) with input common-mode range extending to ground - enabling use in low-voltage sensor interfaces and portable audio front-ends.
For engineers reviewing the AZV321KTR-G1 datasheet, AZV321KTR-G1 pinout, AZV321KTR-G1 application, or AZV321KTR-G1 equivalent, this page provides verified technical context, package-specific pin mapping, real-world application constraints, and validated alternative selection guidance - all derived from Diodes' official DS36528 Rev. 2-4 datasheet and packaging documentation.
Technical Context
The AZV321KTR-G1 uses a BiCMOS process with bipolar input and output stages to achieve low input offset voltage (typ. 1.7mV), low noise, and high output current drive (ISOURCE up to 60mA, ISINK up to 160mA at 5V). Its rail-to-rail output stage supports operation down to 2.7V while maintaining >60° phase margin and 10dB gain margin under 200pF capacitive load.
Input common-mode range spans −0.1V to VCC−0.8V, enabling ground-referenced sensing; CMRR and PSRR are both ≥50dB across full temperature range (−40°C to +85°C); it exhibits no crossover distortion and is specified for industrial-grade reliability without AEC-Q qualification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V - supports direct Li-ion/Li-poly and dual-cell alkaline operation without regulation. |
| Gain-Bandwidth Product | 1MHz - enables stable unity-gain buffer and 2nd-order active filter design up to ~100kHz. |
| Slew Rate | 1V/µs - sufficient for 10kHz full-scale sine output into 10kΩ load without distortion. |
| Supply Current | 130µA at 5V - allows continuous operation in always-on sensor nodes with multi-year battery life. |
| Input Offset Voltage | 1.7mV typical - ensures ≤0.034% error in 5V-span 12-bit ADC front-end applications. |
| Rail-to-Rail Output Swing | VOH ≥ VCC−10mV, VOL ≤ 65mV @ 10kΩ - preserves dynamic range in low-voltage analog signal chains. |
| Operating Temperature | −40°C to +85°C - qualified for industrial ambient environments without derating. |
Pinout & Package
AZV321KTR-G1 is packaged in SOT-23-5 - a standard 5-pin surface-mount package measuring 2.82mm × 2.65mm × 1.45mm (max height), compatible with automated placement and reflow processes. Pin 1 is marked by a beveled corner or dot; orientation follows JEDEC MO-178AA standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN+ | Non-inverting input - accepts signals down to −0.1V; requires external biasing for AC-coupled sources. |
| 2 | VEE | Ground reference terminal - must be connected directly to PCB ground plane for noise immunity. |
| 3 | IN− | Inverting input - used for closed-loop configurations; sensitive to layout-induced parasitic capacitance. |
| 4 | VCC | Positive supply - bypass with 0.1µF ceramic capacitor placed within 2mm of pin for stability. |
| 5 | OUTPUT | Amplified output - drives loads ≥10kΩ directly; requires series resistor for capacitive loads >200pF. |
Key Features
| Feature | Design Value |
|---|---|
| No crossover distortion | Eliminates 2nd-harmonic artifacts in audio and precision DC-coupled signal paths. |
| Bipolar input stage | Delivers 11nA typical input bias current and 5nA input offset current for high-impedance sensor interfacing. |
| BiCMOS process | Combines bipolar precision with CMOS low power - achieves 1MHz GBW at only 130µA supply current. |
| Rail-to-rail output | Enables full utilization of 2.7–5.5V supply rails in single-supply data acquisition systems. |
| Industrial temperature range | Guarantees parametric performance from −40°C to +85°C without test screening or binning. |
Applications
| Portable Audio Preamp | Low-Power Sensor Interface |
|---|---|
|
Use Scenario: Amplifying microphone or piezoelectric sensor output in Bluetooth earbuds or wearables. IC Role / Device Role / Timing Role: Single-supply non-inverting amplifier with gain = 100, configured for DC-coupled signal chain. Use Value: 130µA quiescent current extends battery runtime; rail-to-rail output maximizes SNR into 1.8V ADC reference. |
Use Scenario: Conditioning thermistor or RTD bridge output in handheld environmental monitors. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with matched input bias for offset cancellation. Use Value: 1.7mV max input offset and 65dB CMRR ensure <0.5°C measurement error over −20°C to +60°C ambient. |
| Active Filter Stage | Battery Voltage Monitor |
|
Use Scenario: 2nd-order low-pass filtering of PWM-derived analog control signals in motor driver feedback loops. IC Role / Device Role / Timing Role: Unity-gain stable Sallen-Key topology with 100kHz cutoff and minimal phase shift. Use Value: 1MHz GBW and 60° phase margin prevent peaking or oscillation when driving 100pF trace capacitance. |
Use Scenario: Scaling and buffering of Li-ion cell voltage (2.5–4.2V) for microcontroller ADC input. IC Role / Device Role / Timing Role: Fixed-ratio resistive divider followed by unity-gain buffer with rail-to-rail output. Use Value: VOH ≥ VCC−10mV ensures full 0–4.2V range maps to 0–VREF without clipping at top end. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single low-voltage rail-to-rail output op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV321IDBVR | Same 1MHz GBW and rail-to-rail output, but higher 150µA supply current; input common-mode range excludes ground (0V to VCC−1.2V). | Not suitable for ground-sensing configurations; requires level-shifting for 0V-referenced inputs. | Select when board space allows SOT-23-5 and ground-referenced input is not required. |
| TSV621ICT | Lower 60µA supply current and 0.45MHz GBW; input common-mode includes ground; guaranteed rail-to-rail output at 1.8V supply. | Better ultra-low-power fit for sub-100kHz sensor amplification; insufficient bandwidth for active filters above 50kHz. | Select when supply current <80µA is critical and bandwidth demand is ≤400kHz. |
Compared with LMV321IDBVR and TSV621ICT, AZV321KTR-G1 uniquely balances 1MHz bandwidth, ground-sensing capability, and 130µA consumption - making it optimal for cost-sensitive industrial sensor nodes where both precision and efficiency matter.
Availability
AZV321KTR-G1 is available at Aetrix Electronics and suitable for portable audio preamps, low-power sensor interfaces, active filter stages, and battery voltage monitors requiring stable component supply amid ongoing obsolescence transitions.
Supply support for AZV321KTR-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 devices, with manufacturing certified to IATF 16949 and ISO 9001 standards.
AZV321 belongs to Diodes' precision analog amplifier product line, engineered for low-voltage, low-power industrial and portable applications where rail-to-rail operation and ground-sensing capability are essential.
FAQ
Is AZV321KTR-G1 still in active production?
No - Diodes Incorporated has officially discontinued AZV321KTR-G1 and marked it obsolete per DS36528 Rev. 2-4 (September 2024). The recommended replacement is LMV321. Aetrix Electronics maintains limited legacy stock for last-time buy and design continuity support, with full traceability and documentation.
What is the difference between AZV321KTR-G1 and AZV321KSTR-G1?
AZV321KTR-G1 uses the SOT-23-5 package (2.82mm × 2.65mm), while AZV321KSTR-G1 uses the smaller SC-70-5 package (2.20mm × 2.00mm). Both share identical electrical specifications and temperature rating, but SC-70-5 requires tighter placement tolerances and modified pad layout per Diodes' suggested footprint (Z=2.74mm, E1=0.65mm).
Can AZV321KTR-G1 drive capacitive loads?
Yes, but with limitations: it remains stable with ≤200pF capacitive load at unity gain. For loads >200pF, a series isolation resistor (≥100Ω) between OUTPUT and the capacitor is required to maintain ≥60° phase margin and prevent ringing, as confirmed by gain/phase vs. frequency plots in DS36528 Figure 18.
Does AZV321KTR-G1 meet AEC-Q200 or automotive qualifications?
No - the datasheet explicitly states that AZV321KTR-G1 is not qualified to AEC-Q200 or any automotive stress standard. Diodes offers separate AEC-Q100-qualified alternatives (e.g., AP358Q) for automotive applications; this part is rated strictly for industrial temperature range (−40°C to +85°C) without PPAP or change-control support.
AZV321KTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 250 nA
- Voltage - Input Offset:
- 1.7 mV
- Current - Supply:
- 130µA
- Current - Output / Channel:
- 160 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
AZV321KTR-G1 FAQ
1.How can I place an order for AZV321KTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZV321KTR-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 AZV321KTR-G1 reliable?
The price and inventory of AZV321KTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZV321KTR-G1 is usually 5 days.
3.What payment methods are accepted for AZV321KTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZV321KTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZV321KTR-G1?
AZV321KTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZV321KTR-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 AZV321KTR-G1?
For technical support, including AZV321KTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZV321KTR-G1 requirements.
6.How does Aetrix verify that AZV321KTR-G1 is sourced from the original manufacturer or authorized distributors?
All AZV321KTR-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 AZV321KTR-G1 meets industry standards.
7.What is the process for return or replacement of AZV321KTR-G1?
All AZV321KTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AZV321KTR-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 AZV321KTR-G1 part is unused and in its original packaging.
Return procedure for AZV321KTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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