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Texas Instruments THS4532IPW
- Part No.:
- THS4532IPW
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
THS4532IPW.pdf
- Description:
- IC OPAMP DIFF 2 CIRCUIT 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:546
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Product details
Overview
THS4532IPW from Texas Instruments is a dual-channel, ultra-low-power, fully-differential amplifier with rail-to-rail output and negative-rail input capability. It operates from 2.5 V to 5.5 V, draws only 250 µA per channel, and delivers 36 MHz bandwidth and –120 dBc THD at 1 kHz (1 VRMS), making it ideal for driving SAR and delta-sigma ADCs in battery-powered data acquisition systems.
For engineers reviewing the THS4532IPW datasheet, THS4532IPW pinout, THS4532IPW application, or THS4532IPW equivalent, key selection criteria include its 250 µA quiescent current per channel, VOCM-controlled common-mode output, dual independent power-down pins, and TSSOP-16 package compatibility with high-density PCB layouts.
Technical Context
The THS4532IPW integrates two fully independent differential amplifiers, each with dedicated VOCM, PD, and supply pins (VS1+/VS2+), enabling flexible single-ended-to-differential or differential-to-differential signal conditioning without inter-channel coupling. Its input common-mode range extends 0.2 V below VS–, supporting ground-referenced sensor interfaces on single-supply rails.
Each amplifier features precision output common-mode control (±1 mV offset, 24 MHz VOCM bandwidth), 114 dB open-loop gain, and 200 V/µs slew rate-enabling accurate dc-coupled ADC driver operation across –40°C to +125°C while maintaining < ±100 µV input offset and ±3 µV/°C drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5 V to 5.5 V - supports direct interface with 3.3 V and 5 V microcontrollers and ADCs without level-shifting. |
| Quiescent Current | 250 µA per channel - enables >10-year battery life in portable instrumentation with dual-channel active operation. |
| Small-Signal Bandwidth | 36 MHz at G = 1 - sufficient for driving 1 MSPS+ SAR ADCs with full settling before conversion. |
| THD @ 1 kHz | –120 dBc (1 VRMS, RL = 2 kΩ) - preserves dynamic range in 16-bit+ precision data acquisition paths. |
| Input Offset Voltage | ±100 µV max - minimizes dc error in precision sensor front-ends and closed-loop transimpedance configurations. |
| Slew Rate | 220 V/µs (rising), 390 V/µs (falling) - ensures monotonic response to fast transient inputs without slewing-induced distortion. |
| Power-Down Current | 0.5 µA per channel - allows selective channel shutdown in multi-channel systems to scale power linearly with active channels. |
Pinout & Package
TSSOP-16 package (5.00 mm × 4.40 mm), thermally enhanced with exposed pad (not electrically connected), rated for 122.4°C/W junction-to-ambient thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PD1, PD2 | Channel 1 & 2 power-down control | Active-high logic inputs; drive to VS+ for normal operation, VS– for 0.5 µA shutdown - enables independent channel gating. |
| VIN1±, VIN2± | Differential input pairs | True differential inputs with CM range extending 0.2 V below VS– - accepts ground-referenced signals directly. |
| VOUT1±, VOUT2± | Differential outputs | Rail-to-rail swing (VS– + 0.1 V to VS+ – 0.12 V) - maximizes ADC input utilization without external biasing. |
| VOCM1, VOCM2 | Output common-mode voltage setpoints | Analog inputs setting precise output midpoint (±1 mV accuracy); support dc-coupled ADC interfacing with fixed or programmable reference. |
| VS1+, VS2+, VS− | Independent positive supplies & shared negative rail | Allows separate analog/digital domain isolation or dual-voltage operation; VS− pins internally tied for multichannel use. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power per channel | 250 µA IQ enables dual-channel operation under 0.5 mW at 2.5 V - critical for wearable and IoT edge nodes. |
| Fully differential architecture | Rejects even-order harmonics and common-mode noise inherently - improves SNR in noisy industrial environments. |
| Negative-rail input (NRI) | Inputs operate down to VS– – 0.2 V - eliminates need for negative supply when conditioning 0–VREF sensor outputs. |
| Rail-to-rail output (RRO) | Delivers full dynamic range to ADCs with 1.2 V headroom margin at 5 V supply - increases effective resolution by ≥0.5 bit. |
| Dual independent VOCM control | Per-channel common-mode setpoint enables mismatch-tolerant interleaved ADC architectures or independent signal chains. |
Applications
| Portable Data Loggers | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Battery-powered environmental monitors acquiring temperature, pressure, and humidity via low-output-impedance sensors. IC Role / Device Role / Timing Role: Single-ended sensor output → differential ADC driver with dc-coupled VOCM alignment to ADC reference midpoint. Use Value: 250 µA/channel current extends 10-year battery life; NRI input accepts 0 V–grounded sensor outputs without charge pumps or level shifters. |
Use Scenario: 4–20 mA loop-powered transmitters conditioning RTD or strain-gauge bridges in factory automation PLC modules. IC Role / Device Role / Timing Role: Low-noise, low-drift front-end amplifier with programmable VOCM for ratiometric ADC interfacing. Use Value: ±100 µV VOS and ±3 µV/°C drift maintain <0.1% system accuracy over –40°C to +85°C ambient range. |
| Medical ECG Front-Ends | High-Channel-Count DAQ Systems |
|
Use Scenario: Multi-lead ECG acquisition with simultaneous sampling of biopotential signals referenced to Wilson central terminal. IC Role / Device Role / Timing Role: Differential amplifier providing patient-isolated, low-noise signal conditioning prior to 16-bit SAR ADC digitization. Use Value: –120 dBc THD at 1 kHz preserves diagnostic waveform fidelity; dual PD pins allow per-lead power gating during idle periods. |
Use Scenario: Modular test equipment with 32-channel synchronized analog input cards requiring minimal board area and thermal footprint. IC Role / Device Role / Timing Role: Dual-channel ADC driver in compact TSSOP-16 package, sharing VS− and decoupling across both amplifiers. Use Value: 5.0 mm × 4.4 mm footprint supports >20 channels per 10 cm²; 122.4°C/W θJA enables convection-cooled operation at full spec. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully-differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4531IPW | Identical pinout and architecture but single-channel; 250 µA IQ, 36 MHz BW, –104 dBc THD @ 100 kHz. | Lacks second amplifier and independent PD/VOCM - suitable only for single-channel systems where space permits two devices. | Select THS4531IPW when channel count is fixed at one and board area allows discrete duplication. |
| THS4521IDGKT | Single-channel, higher power (1.14 mA IQ), wider bandwidth (145 MHz), lower THD (–120 dBc @ 1 MHz). | Requires external VOCM buffer and lacks NRI input - demands additional components for dc-coupled, ground-referenced designs. | Choose THS4521IDGKT only when >100 MSPS sampling or sub-100 ns settling is required, accepting higher power and design complexity. |
Compared with THS4531IPW and THS4521IDGKT, the THS4532IPW uniquely balances dual-channel integration, ultra-low power, NRI capability, and VOCM precision-making it the only option that meets all four requirements simultaneously in space-constrained, battery-operated, dc-coupled ADC driver applications.
Availability
THS4532IPW is available at Aetrix Electronics and suitable for portable data loggers, industrial sensor signal conditioning, medical ECG front-ends, and high-channel-count DAQ systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for THS4532IPW 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision amplifiers and data converter interface solutions.
The THS4532IPW belongs to TI's ultra-low-power fully-differential amplifier product line, engineered specifically for high-resolution, low-power data acquisition in battery-operated and thermally constrained systems from –40°C to +125°C.
FAQ
What is the maximum operating temperature range for the THS4532IPW?
The THS4532IPW is characterized for continuous operation from –40°C to +125°C ambient temperature, with guaranteed performance across this full extended industrial range per datasheet Section 7.3. This makes THS4532IPW suitable for deployment in harsh environments such as motor control enclosures, outdoor instrumentation, and automotive under-hood sensing applications where thermal margins are critical.
Does the THS4532IPW support true dc-coupled operation with ground-referenced inputs?
Yes, the THS4532IPW supports true dc-coupled operation with ground-referenced inputs due to its negative-rail input (NRI) feature: the input common-mode range extends to VS– – 0.2 V. When powered from a single 3.3 V or 5 V supply with VS– = 0 V, THS4532IPW accepts 0 V–referenced sensor outputs directly-eliminating the need for ac-coupling capacitors or level-shifting circuitry in the THS4532IPW signal path.
How does the VOCM pin function in the THS4532IPW, and what accuracy can be expected?
The VOCM1 and VOCM2 pins on the THS4532IPW set the output common-mode voltage for each amplifier independently. With a typical gain of 0.996 V/V and ±1 mV offset, the actual output common-mode voltage tracks the VOCM input within ±1 mV (±5 mV max) across temperature. This precision enables direct dc-coupling to mid-supply-referenced ADCs like the ADS8861 without calibration or trimming-critical for maintaining THS4532IPW system-level accuracy.
Can both channels of the THS4532IPW be powered down independently?
Yes, the THS4532IPW provides two dedicated power-down pins-PD1 and PD2-that control each amplifier independently. Driving either pin low (≤0.7 V) reduces its respective channel's quiescent current to 0.5 µA while preserving bias states and enabling fast wake-up (600 ns turn-on delay). This capability allows dynamic power scaling in multi-channel THS4532IPW systems, such as selectively disabling unused ECG leads or DAQ channels to extend battery runtime.
What is the small-signal bandwidth of the THS4532IPW at G = 1 and VS = 5 V?
At VS = 5 V and G = 1 V/V, the THS4532IPW delivers a small-signal bandwidth of 36 MHz (typical), as specified in Section 7.6 of the datasheet. This bandwidth remains stable across load conditions up to 2 kΩ differential and supports clean signal amplification through the audio and ultrasonic bands-ensuring faithful reproduction of fast transients in THS4532IPW-based sensor and communication front-ends.
THS4532IPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Differential
- Number of Circuits:
- 2
- Output Type:
- Differential, Rail-to-Rail
- Slew Rate:
- 390V/µs
- Gain Bandwidth Product:
- 27 MHz
- -3db Bandwidth:
- 36 MHz
- Current - Input Bias:
- 200 nA
- Voltage - Input Offset:
- 80 µV
- Current - Supply:
- 250µA (x2 Channels)
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
THS4532IPW FAQ
1.How can I place an order for THS4532IPW through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4532IPW 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 THS4532IPW reliable?
The price and inventory of THS4532IPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4532IPW is usually 5 days.
3.What payment methods are accepted for THS4532IPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4532IPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4532IPW?
THS4532IPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4532IPW 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 THS4532IPW?
For technical support, including THS4532IPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4532IPW requirements.
6.How does Aetrix verify that THS4532IPW is sourced from the original manufacturer or authorized distributors?
All THS4532IPW 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 THS4532IPW meets industry standards.
7.What is the process for return or replacement of THS4532IPW?
All THS4532IPW units undergo pre-shipment inspection (PSI). If there is an issue with THS4532IPW, 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 THS4532IPW part is unused and in its original packaging.
Return procedure for THS4532IPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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