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STMicroelectronics TSV994IYDT
- Part No.:
- TSV994IYDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TSV994IYDT.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,395
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Product details
Overview
TSV994IYDT from STMicroelectronics is a quad rail-to-rail input/output operational amplifier optimized for low-voltage, low-power applications. It delivers 20 MHz gain-bandwidth at ≥4 or ≤−3 minimum stable gain, 820 µA typical supply current per channel, 1.5 mV max input offset voltage (A grade), and operates from 2.5 V to 5.5 V. It is used in battery-powered medical instrumentation signal conditioning stages.
For engineers reviewing the TSV994IYDT datasheet, TSV994IYDT pinout, TSV994IYDT application, or TSV994IYDT equivalent, key selection criteria include its A-grade offset voltage specification, stability constraints (gain ≥4 or ≤−3), rail-to-rail I/O swing at low supply, ultra-low 1 pA input bias current, and SO14 packaging with automotive-grade qualification (AEC-Q100).
Technical Context
The TSV994IYDT employs a high-speed, low-power CMOS input stage enabling 1 pA typical input bias current and rail-to-rail common-mode input range (VCC− −0.1 V to VCC+ +0.1 V). Its internal compensation requires minimum closed-loop gain of 4 (non-inverting) or −3 (inverting) for phase margin ≥45° with 100 pF capacitive load.
It features 10 V/μs slew rate, 21 nV/√Hz input voltage noise at 10 kHz, and 0.0014% THD+N at 1 kHz with 4.4 Vpp output into 2 kΩ - confirming suitability for precision active filtering and sensor front-end amplification where dynamic range and DC accuracy coexist under 5.5 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 20 MHz - supports closed-loop bandwidth up to ~5 MHz at gain = 4, enabling anti-aliasing and reconstruction filters in portable data acquisition. |
| Input offset voltage (max) | 1.5 mV - ensures ≤0.03% full-scale error in 5 V-span 12-bit systems without trimming. |
| Supply current per channel | 820 µA typ. - enables four-channel operation below 3.3 mA total, critical for multi-sensor battery nodes. |
| Input bias current | 1 pA typ. - minimizes voltage error across high-impedance sensor sources (e.g., pH electrodes, piezoresistive bridges). |
| Common-mode input range | VCC− −0.1 V to VCC+ +0.1 V - allows direct interfacing to single-supply sensors operating near ground or rail. |
| Output drive capability | ±35 mA - sustains 2 kΩ loads at rail-to-rail swing, eliminating need for external buffers in driving ADC reference dividers. |
| Stability condition | Stable for gain ≥4 or ≤−3 - mandates external gain-setting resistors; not usable as unity-gain buffer without series output resistor. |
Pinout & Package
TSV994IYDT is supplied in SO14 package (14-pin small outline integrated circuit), qualified for automotive temperature range (−40 °C to +125 °C) and moisture sensitivity level 3 per JEDEC J-STD-020-C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input (Channel 1) | Accepts feedback network connection; differential pair input node with 1 pA bias current. |
| 2 | Non-inverting input (Channel 1) | High-impedance sensor interface node; common-mode range extends 0.1 V beyond rails. |
| 3 | Output (Channel 1) | Capable of ±35 mA sink/source; rail-to-rail swing with <150 mV saturation at 600 Ω load. |
| 4 | VCC− (Ground) | Power return reference; decoupling capacitor (10 nF) must be placed adjacent to this pin. |
| 5 | Non-inverting input (Channel 2) | Independent high-Z input for second sensor path; matched offset and bias vs. Channel 1. |
| 6 | Inverting input (Channel 2) | Feedback node for Channel 2; identical AC/DC specs to Pin 1. |
| 7 | Output (Channel 2) | Full rail-to-rail output drive; electrically isolated from other channels in SO14 layout. |
| 8 | Output (Channel 3) | Third independent amplifier output; shares VCC−/VCC+ pins but has dedicated I/O terminals. |
| 9 | Inverting input (Channel 3) | Matched performance to Pins 1 and 6; supports multi-channel synchronous signal conditioning. |
| 10 | Non-inverting input (Channel 3) | Enables three simultaneous sensor interfaces with shared power domain and thermal coupling. |
| 11 | VCC+ | Positive supply (2.5–5.5 V); internal ESD protection ≥5 kV HBM; requires local 10 nF decoupling. |
| 12 | Non-inverting input (Channel 4) | Fourth high-precision input; offset drift of 2 μV/°C enables stable multi-decade temperature operation. |
| 13 | Inverting input (Channel 4) | Configurable for differential or single-ended use; same stability rules apply (gain ≥4 or ≤−3). |
| 14 | Output (Channel 4) | Final channel output; capable of driving 35 mA into 600 Ω while maintaining linearity and low THD+N. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in single-supply 3.3 V or 5 V systems without level-shifting circuitry. |
| 20 MHz gain-bandwidth at low power | Delivers 5 MHz closed-loop bandwidth at gain = 4 while consuming only 820 µA per channel - optimal for portable active filters. |
| 1.5 mV max input offset (A grade) | Guarantees sub-0.03% gain error in 12-bit measurement systems without calibration, reducing BOM cost. |
| 1 pA typical input bias current | Prevents significant voltage drop across >10 MΩ source impedances (e.g., photodiode transimpedance stages). |
| AEC-Q100 qualified (Grade 1) | Validated for automotive cabin electronics including infotainment sensor hubs and ADAS auxiliary signal chains. |
Applications
| Portable ECG Monitor Front-End | Battery-Powered Gas Sensor Signal Chain |
|---|---|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in handheld ECG devices with 3.3 V Li-ion supply. IC Role / Device Role / Timing Role: Quad-channel instrumentation amplifier core: Channels 1–2 form differential input stage; Channels 3–4 provide programmable gain and filter sections. Use Value: 1 pA input bias prevents electrode polarization errors; rail-to-rail output drives 12-bit SAR ADC reference directly; 820 µA/channel enables >24-hour runtime on 500 mAh battery. | Use Scenario: Conditioning analog output from electrochemical CO sensor in wireless air quality badge operating from coin cell. IC Role / Device Role / Timing Role: First-stage transimpedance amplifier (Channel 1), second-stage gain/offset adjust (Channel 2), third-stage low-pass filter (Channel 3), fourth-stage buffer (Channel 4). Use Value: 1.5 mV max offset avoids zero-point calibration; 20 MHz GBP supports 100 Hz cutoff with minimal phase lag; 2.5 V min supply extends usable battery life down to 2.7 V. |
| Automotive Cabin Temperature Array | Industrial Handheld Multimeter Input Stage |
Use Scenario: Simultaneous readout of four NTC thermistors distributed across vehicle cabin zones using single 5 V rail. IC Role / Device Role / Timing Role: Four independent precision voltage followers with gain = 4 configuration to meet stability requirement and reject common-mode noise. Use Value: AEC-Q100 qualification ensures reliability at 125 °C ambient; matched offset drift (2 μV/°C) maintains inter-channel accuracy across temperature gradients. | Use Scenario: High-impedance input buffer and programmable gain stage in 4½-digit handheld DMM with autoranging and auto-zero functions. IC Role / Device Role / Timing Role: Input guard driver (Channel 1), differential front-end (Channels 2–3), auto-zero integrator (Channel 4) - all sharing same die for thermal tracking. Use Value: Ultra-low 1 pA bias current eliminates leakage-induced reading drift on 10 GΩ input ranges; SO14 package allows compact PCB layout with guard trace routing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSV994IDT | Commercial-grade (−40 °C to +125 °C), same SO14 package and electrical specs, but not AEC-Q100 qualified. | Not suitable for automotive ECUs; acceptable for industrial or consumer portable equipment with same temp range. | Select when AEC-Q100 is not required and cost optimization is prioritized over automotive qualification. |
| TSV994AIYDT | Same AEC-Q100 Grade 1 qualification, but 3 mV max input offset (vs. 1.5 mV for TSV994IYDT) and higher ICC (1.1 mA max vs. 0.82 mA typ). | Acceptable for less demanding automotive sensor interfaces where offset budget allows 0.06% FS error at 5 V span. | Choose when tighter offset is unnecessary and broader production lot availability is needed. |
Compared with TSV994IDT, TSV994IYDT adds automotive qualification without sacrificing speed or power; compared with TSV994AIYDT, it provides 2× tighter offset control at identical quiescent current - making it optimal for precision automotive analog front-ends.
Availability
TSV994IYDT is available at Aetrix Electronics and suitable for automotive cabin electronics, portable medical instrumentation, battery-powered environmental sensing, and industrial handheld test equipment requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for TSV994IYDT 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 management ICs, analog components, and MEMS sensors for automotive, industrial, and consumer markets.
The TSV99x family was developed specifically for low-voltage, low-power precision analog signal conditioning in space-constrained, battery-operated, and automotive-qualified systems - emphasizing rail-to-rail operation, ultra-low input bias, and stable high-speed performance.
FAQ
Is TSV994IYDT unity-gain stable?
No. The TSV994IYDT is internally compensated for minimum closed-loop gain of 4 (non-inverting) or −3 (inverting). Using it as a unity-gain buffer requires adding a series resistor (typically 10–100 Ω) between output and load to ensure stability, as confirmed in Section 5.1 of DS4975 Rev 16. Simulation with ST's macromodel is recommended before final layout.
What is the maximum capacitive load the TSV994IYDT can drive without oscillation?
When configured at minimum stable gain (≥4 or ≤−3), the TSV994IYDT remains stable with up to 100 pF capacitive load, as verified in AC performance testing (Table 3–5, f = 100 kHz). Driving larger capacitive loads (e.g., >200 pF) requires isolation via series resistor or feedback capacitor - per Figure 16 and 17 in the datasheet.
Does the exposed pad on DFN packages apply to the SO14 TSV994IYDT?
No. The SO14 package (used for TSV994IYDT) has no exposed thermal pad. That feature applies only to DFN8 and DFN6 variants (e.g., TSV994IQ2T). SO14 relies on lead-frame conduction; its RthJA is 103 °C/W (Table 1), requiring standard PCB copper pour for thermal management above 10 mW per channel.
How does the 1.5 mV max offset voltage impact 16-bit ADC interfacing at 5 V full scale?
At 5 V full scale, 1.5 mV offset introduces ≤0.03% full-scale error - equivalent to <1 LSB in a 16-bit system (5 V / 65536 ≈ 76.3 µV/LSB). This allows direct connection to mid-resolution SAR ADCs without hardware trimming, though system-level auto-zero may still be applied for sub-LSB accuracy in metrology-grade designs.
TSV994IYDT 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:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 20 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 820µA (x4 Channels)
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
TSV994IYDT FAQ
1.How can I place an order for TSV994IYDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSV994IYDT 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 TSV994IYDT reliable?
The price and inventory of TSV994IYDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV994IYDT is usually 5 days.
3.What payment methods are accepted for TSV994IYDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV994IYDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSV994IYDT?
TSV994IYDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSV994IYDT 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 TSV994IYDT?
For technical support, including TSV994IYDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV994IYDT requirements.
6.How does Aetrix verify that TSV994IYDT is sourced from the original manufacturer or authorized distributors?
All TSV994IYDT 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 TSV994IYDT meets industry standards.
7.What is the process for return or replacement of TSV994IYDT?
All TSV994IYDT units undergo pre-shipment inspection (PSI). If there is an issue with TSV994IYDT, 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 TSV994IYDT part is unused and in its original packaging.
Return procedure for TSV994IYDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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