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STMicroelectronics TSV794IYDT
- Part No.:
- TSV794IYDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TSV794IYDT.pdf
- Description:
- SO 14 .15 TO JEDEC MS-012
- Quantity:
- Payment:
- Shipping:
Inventory:3,302
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Product details
Overview
TSV794IYDT from STMicroelectronics is a quad rail-to-rail input/output operational amplifier optimized for high-precision, high-bandwidth signal conditioning in automotive and industrial power management systems. It delivers 50 MHz gain bandwidth, 30 V/µs slew rate, 200 µV max input offset voltage, 1 pA typ. input bias current, and operates from 2.2 V to 5.5 V over –40 °C to +125 °C - enabling accurate low-side/high-side current sensing and photodiode transimpedance amplification.
For engineers reviewing the TSV794IYDT datasheet, TSV794IYDT pinout, TSV794IYDT application, or TSV794IYDT equivalent, this device supports A/D converter input buffering with 22 pF load stability, offers 6.5 nV/√Hz input voltage noise at 10 kHz, and maintains unity-gain stability with rail-to-rail operation across its full supply and temperature range - critical for solar-powered and automotive power management designs.
Technical Context
The TSV794 implements dual-input-pair rail-to-rail input architecture, with transition near VCC+ – 1.4 V; precision performance is optimized in the low-pair region (VCC– – 0.1 V to VCC+ – 2 V), where CMRR exceeds 100 dB. Its 53° phase margin ensures stable unity-gain operation into 22 pF loads.
It features fully specified AC/DC performance at 2.2 V, 3.3 V, and 5 V supplies, with input offset drift ≤ ±5 µV/°C and long-term drift of 750 nV/√month - supporting high-accuracy closed-loop current measurement and sensor signal conditioning without recalibration across temperature and time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 50 MHz - enables stable amplification of signals up to ~35 MHz at unity gain for high-speed current sensing and ADC buffering. |
| Slew Rate | 30 V/µs - supports fast transient response in photodiode transimpedance stages and power supply monitoring circuits. |
| Input Offset Voltage | ±200 µV max - ensures sub-0.1% error in mV-level current-sense voltage amplification without trimming. |
| Input Bias Current | 1 pA typ. - minimizes voltage error in high-impedance photodiode and sensor interfaces. |
| Input Voltage Noise | 6.5 nV/√Hz @ 10 kHz - preserves SNR in precision analog front-ends for battery management and solar MPPT control. |
| Supply Range | 2.2 V to 5.5 V - compatible with Li-ion, 3.3 V microcontrollers, and automotive 5 V domains without level-shifting. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial motor drive applications. |
| Rail-to-Rail I/O | Full swing input and output - maximizes dynamic range in single-supply systems like portable solar chargers and EV battery monitors. |
Pinout & Package
TSV794IYDT is housed in a SO14 (Small Outline 14-pin) package with exposed pad for thermal enhancement. Pin functions are validated per DS13480 Rev 7 (page 4/40).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplified output of channel 1; drives loads up to 60 mA sink/source while maintaining rail-to-rail swing. |
| 2 | IN1− | Inverting input of channel 1; differential pair node with 6.3 pF input capacitance and 1 pA bias current. |
| 3 | IN1+ | Non-inverting input of channel 1; matched to IN1− for <100 nA input offset current over temperature. |
| 4 | VCC+ | Positive supply rail; accepts 2.2–5.5 V; decoupling required within 1 cm for EMI immunity. |
| 5 | IN2+ | Non-inverting input of channel 2; electrically isolated but thermally coupled to other channels for matched drift. |
| 6 | IN2− | Inverting input of channel 2; shares same input stage topology and noise density as IN1±. |
| 7 | OUT2 | Output of channel 2; independent output stage with 25 mV VOL and 40 mV VOH at 125 °C. |
| 8 | OUT3 | Output of channel 3; identical AC/DC specs to OUT1/OUT2; usable for multi-channel sensor conditioning. |
| 9 | IN3− | Inverting input of channel 3; supports unused channel termination via gain or comparator configuration per Section 5.4. |
| 10 | IN3+ | Non-inverting input of channel 3; configured with same common-mode range (VCC− – 0.1 V to VCC+ + 0.1 V). |
| 11 | VCC− | Negative supply rail; connects to system ground or negative bias; exposed pad tied to VCC− for thermal relief. |
| 12 | IN4+ | Non-inverting input of channel 4; enables simultaneous four-channel signal conditioning in compact space-constrained layouts. |
| 13 | IN4− | Inverting input of channel 4; matches input impedance and noise performance of other channels. |
| 14 | OUT4 | Output of channel 4; fully characterized for 22 pF capacitive load stability and 126 dB crosstalk rejection. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable 50 MHz GBW | Enables direct connection to SAR ADC inputs without external compensation, reducing BOM count and layout area. |
| Rail-to-rail input with dual-pair architecture | Supports full-scale signal acquisition from 0 V to VCC across all four channels, eliminating need for level-shifting in single-supply systems. |
| 1 pA typical input bias current | Permits use with >1 GΩ feedback resistors in photodiode transimpedance amplifiers without significant DC error. |
| 6.5 nV/√Hz input voltage noise @ 10 kHz | Maintains >80 dB SNR for 100 kHz bandwidth signals in battery voltage monitoring and shunt-based current sensing. |
| Automotive-grade qualification | Meets AEC-Q100 stress test requirements including 4 kV HBM ESD and extended temperature operation to +125 °C ambient. |
| 22 pF capacitive load drive capability | Allows direct interface to ADC input capacitance and PCB trace capacitance without isolation resistors or ferrite beads. |
Applications
| High-Side Current Sensing | Photodiode Transimpedance Amplifier |
|---|---|
Use Scenario: Monitoring motor phase current in 48 V mild-hybrid automotive inverters using shunt resistors placed between high-side FETs and battery rail. IC Role / Device Role / Timing Role: Quad op-amp channels condition four independent current-sense voltages with matched gain, offset, and temperature drift for vector control accuracy. Use Value: 200 µV max VOS and ±5 µV/°C drift ensure <0.5% total current measurement error across –40 °C to +125 °C without calibration. | Use Scenario: Converting weak photocurrents (<100 nA) from UV flame detectors in industrial burners into robust voltage signals for microcontroller ADC sampling. IC Role / Device Role / Timing Role: Single channel configured as transimpedance amplifier with 10 MΩ feedback resistor; remaining channels buffer reference, filter, and compare outputs. Use Value: 1 pA input bias current prevents >10 mV error in 10 MΩ feedback path; 6.5 nV/√Hz noise preserves detection SNR at 100 Hz modulation frequency. |
| A/D Converter Input Buffer | Solar MPPT Power Management |
Use Scenario: Driving 12-bit SAR ADC inputs in industrial PLC analog input modules handling 4–20 mA loop signals and thermocouple outputs. IC Role / Device Role / Timing Role: One channel buffers conditioned sensor voltage; others handle excitation, reference scaling, and diagnostics - all sharing same supply and thermal environment. Use Value: 22 pF load stability and 30 V/µs slew rate settle 12-bit codes in <500 ns; rail-to-rail output avoids headroom loss in 3.3 V systems. | Use Scenario: Measuring panel voltage and current in photovoltaic microinverters to compute real-time maximum power point tracking (MPPT) algorithms. IC Role / Device Role / Timing Role: Two channels measure VPV and IPV simultaneously; third provides reference voltage; fourth conditions auxiliary temperature sensor. Use Value: 50 MHz GBW supports fast transient response during cloud-edge events; 2.2 V minimum supply enables operation during low-light brownout conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-bandwidth, low-offset op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSZ182IDT | Zero-drift architecture (3 MHz GBW, 0.02 µV/°C drift), lower power (1.1 mA/ch), but 10× lower bandwidth. | Better for DC-critical sensor bridges; unsuitable for >100 kHz current sensing or ADC buffering. | Select when ultra-low drift dominates over speed; avoid when slew rate or bandwidth >5 MHz required. |
| TSB7192IYDT | 36 V supply range, 20 MHz GBW, higher VOS (1.5 mV max), higher noise (11 nV/√Hz), 10× higher supply current. | Targeted at industrial 24 V systems with wide dynamic range; not optimized for low-voltage solar or automotive 5 V domains. | Choose for high-voltage industrial signal chains; reject for battery-powered or 5 V automotive subsystems. |
Compared with TSV794IYDT, TSZ182IDT trades 50 MHz bandwidth and 30 V/µs slew rate for nanovolt-level drift stability, while TSB7192IYDT sacrifices low-voltage operation and noise performance for extended supply range - making TSV794IYDT uniquely suited for precision, high-speed, low-power 2.2–5.5 V applications.
Availability
TSV794IYDT is available at Aetrix Electronics and suitable for automotive power management, solar MPPT controllers, industrial PLC analog input modules, and photodiode-based flame detection systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for TSV794IYDT 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog components for automotive, industrial, and consumer markets.
The TSV79x series belongs to ST's precision high-speed op amp product line, engineered specifically for accurate, low-noise signal conditioning in automotive-grade power management and energy harvesting systems operating from 2.2 V to 5.5 V.
FAQ
What is the maximum capacitive load the TSV794IYDT can drive while maintaining stability?
The TSV794IYDT is fully characterized and stable driving up to 22 pF capacitive load in unity-gain configuration, as verified in DS13480 Rev 7 (Table 6–8). It can typically handle up to 1 nF with appropriate external compensation, but 22 pF represents the guaranteed, uncompensated limit for production designs - critical for direct interfacing with SAR ADC inputs and PCB routing capacitance.
How does the dual-input-pair rail-to-rail architecture affect common-mode rejection?
The dual-pair input stage transitions near VCC+ – 1.4 V; CMRR exceeds 100 dB only in the low-pair region (VCC– – 0.1 V to VCC+ – 2 V). Operation near the transition degrades CMRR to ~70 dB, so designers must constrain common-mode voltage within the high-CMRR range for precision applications - confirmed by Figures 12 and 13 in DS13480.
Can unused op amp channels in the TSV794IYDT be left floating?
No - floating unused channels risk internal oscillation and increased supply current. Per Section 5.4 of DS13480, each unused channel must be configured either as a unity-gain buffer (inputs tied to valid common-mode voltage) or as an open-loop comparator (with ≥100 mV differential input). Leaving pins unconnected violates recommended practice and may compromise adjacent channel performance.
Is the TSV794IYDT qualified for automotive applications?
Yes - the TSV794IYDT is explicitly offered in an automotive-grade version (as noted in the "Features" section), qualified per AEC-Q100 with 4 kV HBM ESD rating, extended –40 °C to +125 °C operating range, and reliability testing including long-term VOS drift characterization. The "IYDT" suffix denotes the SO14 package variant qualified for automotive use.
TSV794IYDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Standard
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 30V/µs
- Gain Bandwidth Product:
- 50 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 5.5mA (x4 Channels)
- Current - Output / Channel:
- 70 mA
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
TSV794IYDT FAQ
1.How can I place an order for TSV794IYDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSV794IYDT 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 TSV794IYDT reliable?
The price and inventory of TSV794IYDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV794IYDT is usually 5 days.
3.What payment methods are accepted for TSV794IYDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV794IYDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSV794IYDT?
TSV794IYDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSV794IYDT 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 TSV794IYDT?
For technical support, including TSV794IYDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV794IYDT requirements.
6.How does Aetrix verify that TSV794IYDT is sourced from the original manufacturer or authorized distributors?
All TSV794IYDT 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 TSV794IYDT meets industry standards.
7.What is the process for return or replacement of TSV794IYDT?
All TSV794IYDT units undergo pre-shipment inspection (PSI). If there is an issue with TSV794IYDT, 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 TSV794IYDT part is unused and in its original packaging.
Return procedure for TSV794IYDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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