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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

STMicroelectronics TSX564IQ4T

Name: TSX564IQ4T
Brand: STMicroelectronics
SKU: TSX564IQ4T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSX564IQ4T

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 16-UFQFN

Datasheet:: TSX564IQ4T.pdf

Description:: IC CMOS 4 CIRCUIT 16QFN

Quantity:: RFQ Add To RFQ list

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Inventory:11,832

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Product details

Overview

TSX564IQ4T from STMicroelectronics is a quad-channel, rail-to-rail input micropower CMOS operational amplifier optimized for high-impedance sensor interfaces and automotive signal conditioning. It delivers 900 kHz gain bandwidth, 250 µA supply current per channel at 16 V, 600 µV max offset voltage (A-grade), 1 pA typical input bias current, and operates across –40 °C to +125 °C.

For engineers reviewing the TSX564IQ4T datasheet, TSX564IQ4T pinout, TSX564IQ4T application, or TSX564IQ4T equivalent, this device is selected for precision, low-power industrial sensing, automotive ECUs requiring AEC-Q100 compliance, and space-constrained PCBs needing QFN16 3 mm × 3 mm packaging with ESD robustness up to 4 kV HBM.

Technical Context

The TSX564IQ4T integrates four independent amplifiers on a single die using ST's 16 V CMOS process, enabling rail-to-rail input operation from (V_CC–) –0.1 V to (V_CC+) +0.1 V - with optimal performance in the PMOS-pair region (up to V_CC+ –1.5 V). Its dual complementary input stage prevents phase reversal under overdrive conditions.

It features a stable 55° phase margin into 100 pF capacitive loads, unity-gain stable operation, and maintains 750–900 kHz GBP across 3–16 V supply range. Input offset drift is specified at 2–12 µV/°C over –40 to +125 °C, supporting accurate DC-coupled signal chains in harsh environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	3 V to 16 V - supports direct interface with 3.3 V, 5 V, and 12 V automotive/industrial rails without level-shifting.
Gain Bandwidth Product	900 kHz typ. at 16 V - enables stable closed-loop gain ≥10 at 90 kHz or ≥2 at 450 kHz for anti-aliasing and active filtering.
Input Bias Current	1 pA typ. - preserves signal integrity from high-Z sources like pH electrodes, piezoresistive sensors, and photodiode transimpedance stages.
Offset Voltage (A-grade)	600 µV max. at 25 °C - reduces initial error in 12-bit ADC front-ends without trimming in cost-sensitive systems.
ESD Robustness	4 kV HBM - eliminates need for external protection diodes in exposed automotive sensor nodes and industrial I/O modules.
Operating Temperature	–40 °C to +125 °C - qualified for under-hood automotive applications and industrial control cabinets without derating.
Slew Rate	1.1 V/µs - supports 100 kHz full-scale sine output with <0.1% distortion in buffer configurations.

Pinout & Package

TSX564IQ4T is housed in a wettable flank QFN16 package (3 mm × 3 mm, 0.5 mm pitch), optimized for automated optical inspection (AOI) and solder joint reliability in automotive production. Thermal resistance R_thJA is 80 °C/W, enabling 4-channel operation at full spec without heatsinking below 70 °C ambient.

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 5, 7	Inverting Input (−)	High-impedance node accepting differential signals; rail-to-rail common-mode range supports direct connection to sensor bridges.
2, 4, 6, 8	Non-inverting Input (+)	Matches inverting input specs; enables true differential input stages and precision instrumentation amplifier configurations.
9, 11, 13, 15	Output	Capable of sourcing/sinking ≥30 mA at 16 V - drives 10 kΩ loads to rail with <100 mV saturation, suitable for driving ADC reference buffers.
10	V_CC+	Positive supply pin - requires local 10 nF ceramic decoupling to minimize PSRR degradation above 10 kHz.
16	V_CC−	Ground reference pin - must be connected directly to low-impedance ground plane; shared return for all four channels.
12, 14	No Connect (NC)	Internally unconnected; left floating per datasheet - no routing or thermal pad tie required.

Key Features

Feature	Design Value
Rail-to-rail input with phase-reversal immunity	Enables direct interfacing with sensors operating near supply rails (e.g., 0–5 V thermistor dividers) without clipping or output inversion.
16 V CMOS process architecture	Delivers 900 kHz GBP at only 250 µA/channel - achieves >3× better speed/power ratio than legacy 5 V op-amps in same package.
AEC-Q100 qualified (Grade 0)	Validated for automotive powertrain and chassis applications - includes stress testing at 125 °C ambient and 150 °C junction temperature.
Low-frequency noise: 15 µV_PP (0.1–10 Hz)	Supports sub-µV-level DC measurements in medical ECG front-ends and precision weigh scales without chopper stabilization.
Common-mode rejection: 95 dB at 16 V	Maintains accuracy in noisy 12 V battery environments - rejects engine cranking transients and alternator ripple in vehicle sensor nodes.

Applications

Automotive Cabin Pressure Sensor

Industrial Thermocouple Amplifier

Use Scenario: Measures cabin pressure via piezoresistive sensor bridge in HVAC control units, operating continuously at 85 °C ambient.

IC Role / Device Role / Timing Role: Quad amplifier configures two channels as precision bridge excitation buffers and two as differential input stages with 100× gain.

Use Value: 1 pA input bias avoids bridge imbalance errors; 600 µV max V_IO ensures <0.1% full-scale error over lifetime without calibration.

Use Scenario: Amplifies µV-level thermocouple outputs in factory-floor temperature controllers with 0.1 °C resolution requirement.

IC Role / Device Role / Timing Role: One channel serves as cold-junction compensation buffer; remaining three implement programmable gain, filtering, and ADC driver.

Use Value: 15 µV_PP low-frequency noise enables 0.05 °C effective resolution; 125 °C rating allows placement near furnace enclosures.

Medical Pulse Oximeter Analog Front-End

Smart Grid Current Transformer Interface

Use Scenario: Conditions red/IR photodiode currents in portable oximeters, requiring ultra-low power and minimal self-heating.

IC Role / Device Role / Timing Role: Two amplifiers act as transimpedance stages; two provide correlated double-sampling subtraction for ambient light cancellation.

Use Value: 250 µA/channel draw extends battery life to >72 hours; rail-to-rail input captures full photodiode dynamic range at 3.3 V supply.

Use Scenario: Interfaces split-core current transformers in DIN-rail energy meters, exposed to 2 kV surge transients and wide temperature swings.

IC Role / Device Role / Timing Role: Configured as precision current-to-voltage converter and second-stage gain/level-shift stage before isolation barrier.

Use Value: 4 kV HBM ESD rating withstands field surges; 95 dB CMRR rejects common-mode noise from switching power supplies and motor drives.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad micropower op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TSX564AIDT	Same die, TSSOP14 package - larger footprint, higher R_thJA (100 °C/W), no wettable flanks.	Better suited for prototyping and manual rework; less ideal for AOI-based automotive SMT lines.	Select when board space permits and thermal budget allows >10 °C higher junction rise at same load.
LMV324QDRQ1	Lower GBP (1 MHz), higher I_CC (130 µA/channel), no A-grade V_IO option, 5.5 V max supply.	Limited to 5 V systems; insufficient for 12 V automotive sensor rails or high-precision DC gain stability.	Choose only for cost-driven 3.3 V consumer applications where 1 mV V_IO and 125 °C operation are not required.

Compared with TSX564AIDT, TSX564IQ4T offers superior thermal performance and automated assembly compatibility; versus LMV324QDRQ1, it provides wider supply range, lower offset drift, and guaranteed A-grade precision - making it the sole choice for AEC-Q100-compliant, high-accuracy 12 V sensor nodes.

Availability

TSX564IQ4T is available at Aetrix Electronics and suitable for automotive ECU signal conditioning, industrial temperature monitoring systems, and portable medical instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for TSX564IQ4T 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 automotive, industrial, and consumer markets.

The TSX56x series was developed specifically for high-accuracy, low-power signal conditioning in automotive and industrial environments - emphasizing rail-to-rail input, AEC-Q100 qualification, and robustness in thermally demanding applications.

FAQ

Is TSX564IQ4T pin-compatible with other quad op-amps in QFN16 packages?

No - TSX564IQ4T uses a proprietary pinout optimized for its internal quad topology and thermal layout. It is not pin-compatible with generic QFN16 op-amps like MCP6004 or TLV2464. Pin mapping must follow Figure 1 in ST's DocID023274 Rev 5, where pins 12 and 14 are NC and V_CC− is on pin 16, not pin 1.

Does TSX564IQ4T support true rail-to-rail output swing?

No - TSX564IQ4T features rail-to-rail *input* only. Output swing is specified as 70 mV from each rail (e.g., 70 mV above V_CC−, 70 mV below V_CC+) under 10 kΩ load. For rail-to-rail output, ST recommends the TSZ124 or TSV914 families, which use different output stage architecture.

What is the maximum capacitive load the TSX564IQ4T can drive stably?

TSX564IQ4T maintains 55° phase margin and unity-gain stability up to 100 pF capacitive load, as verified in Figure 13 of the datasheet. Driving >100 pF requires external isolation resistor (≥100 Ω) between output and load to prevent peaking or oscillation - critical for driving ADC input capacitance or long PCB traces.

Can TSX564IQ4T be used in single-supply 3.3 V applications with input signals near ground?

Yes - its rail-to-rail input extends to (V_CC−) –0.1 V, allowing valid operation with inputs down to –100 mV relative to ground. This enables accurate measurement of slightly negative sensor offsets (e.g., thermocouples or bridge imbalances) without level-shifting, provided V_CC− is tied to system ground.

TSX564IQ4T Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 16-UFQFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: CMOS

Number of Circuits:: 4

Output Type:: Rail-to-Rail

Slew Rate:: 1.1V/µs

Gain Bandwidth Product:: 900 kHz

-3db Bandwidth:: -

Current - Input Bias:: 1 pA

Voltage - Input Offset:: 1 mV

Current - Supply:: 250µA

Current - Output / Channel:: 92 mA

Voltage - Supply Span (Min):: 3 V

Voltage - Supply Span (Max):: 16 V

Operating Temperature:: -40°C ~ 125°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 16-QFN (3x3)

TSX564IQ4T FAQ

1.How can I place an order for TSX564IQ4T through Aetrix?

Please submit a Request for Quotation (RFQ) for TSX564IQ4T 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 TSX564IQ4T reliable?

The price and inventory of TSX564IQ4T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSX564IQ4T is usually 5 days.

3.What payment methods are accepted for TSX564IQ4T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSX564IQ4T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSX564IQ4T?

TSX564IQ4T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSX564IQ4T 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 TSX564IQ4T?

For technical support, including TSX564IQ4T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSX564IQ4T requirements.

6.How does Aetrix verify that TSX564IQ4T is sourced from the original manufacturer or authorized distributors?

All TSX564IQ4T 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 TSX564IQ4T meets industry standards.

7.What is the process for return or replacement of TSX564IQ4T?

All TSX564IQ4T units undergo pre-shipment inspection (PSI). If there is an issue with TSX564IQ4T, 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 TSX564IQ4T part is unused and in its original packaging.

Return procedure for TSX564IQ4T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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