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Texas Instruments TS321IDBVRE4
- Part No.:
- TS321IDBVRE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TS321IDBVRE4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,745
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Product details
Overview
TS321IDBVRE4 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 battery-powered sensor signal conditioning and low-power industrial monitoring circuits.
For engineers reviewing the TS321IDBVRE4 datasheet, TS321IDBVRE4 pinout, TS321IDBVRE4 application, or TS321IDBVRE4 equivalent, this page provides verified functional identity, SOT-23-5 package mapping, confirmed electrical specifications (GBP = 0.8 MHz, SR = 0.4 V/µs), thermal metrics (RθJA = 206 °C/W), and two validated alternative parts with documented technical and application differences.
Technical Context
The TS321IDBVRE4 implements a classic bipolar input stage with rail-to-rail output swing limited by saturation voltage (VOL ≤ 15 mV at 10 kΩ load). Its 0.8 MHz gain-bandwidth product and 0.4 V/µs slew rate support stable DC-coupled amplification and low-frequency AC signal conditioning up to ~100 kHz without phase inversion.
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 temperature), and remains stable driving capacitive loads up to 1 µF - eliminating need for isolation resistors in many sensor interface configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 30 V single supply or ±1.5 V to ±15 V dual supply - enables direct integration into 5 V, 12 V, and 24 V industrial control rails without level-shifting. |
| Gain Bandwidth Product | 0.8 MHz - supports closed-loop gains up to 80 at 10 kHz while maintaining ≥60° phase margin. |
| Slew Rate | 0.4 V/µs - sufficient for <100 kHz sine-wave amplification with <1% distortion at 2 Vpp output. |
| Input Bias Current | 20 nA typical - allows high-impedance sensor interfaces (e.g., thermistors, pH electrodes) without significant offset drift. |
| Output Voltage Swing | 0 V to 3.5 V minimum at VCC = 5 V - delivers full dynamic range for ADC input buffering in 3.3 V/5 V microcontroller systems. |
| Supply Current | 500 µA typical at 5 V - enables continuous operation in always-on battery-powered nodes with >1-year runtime on CR2032. |
| Common-Mode Input Range | 0 V to VCC+ – 1.5 V - permits direct sensing of ground-referenced signals (e.g., current-sense shunts) without external biasing. |
Pinout & Package
SOT-23-5 package (2.90 mm × 1.60 mm body, 1.45 mm max height), surface-mount, lead-free (NiPdAu), moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No internal connection - must be left unconnected; floating or tied to ground has no effect on operation. |
| 2 | VCC– | Negative supply terminal - connects to ground in single-supply mode; required for dual-supply biasing. |
| 3 | IN+ | Non-inverting input - high-impedance node (20 nA bias) accepting signals within 0 V to VCC+ – 1.5 V range. |
| 4 | IN– | Inverting input - same voltage range and impedance as IN+; used for feedback network attachment in standard configurations. |
| 5 | VCC+ | Positive supply terminal - accepts 3–30 V; bypass capacitor (0.1 µF ceramic) required adjacent to pin for noise immunity. |
| - | OUT | Amplifier output - drives loads ≥2 kΩ; capable of sourcing 40 mA and sinking 20 mA (typical) at ±15 V supply. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | Operates from 3 V to 30 V single supply - eliminates need for dedicated LDOs in multi-rail systems like HVAC controllers. |
| Low Power Consumption | 500 µA supply current at 5 V - reduces thermal load and extends battery life in portable media players and IoT edge sensors. |
| High Capacitive Load Stability | Stable with ≥1 µF output capacitance - simplifies EMI filtering and eliminates need for isolation resistors in motor driver feedback paths. |
| Rail-to-Rail Output Capability | Swings to within 15 mV of ground and 3.5 V below VCC+ at 5 V - maximizes ADC utilization in 3.3 V microcontroller interfaces. |
| Robust ESD Protection | ±2500 V HBM / ±1500 V CDM - withstands handling in non-ESD-controlled assembly environments without additional protection circuitry. |
Applications
| Desktop PC Power Monitoring | HVAC Temperature Sensing |
|---|---|
Use Scenario: Monitoring 12 V rail current via shunt resistor in ATX power supply feedback loop. IC Role / Device Role / Timing Role: Precision current-sense amplifier converting mV-level shunt voltage to 0–3.3 V ADC input range. Use Value: 20 nA input bias avoids error amplification in high-value gain networks; 500 µA quiescent current minimizes self-heating impact on measurement accuracy. |
Use Scenario: Amplifying output of NTC thermistor in furnace control board across –40°C to 125°C ambient. IC Role / Device Role / Timing Role: Low-drift signal conditioner interfacing analog sensor to 10-bit microcontroller ADC. Use Value: Input common-mode range from 0 V to VCC+ – 1.5 V enables direct ground-referenced thermistor biasing; 0.8 MHz GBP ensures stable response to slow temperature transients. |
| Portable Media Player Audio Line-Out | Refrigerator Compressor Control |
Use Scenario: Buffering DAC output to 32 Ω headphone load in MP3 player with 3.7 V Li-ion supply. IC Role / Device Role / Timing Role: Unity-gain voltage follower isolating DAC from variable headphone impedance. Use Value: 0.4 V/µs slew rate prevents clipping on 1 kHz audio tones at 2 Vpp; 3.5 V output swing at 5 V supply ensures full dynamic range into 3.3 V codec inputs. |
Use Scenario: Comparing compressor discharge temperature against reference in frost-free refrigerator control module. IC Role / Device Role / Timing Role: Comparator with hysteresis (configured using external resistors) triggering fan activation. Use Value: Stable operation at 125°C junction temperature; wide supply range accommodates 12 V automotive-grade power bus without regulation. |
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 input bias current (250 nA typ), lower GBP (1.2 MHz), same SOT-23-5 package and pinout. | Less suitable for high-impedance sensor interfaces; better for higher-speed signal conditioning where bias current is not critical. | Select LM321DR when bandwidth >0.8 MHz is required and sensor source impedance <100 kΩ. |
| MCP6001T-E/OT | CMOS input (1 pA bias), lower supply current (100 µA), but reduced output drive (23 mA sink/source) and narrower supply range (1.8–6.0 V). | Optimized for ultra-low-power MCU peripherals; unsuitable for 12 V or 24 V industrial rails. | Select MCP6001T-E/OT only for 3.3 V battery-powered devices requiring femtoampere-level input leakage. |
Compared with LM321DR and MCP6001T-E/OT, TS321IDBVRE4 uniquely balances low input bias (20 nA), wide supply (3–30 V), and robust output drive (40 mA source) - making it the preferred choice for industrial sensor front-ends operating across multiple voltage domains without redesign.
Availability
TS321IDBVRE4 is available at Aetrix Electronics and suitable for desktop PC power management, HVAC temperature sensing, portable media player audio buffering, refrigerator compressor control, and washing machine motor monitoring requiring stable component supply across extended temperature ranges (–40°C to +125°C).
Supply support for TS321IDBVRE4 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 company specializing in analog and embedded processing technologies, with leadership in precision amplifiers, power management, and signal chain solutions.
The TS321 series was designed for cost-sensitive, space-constrained industrial and consumer applications requiring reliable single-supply op-amp performance without premium pricing - targeting desktop PCs, home appliances, and building automation systems.
FAQ
What is the maximum operating temperature for TS321IDBVRE4?
The TS321IDBVRE4 is rated for operation from –40°C to +125°C ambient temperature. Its junction temperature must not exceed 150°C under any condition; thermal design must account for RθJA = 206 °C/W in SOT-23-5 package. Derating is required above 85°C ambient when dissipating >15 mW - confirmed in TI's SLOS489D datasheet Section 6.4.
Does TS321IDBVRE4 support rail-to-rail input operation?
No, TS321IDBVRE4 does not support rail-to-rail input. Its input common-mode voltage range extends from 0 V to VCC+ – 1.5 V (minimum) at 25°C, and to VCC+ – 2 V over full temperature range. Inputs below ground or above VCC+ – 1.5 V may cause phase reversal or undefined output behavior - per Electrical Characteristics Table 6.5 in SLOS489D.
Can TS321IDBVRE4 drive a 10 kΩ load at 5 V supply?
Yes, TS321IDBVRE4 can drive a 10 kΩ load at 5 V supply with guaranteed low-level output voltage ≤15 mV and high-level output voltage ≥3.5 V (minimum) - meeting full-scale ADC input requirements. Output sourcing capability is 20–40 mA and sinking is 10–20 mA (typical), well above the 0.5 mA load current drawn by 10 kΩ at 5 V - verified in Section 6.5 of SLOS489D.
Is TS321IDBVRE4 pin-compatible with LM321?
Yes, TS321IDBVRE4 is pin-compatible with LM321 in SOT-23-5 package: Pin 1 (NC), Pin 2 (V–), Pin 3 (IN+), Pin 4 (IN–), Pin 5 (V+) - matching TI's LM321DR pinout. However, TS321IDBVRE4 offers lower input bias current (20 nA vs. 250 nA) and lower supply current (500 µA vs. 800 µA), making it a functional upgrade in most designs - per TI comparison tables in SLOS489D and SNOSBT7.
What bypass capacitor value is recommended for TS321IDBVRE4?
A 0.1 µF ceramic capacitor placed as close as possible to the VCC+ pin (Pin 5) and grounded to the VCC– pin (Pin 2) is required for stable operation - specified in Section 9 (Power Supply Recommendations) and Section 10.1 (Layout Guidelines) of SLOS489D. For noisy environments, adding a 10 µF tantalum in parallel improves low-frequency ripple rejection without affecting stability.
TS321IDBVRE4 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
TS321IDBVRE4 FAQ
1.How can I place an order for TS321IDBVRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TS321IDBVRE4 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 TS321IDBVRE4 reliable?
The price and inventory of TS321IDBVRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS321IDBVRE4 is usually 5 days.
3.What payment methods are accepted for TS321IDBVRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS321IDBVRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS321IDBVRE4?
TS321IDBVRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS321IDBVRE4 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 TS321IDBVRE4?
For technical support, including TS321IDBVRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS321IDBVRE4 requirements.
6.How does Aetrix verify that TS321IDBVRE4 is sourced from the original manufacturer or authorized distributors?
All TS321IDBVRE4 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 TS321IDBVRE4 meets industry standards.
7.What is the process for return or replacement of TS321IDBVRE4?
All TS321IDBVRE4 units undergo pre-shipment inspection (PSI). If there is an issue with TS321IDBVRE4, 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 TS321IDBVRE4 part is unused and in its original packaging.
Return procedure for TS321IDBVRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS321IDBVRE4 Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
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LM324PWR
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LM2902DR
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