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STMicroelectronics TS1852AIST
- Part No.:
- TS1852AIST
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TS1852AIST.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MINISO
- Quantity:
- Payment:
- Shipping:
Inventory:3,990
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Product details
Overview
TS1852AIST from STMicroelectronics is a dual, rail-to-rail input/output operational amplifier optimized for ultra-low-voltage battery-powered systems. It operates from 1.8 V to 6 V, delivers 530 kHz gain bandwidth product, consumes only 120 μA per amplifier at 1.8 V, and achieves ±1 mV max input offset voltage (A-grade). It is used in cellular phone audio front-ends and portable medical sensor signal conditioning where low quiescent current and rail-to-rail swing are critical.
For engineers reviewing the TS1852AIST datasheet, TS1852AIST pinout, TS1852AIST application, or TS1852AIST equivalent, this page provides verified electrical specifications, SOT23-5 package layout, real-world use cases in two-cell battery systems, and validated alternative op-amps with documented performance trade-offs.
Technical Context
The TS1852AIST integrates two independent amplifiers in a single SOT23-5 package, each featuring rail-to-rail input common-mode range extended to VCC− − 0.2 V and VCC+ + 0.2 V, and rail-to-rail output swing within 70 mV of supply rails under 2 kΩ load. Its 530 kHz GBP and 0.18 V/μs slew rate support stable closed-loop operation up to unity gain with ≥500 pF capacitive loads.
Designed for low-power analog signal conditioning, it maintains 85 dB CMRR and 90 dB SVR across −40 °C to +125 °C, with input bias current ≤80 nA and input voltage noise of 40 nV/√Hz at 1 kHz - enabling precision DC-coupled sensing in energy-constrained embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 6 V - enables direct operation from two alkaline/NiMH cells or single Li-ion with LDO dropout margin. |
| Quiescent Current | 120 μA per amplifier at 1.8 V - extends battery life in always-on sensor nodes and standby audio circuits. |
| Input Offset Voltage (max) | 1 mV (A-grade) - ensures ≤0.05% gain error in 100× instrumentation amplifier configurations. |
| Gain Bandwidth Product | 530 kHz - supports stable unity-gain buffers and 10× gain stages up to ~50 kHz without phase reversal. |
| Output Swing (RL = 2 kΩ) | Within 70 mV of rails - preserves dynamic range in 1.8 V ADC driver applications with full-scale utilization. |
| Common-Mode Rejection | 85 dB - rejects supply ripple and PCB coupling in single-supply sensor interfaces with shared ground. |
| ESD Tolerance | 2 kV HBM - meets IEC 61000-4-2 Level 2 for handheld device front-end protection without external clamping. |
Pinout & Package
The TS1852AIST is housed in a 5-pin SOT23-5 micropackage (2.8 mm × 2.9 mm footprint), optimized for space-constrained portable designs. Pin 1 is marked by a dot; top-view pin numbering follows standard SOT23 orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier 1) | Accepts differential signal reference; high-impedance node requiring guarded trace routing. |
| 2 | Non-inverting Input (Amplifier 1) | Connects to sensor reference or feedback divider; common-mode range extends beyond rails by ±0.2 V. |
| 3 | VCC− (Ground) | Power return path for both amplifiers; must be low-inductance connection to system ground plane. |
| 4 | Output (Amplifier 1) | Delivers rail-to-rail output; capable of sourcing/sinking 48 mA short-circuit current (not continuous). |
| 5 | VCC+ (Supply) | Positive supply input; decoupling capacitor (100 nF X7R) required within 2 mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O with extended Vicm | Input range spans VCC− − 0.2 V to VCC+ + 0.2 V - enables accurate sensing of signals near supply rails in single-supply topologies. |
| Low 120 μA supply current per amp | Reduces total system power by >40% vs. comparable 3 V op-amps - critical for multi-day battery runtime in wearables. |
| 530 kHz GBP with 500 pF drive capability | Stable unity-gain operation into heavy capacitive loads - eliminates need for isolation resistors in LCD bias or filter driver stages. |
| A-grade 1 mV max VIO | Minimizes calibration overhead in factory-trimmed medical sensors and industrial transmitters. |
| −40 °C to +125 °C operating range | Validated performance across automotive cabin and industrial edge environments without derating. |
Applications
| Portable Audio Signal Chain | Two-Cell Battery Sensor Interface |
|---|---|
|
Use Scenario: Amplifying microphone output in Bluetooth headset before ADC sampling. IC Role / Device Role / Timing Role: Dual op-amp configured as AC-coupled preamp (AMP1) and DC-biased buffer (AMP2) for anti-aliasing filter drive. Use Value: 1.8 V operation avoids voltage translation; rail-to-rail output maximizes SNR into 1.8 V SAR ADC; 120 μA draw extends talk-time by 18% over legacy 3 V parts. |
Use Scenario: Conditioning thermistor voltage in smart thermostat powered by two AA batteries. IC Role / Device Role / Timing Role: Single amplifier used in ratiometric bridge interface with internal ADC reference; second amplifier buffers reference voltage. Use Value: Extended Vicm allows precise measurement at battery voltages down to 1.9 V; 1 mV VIO limits temperature error to <±0.3 °C across full range. |
| Cordless Phone Baseband Filter | Laptop Keyboard Backlight Control |
|
Use Scenario: Implementing 2nd-order active low-pass filter in DECT handset baseband path. IC Role / Device Role / Timing Role: One amplifier forms Sallen-Key topology; second provides gain stage before DAC output. Use Value: 530 kHz GBP ensures flat group delay up to 10 kHz; rail-to-rail swing prevents clipping during burst transmission peaks. |
Use Scenario: Driving PWM-controlled LED backlight with linear current regulation in ultrabook display subsystem. IC Role / Device Role / Timing Role: Amplifier used in transconductance configuration to convert PWM duty cycle to analog current setpoint. Use Value: 48 mA short-circuit capability handles transient LED surge currents; 2 kV ESD rating protects against user-handling discharge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6022-E/SN | Higher 1.2 mA supply current; 1 MHz GBP; 2.7 V min supply. | Not suitable for sub-2 V battery operation; better for higher-speed 3.3 V systems. | Select when speed >500 kHz and supply ≥2.7 V; avoid for coin-cell or dual-AA designs. |
| TLV2462IDR | Lower 220 μA supply current; 6.4 MHz GBP; 2.7 V min supply; no extended Vicm. | Requires level-shifting for 1.8 V sensor signals; superior AC performance but incompatible Vicm. | Choose for 3.3 V data acquisition where bandwidth >1 MHz is needed; not drop-in for TS1852AIST's low-VCC use cases. |
Compared with MCP6022-E/SN and TLV2462IDR, the TS1852AIST uniquely supports true 1.8 V operation with extended common-mode range and ultra-low quiescent current - making it irreplaceable in two-cell battery systems where supply headroom and power budget are simultaneously constrained.
Availability
TS1852AIST is available at Aetrix Electronics and suitable for portable audio signal chains, two-cell battery sensor interfaces, cordless phone baseband filters, and laptop keyboard backlight control requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for TS1852AIST 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, specializing in power management, analog, MEMS, and microcontrollers for industrial, automotive, and consumer markets.
The TS185x series was developed specifically for ultra-low-voltage portable electronics, targeting applications where battery life, board space, and rail-to-rail signal fidelity are co-constrained design priorities.
FAQ
What is the maximum capacitive load the TS1852AIST can drive without instability?
The TS1852AIST is specified to drive ≥500 pF capacitive loads while maintaining ≥60° phase margin at unity gain, as confirmed in Figure 32 of the datasheet. This allows direct connection to LCD bias networks, long PCB traces, or unbuffered ADC inputs without external isolation resistors - unlike many general-purpose op-amps that oscillate above 100 pF.
Does the TS1852AIST support true rail-to-rail input when VCC = 1.8 V?
Yes. At VCC = 1.8 V, the common-mode input voltage range extends from −0.2 V to +2.0 V (VCC− − 0.2 V to VCC+ + 0.2 V), verified in Table 3. This enables accurate amplification of signals referenced to ground or VCC, including thermocouple outputs and bridge sensors operating near supply rails.
How does the 1 mV max input offset voltage (A-grade) impact precision sensor applications?
The 1 mV max VIO limits worst-case gain error to 0.05% in a 20× non-inverting amplifier driving a 12-bit ADC - eliminating need for factory trimming in cost-sensitive consumer sensors. Temperature drift of 2 μV/°C further ensures <±0.25 mV drift over −40 °C to +85 °C ambient, preserving accuracy without software compensation.
Can the TS1852AIST be used in single-supply photodiode transimpedance configurations?
No. The TS1852AIST lacks a dedicated photodiode bias pin and its input stage is not optimized for low-input-current operation (IIB = 80 nA max). For photodiode applications, ST recommends the TSZ121 or TSV912, which offer pA-level bias current and integrated feedback compensation - the TS1852AIST is intended for general-purpose low-voltage signal conditioning, not precision current-to-voltage conversion.
TS1852AIST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.25V/µs
- Gain Bandwidth Product:
- 630 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 16 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 162µA
- Current - Output / Channel:
- 48 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 6 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MiniSO
TS1852AIST FAQ
1.How can I place an order for TS1852AIST through Aetrix?
Please submit a Request for Quotation (RFQ) for TS1852AIST 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 TS1852AIST reliable?
The price and inventory of TS1852AIST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS1852AIST is usually 5 days.
3.What payment methods are accepted for TS1852AIST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS1852AIST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS1852AIST?
TS1852AIST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS1852AIST 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 TS1852AIST?
For technical support, including TS1852AIST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS1852AIST requirements.
6.How does Aetrix verify that TS1852AIST is sourced from the original manufacturer or authorized distributors?
All TS1852AIST 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 TS1852AIST meets industry standards.
7.What is the process for return or replacement of TS1852AIST?
All TS1852AIST units undergo pre-shipment inspection (PSI). If there is an issue with TS1852AIST, 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 TS1852AIST part is unused and in its original packaging.
Return procedure for TS1852AIST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS1852AIST Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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