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Texas Instruments TS321IDBVRG4
- Part No.:
- TS321IDBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TS321IDBVRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,361
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Product details
Overview
TS321IDBVRG4 from Texas Instruments is a bipolar single operational amplifier optimized for cost-sensitive, space-constrained applications. It operates from 3 V to 30 V single supply or ±1.5 V to ±15 V dual supply, delivers 3.5 V output swing (min) at 5 V supply, draws only 500 µA typical supply current, and features 20 nA typical input bias current - enabling use in portable media players and HVAC sensor signal conditioning.
For engineers reviewing the TS321IDBVRG4 datasheet, TS321IDBVRG4 pinout, TS321IDBVRG4 application, or TS321IDBVRG4 equivalent, this page provides verified package mapping (SOT-23-5), confirmed electrical specs (GBW = 0.8 MHz, SR = 0.4 V/µs, CMRR = 65–85 dB), thermal data (RθJA = 206 °C/W), and two validated alternative parts with documented functional and application differences.
Technical Context
The TS321IDBVRG4 implements a classic bipolar input stage with rail-to-rail output capability limited to within 1.5 V of VCC+ and ground. Its internal compensation ensures unity-gain stability even with ≥1 µF capacitive loads, supporting robust sensor interface and filtering circuits without external compensation.
It supports true single-supply operation down to 3 V with input common-mode range extending from ground to VCC+ – 1.5 V (2 V over full temperature), and tolerates input voltages up to 32 V without damage - enabling direct connection to higher-voltage sensors or legacy analog buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 3 V to 30 V single supply or ±1.5 V to ±15 V dual supply - supports battery-powered and industrial line-powered systems without level-shifting. |
| Gain Bandwidth | 0.8 MHz - enables stable closed-loop gain up to ~80 at 10 kHz for anti-aliasing or sensor amplification. |
| Slew Rate | 0.4 V/µs - sufficient for audio-band signals (<20 kHz) and slow control loops; avoids distortion in DC-coupled sensor paths. |
| Input Bias Current | 20 nA typical - minimizes voltage error across high-impedance source networks (e.g., thermistors, pH electrodes). |
| Output Swing | 0 V to 3.5 V min at VCC = 5 V - delivers >70% rail-to-rail swing for improved dynamic range in low-voltage ADC interfacing. |
| CMRR | 65–85 dB - rejects common-mode noise from shared power rails or EMI-coupled sensor cables in noisy environments. |
| Supply Current | 500 µA typical at 5 V - enables multi-channel monitoring in always-on subsystems with sub-1 mA total quiescent budget. |
Pinout & Package
SOT-23-5 package (2.90 mm × 1.60 mm body, 1.45 mm max height); compact footprint ideal for space-limited PCBs in consumer and appliance designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No internal connection - must be left unconnected; not usable as feedback node or bias point. |
| 2 | VCC– | Negative supply or ground reference - establishes lower rail; requires local 0.1 µF ceramic bypass to GND. |
| 3 | IN+ | Non-inverting input - high-impedance node (20 nA bias); connects to sensor reference or filtered signal source. |
| 4 | IN– | Inverting input - accepts feedback network or signal path; phase inversion defines amplifier configuration (inverting/non-inverting). |
| 5 | VCC+ | Positive supply - accepts 3–30 V; must be decoupled near pin with 0.1 µF capacitor to minimize PSRR degradation. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | Operates from 3 V to 30 V single supply - eliminates need for dedicated LDOs in mixed-voltage systems (e.g., 3.3 V MCU + 24 V sensor bus). |
| Capacitive Load Stability | Stable with ≥1 µF output capacitance - allows direct driving of RC filters or long traces without oscillation in motor control feedback paths. |
| High Input Voltage Tolerance | Inputs withstand up to 32 V regardless of supply - enables safe interfacing with 24 V industrial sensors without external clamping diodes. |
| Low Power Consumption | 500 µA typical ICC at 5 V - supports battery life extension in portable media players and smart home sensors. |
| Extended Temperature Range | –40°C to +125°C operation - qualified for under-hood automotive auxiliary modules and refrigeration compressor controls. |
Applications
| Desktop PC Power Monitoring | HVAC Temperature Sensing |
|---|---|
Use Scenario: Amplifying millivolt-level signals from thermistor or RTD bridges in motherboard VRM telemetry circuits. IC Role / Device Role / Timing Role: Precision DC-coupled signal conditioner converting resistance changes into clean voltage for ADC sampling. Use Value: 20 nA input bias current prevents loading errors in high-Z bridge arms; 0.8 MHz GBW supports fast transient response during CPU load spikes. |
Use Scenario: Conditioning analog outputs from NTC thermistors in furnace control boards exposed to ambient temperatures from –20°C to 85°C. IC Role / Device Role / Timing Role: Low-drift, rail-compatible amplifier buffering sensor voltage before microcontroller ADC input. Use Value: Input common-mode range to VCC+ – 1.5 V allows direct 5 V single-supply operation with 0–5 V sensor span; 125°C rating ensures reliability near heat exchangers. |
| Portable Media Player Audio Line-Out | Refrigerator Defrost Cycle Control |
Use Scenario: Driving headphone amplifiers or line-level outputs in battery-powered MP3 players using 3.3 V or 5 V rails. IC Role / Device Role / Timing Role: Low-noise, low-quiescent-current buffer isolating DAC output from variable headphone impedance. Use Value: 500 µA supply current extends playback time; 3.5 V output swing at 5 V supply maximizes SNR into 10 kΩ loads. |
Use Scenario: Comparing defrost heater temperature against threshold in frost-free refrigerator control logic. IC Role / Device Role / Timing Role: Comparator replacement in hysteresis-based thermostat circuits requiring rail-compatible inputs and clean switching. Use Value: Input tolerance to 32 V permits direct connection to 24 V heater sense lines; 0.4 V/µs slew rate ensures jitter-free transition at 1 Hz switching rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM321DR | Higher 1.2 MHz GBW and 0.6 V/µs slew rate; 700 µA typical ICC; same SOT-23-5 package. | Better suited for higher-frequency signal chains (e.g., active filters above 100 kHz); less optimal for ultra-low-power battery use. | Select LM321DR when bandwidth or speed outweighs quiescent current constraints. |
| TLV2461CDBVR | Rail-to-rail input/output; 6.4 MHz GBW; 550 µA ICC; CMOS input (1 pA bias); SOT-23-5. | Enables true 0–5 V signal handling and ultra-high-impedance sources (e.g., photodiodes); not bipolar-tolerant for >32 V inputs. | Choose TLV2461CDBVR for precision RRO interfaces where input voltage stays within supply rails and bias current <1 pA is critical. |
Compared with LM321DR and TLV2461CDBVR, TS321IDBVRG4 offers the lowest supply current (500 µA) and highest input overvoltage tolerance (32 V), making it uniquely suitable for cost-sensitive, low-power industrial sensor nodes where robustness and efficiency are prioritized over bandwidth or rail-to-rail input.
Availability
TS321IDBVRG4 is available at Aetrix Electronics and suitable for desktop PC power monitoring, HVAC temperature sensing, portable media player audio line-out, and refrigerator defrost cycle control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TS321IDBVRG4 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
Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions, with over 90 years of innovation in precision analog design and manufacturing excellence.
The TS321 product line targets cost-sensitive, space-constrained applications in consumer electronics and white goods - emphasizing low quiescent current, wide supply flexibility, and rugged input tolerance without complex support circuitry.
FAQ
What is the maximum operating temperature for TS321IDBVRG4?
The TS321IDBVRG4 is rated for operation from –40°C to +125°C ambient temperature. This extended range is validated per TI's thermal characterization (RθJA = 206 °C/W) and supports deployment in demanding environments such as HVAC control boards near heat exchangers or under-hood automotive auxiliary modules. The TS321IDBVRG4 maintains specified electrical performance across this full range.
Does TS321IDBVRG4 support rail-to-rail input operation?
No, TS321IDBVRG4 does not support rail-to-rail input. Its input common-mode voltage range extends from ground to VCC+ – 1.5 V (2 V over full temperature). Inputs may tolerate up to 32 V regardless of supply, but correct phase output requires at least one input to remain within the valid common-mode window. For true rail-to-rail input, consider alternatives like TLV2461CDBVR.
Can TS321IDBVRG4 drive capacitive loads without oscillation?
Yes, TS321IDBVRG4 is internally compensated for stability with capacitive loads ≥1 µF, as confirmed in TI's SLVA381 correlation analysis. This allows direct connection to RC anti-aliasing filters, long PCB traces, or piezoelectric sensor outputs without external compensation components - a key advantage over many general-purpose op amps requiring isolation resistors.
What is the function of Pin 1 on TS321IDBVRG4?
Pin 1 of TS321IDBVRG4 is labeled NC (No Connection) and has no internal connection. It must be left unconnected on the PCB - neither tied to ground, supply, nor used as a test point. This pin serves only mechanical alignment and package standardization; routing or loading Pin 1 risks unintended coupling or assembly defects.
Is TS321IDBVRG4 pin-compatible with other SOT-23-5 op amps?
TS321IDBVRG4 uses the standard SOT-23-5 pinout (VCC–, IN+, IN–, VCC+, OUT), matching industry conventions for single op amps in this package. However, pin compatibility alone does not guarantee functional equivalence - e.g., LM321DR shares the same pinout but differs in GBW and supply current. Always verify electrical specifications and layout requirements before substitution.
TS321IDBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.4V/µs
- Gain Bandwidth Product:
- 800 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 nA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 600µA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TS321IDBVRG4 FAQ
1.How can I place an order for TS321IDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TS321IDBVRG4 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 TS321IDBVRG4 reliable?
The price and inventory of TS321IDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS321IDBVRG4 is usually 5 days.
3.What payment methods are accepted for TS321IDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS321IDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS321IDBVRG4?
TS321IDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS321IDBVRG4 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 TS321IDBVRG4?
For technical support, including TS321IDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS321IDBVRG4 requirements.
6.How does Aetrix verify that TS321IDBVRG4 is sourced from the original manufacturer or authorized distributors?
All TS321IDBVRG4 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 TS321IDBVRG4 meets industry standards.
7.What is the process for return or replacement of TS321IDBVRG4?
All TS321IDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TS321IDBVRG4, 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 TS321IDBVRG4 part is unused and in its original packaging.
Return procedure for TS321IDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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