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STMicroelectronics TSV623AIST
- Part No.:
- TSV623AIST
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TSV623AIST.pdf
- Description:
- IC CMOS 2 CIRCUIT 10MINISO
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
TSV623AIST from STMicroelectronics is a dual rail-to-rail input/output CMOS operational amplifier in MiniSO10 package, delivering 420 kHz gain bandwidth at 29 µA supply current (5 V), 800 µV max input offset voltage (A-grade), and 5 nA shutdown current-designed for precision signal conditioning in ultra-low-power battery-powered medical sensors and portable instrumentation.
For engineers reviewing the TSV623AIST datasheet, TSV623AIST pinout, TSV623AIST application, or TSV623AIST equivalent, key selection criteria include its guaranteed 420 kHz GBP at 5 V, ±0.1 V rail-to-rail input range, 35 mV output swing from rails (10 kΩ load), and dual independent shutdown pins enabling selective channel power gating in multi-sensor front-ends.
Technical Context
The TSV623AIST integrates two independent amplifiers with complementary PMOS/NMOS input stages enabling true rail-to-rail input operation from (VCC−) −0.1 V to (VCC+) +0.1 V and rail-to-rail output swing within 35 mV of either supply rail under 10 kΩ load. Its internal current-starved architecture achieves tight GBP (350–420 kHz min/typ) and slew rate (0.12–0.19 V/µs) dispersion across voltage (1.5–5.5 V) and temperature (−40 to +125 °C) ranges.
Each amplifier features dedicated SHDN1 and SHDN2 pins that force output into high-impedance state when pulled to VCC−, reducing total quiescent current to 5 nA typ. The device is unity-gain stable driving up to 100 pF capacitive loads without external compensation and includes EMI hardening for robust operation in noisy portable environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.5–5.5 V - supports single-cell Li-ion (3.0–4.2 V), coin cell (1.5 V), and 3.3/5 V logic rails without level shifting |
| Gain Bandwidth Product | 420 kHz typ at 5 V - enables stable DC-coupled sensor amplification up to ~40 kHz with ≥10 dB phase margin |
| Input Offset Voltage | 0.8 mV typ, 2.2 mV max (−40 to +125 °C) - ensures <10 µV drift over full temp range for precision bridge sensing |
| Supply Current per Amp | 29 µA typ at 5 V - allows continuous operation for >1 year on a 220 mAh coin cell (dual-amp active) |
| Shutdown Current | 5 nA typ per amp - reduces system standby power to sub-nW levels when channels are idle |
| Input Bias Current | 1 pA typ - preserves high-impedance source integrity (e.g., pH electrodes, piezoelectric sensors) |
| EMI Rejection Ratio | 92 dB at 1.8 GHz - suppresses cellular band interference in wearable ECG/PPG front-ends |
Pinout & Package
TSV623AIST uses the MiniSO10 package (3.0 × 4.9 mm, 0.5 mm pitch), optimized for space-constrained portable PCBs with exposed pad thermal performance (RthJA = 113 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SHDN1) | Channel 1 shutdown control | Active-low logic input; pull to VCC− to disable Amp1 output (Hi-Z), pull to VCC+ to enable |
| 2 (IN1−) | Amp1 inverting input | Differential node for transimpedance or inverting configurations; 1 pA bias current minimizes leakage error |
| 3 (IN1+) | Amp1 non-inverting input | High-impedance sensor interface point; rail-to-rail common-mode range supports direct thermistor/RTD connection |
| 4 (OUT1) | Amp1 output | Rail-to-rail capable (35 mV from rails); drives 10 kΩ loads directly; stable with ≤100 pF capacitive loads |
| 5 (VCC−) | Negative supply rail | Ground reference for single-supply operation; also serves as logic low for SHDN pins |
| 6 (VCC+) | Positive supply rail | 1.5–5.5 V input; decoupling capacitor required within 2 mm for noise immunity |
| 7 (OUT2) | Amp2 output | Independent rail-to-rail output; identical AC/DC specs to OUT1; enables dual-channel synchronous sampling |
| 8 (IN2+) | Amp2 non-inverting input | Second high-Z sensor node; matched offset/bias to IN1± enables common-mode rejection in differential pairs |
| 9 (IN2−) | Amp2 inverting input | Paired with IN2+ for instrumentation amp configurations; 2 µV/°C offset drift ensures stable DC gain over temperature |
| 10 (SHDN2) | Channel 2 shutdown control | Independent active-low control for Amp2; enables asymmetric power management (e.g., keep Amp1 active for wake-up monitoring) |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Extends common-mode range to (VCC−) −0.1 V / (VCC+) +0.1 V - eliminates level-shifting for 0–VCC sensor outputs like potentiometers or resistive dividers |
| Ultra-low shutdown current | 5 nA typ per amplifier - enables micro-power duty-cycled architectures where amplifiers sleep between ADC conversions |
| EMI-hardened architecture | 92 dB rejection at 1.8 GHz - prevents RF rectification artifacts in cellular-connected wearables without external filtering |
| Guaranteed unity-gain stability | Stable with 100 pF capacitive loads - simplifies sensor cable drive and eliminates need for output isolation resistors in most layouts |
| Tight parameter distribution | GBP min = 350 kHz, SR min = 0.12 V/µs - ensures consistent loop response across production batches for certified medical designs |
Applications
| Portable ECG Monitor | Wireless Blood Glucose Sensor |
|---|---|
|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in a Bluetooth LE-enabled patch. IC Role / Device Role / Timing Role: Dual-channel front-end amplifier: Amp1 conditions lead-I signal, Amp2 handles right-leg drive feedback; independent SHDN pins enable dynamic channel gating during RF transmission. Use Value: 1 pA input bias prevents electrode polarization drift; 420 kHz GBP supports 150 Hz ECG bandwidth with >60 dB SNR; 5 nA shutdown extends battery life to 14 days on CR2032. |
Use Scenario: Interfacing electrochemical glucose test strips requiring precise current-to-voltage conversion and reference electrode buffering. IC Role / Device Role / Timing Role: Transimpedance amplifier (Amp1) + reference buffer (Amp2); rail-to-rail inputs accept 0–400 mV strip output; shutdown disables Amp2 when not measuring. Use Value: 0.8 mV offset ensures <1 mg/dL glucose error; 1.5–5.5 V supply range matches AAA battery decay profile; EMI hardening rejects 2.4 GHz BLE noise during wireless upload. |
| Low-Power Industrial Temperature Node | Handheld Gas Detector Signal Chain |
|
Use Scenario: Conditioning PT100/RTD bridge outputs in battery-operated field instruments with 10-year deployment requirements. IC Role / Device Role / Timing Role: Precision instrumentation amplifier core (dual op-amps in 3-op-amp topology); SHDN1/SHDN2 synchronized to MCU wake cycles for periodic measurement bursts. Use Value: 2.2 mV max offset over −40 to +125 °C ensures <0.3 °C absolute accuracy; 29 µA active current enables 10-year life on 2.4 Ah Li-SOCl₂ cell at 1-sample/hour. |
Use Scenario: Amplifying nanoamp-level current from electrochemical gas sensors (CO, H₂S) in intrinsically safe handheld analyzers. IC Role / Device Role / Timing Role: Ultra-low-input-bias transimpedance stage (Amp1) + sensor bias voltage generator (Amp2 as unity-gain buffer). Use Value: 1 pA bias current prevents sensor polarization errors; rail-to-rail output drives ADC reference directly; shutdown cuts leakage during sensor warm-up (60 s intervals). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSV623IST | Non-A grade: 1 mV max Vio (vs. 0.8 mV typ/2.2 mV max for TSV623AIST); same GBP, shutdown, and package | Acceptable for cost-sensitive consumer wearables where <5 µV offset drift is tolerable | Select TSV623IST only if system-level calibration compensates for higher initial offset and drift. |
| MCP6022-E/SN | Higher supply current (100 µA vs. 29 µA); wider VCC range (2.7–6.0 V); no shutdown pins; SO8 package | Suitable for mains-powered industrial controllers needing higher drive strength but lacking battery constraints | Choose MCP6022-E/SN only when 420 kHz GBP is insufficient and 100 µA quiescent current is acceptable. |
Compared with TSV623IST, the TSV623AIST delivers tighter offset specs critical for uncalibrated medical sensors; versus MCP6022-E/SN, it provides 69% lower active current and integrated shutdown-enabling battery life extension and dynamic power management impossible with the Microchip part.
Availability
TSV623AIST is available at Aetrix Electronics and suitable for portable medical devices, battery-powered industrial sensors, and wireless IoT endpoints requiring stable component supply with guaranteed long-term manufacturability and automotive-grade temperature support (−40 to +125 °C).
Supply support for TSV623AIST 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 analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
The TSV62x series belongs to ST's precision low-power op-amp product line, engineered specifically for energy-constrained applications demanding rail-to-rail performance, nanowatt shutdown, and robust EMI immunity in portable and medical electronics.
FAQ
What is the minimum supply voltage for reliable operation of TSV623AIST?
The TSV623AIST operates reliably down to 1.5 V, with all key parameters-including gain bandwidth (275 kHz min), input offset voltage (1 mV max), and rail-to-rail input range-fully specified and guaranteed at this voltage. Below 1.5 V, functionality is not assured per datasheet limits, and output swing degrades beyond 35 mV from rails.
Can TSV623AIST drive a 100 kΩ load while maintaining rail-to-rail output swing?
Yes-the TSV623AIST maintains rail-to-rail output capability (within 35 mV of VCC+/VCC−) driving loads ≥10 kΩ; at 100 kΩ, output swing improves further (<20 mV from rails) due to reduced I×R drop. However, slew rate decreases slightly (0.11 V/µs at 100 kΩ vs. 0.12 V/µs at 10 kΩ), which remains sufficient for DC and low-frequency sensor signals.
How does the shutdown function affect output impedance and leakage?
When SHDN1 or SHDN2 is pulled low, the corresponding amplifier output enters high-impedance state with leakage ≤1 nA (125 °C) and output capacitance dominated by package parasitics (~2 pF). This allows safe multiplexing of multiple TSV623AIST outputs onto a shared ADC input without crosstalk or loading errors.
Is external compensation required for unity-gain stable operation with capacitive loads?
No external compensation is needed for capacitive loads ≤100 pF-the TSV623AIST is internally compensated for unity-gain stability under these conditions. For loads >100 pF, a series resistor (10–100 Ω, per Figure 22 in datasheet) between output and load restores phase margin; layout decoupling (10 nF near VCC pins) remains mandatory regardless of load type.
TSV623AIST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.14V/µs
- Gain Bandwidth Product:
- 420 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 29µA
- Current - Output / Channel:
- 74 mA
- Voltage - Supply Span (Min):
- 1.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MiniSO
TSV623AIST FAQ
1.How can I place an order for TSV623AIST through Aetrix?
Please submit a Request for Quotation (RFQ) for TSV623AIST 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 TSV623AIST reliable?
The price and inventory of TSV623AIST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV623AIST is usually 5 days.
3.What payment methods are accepted for TSV623AIST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV623AIST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSV623AIST?
TSV623AIST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSV623AIST 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 TSV623AIST?
For technical support, including TSV623AIST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV623AIST requirements.
6.How does Aetrix verify that TSV623AIST is sourced from the original manufacturer or authorized distributors?
All TSV623AIST 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 TSV623AIST meets industry standards.
7.What is the process for return or replacement of TSV623AIST?
All TSV623AIST units undergo pre-shipment inspection (PSI). If there is an issue with TSV623AIST, 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 TSV623AIST part is unused and in its original packaging.
Return procedure for TSV623AIST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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