THS4532 - Dual 0.25mA RRO Fully-Differential Amplifier | TI
MPN: THS4532 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.85 | $1,850.00 |
Drop-in alternatives for THS4532 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
THS4522
✅ Drop-In✓ In Stock
$2.19 / Unit
View Datasheet →THS4524
✅ Drop-In📋 Reference alternative (not in catalog)
THS4531A
✅ Drop-In✓ In Stock
$1.82 / Unit
View Datasheet →ADA4940-2ACPZ
✅ Drop-In✓ In Stock
$4.33 / Unit
View Datasheet →LTC6362
✅ Drop-In📋 Reference alternative (not in catalog)
THS4532 Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Supply Voltage Range | 2.5 V to 5.5 V |
| Quiescent Current per Channel | 250 µA |
| Output Type | Rail-to-Rail |
| Input Common-Mode Range | Below negative rail |
| Bandwidth | [DATA_NEEDED: -3dB bandwidth] |
| Slew Rate | [DATA_NEEDED: slew rate] |
| Voltage Noise Density | [DATA_NEEDED: input voltage noise] |
| Current Noise Density | [DATA_NEEDED: input current noise] |
| THD+N | [DATA_NEEDED: THD+N at 1kHz] |
| CMRR | [DATA_NEEDED: common-mode rejection ratio] |
| Operating Temperature Range | -40°C to +125°C |
| Package | 16-TSSOP (PW) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
THS4532 Pin Configuration
| Pin 1 | OUT- — Inverting differential output |
| Pin 2 | V- — Negative supply |
| Pin 3 | IN- — Inverting input |
| Pin 4 | IN+ — Non-inverting input |
| Pin 5 | VOCM — Output common-mode voltage control |
| Pin 6 | V+ — Positive supply |
| Pin 7 | OUT+ — Non-inverting differential output |
| Pin 8 | PD — Power-down control (active high) |
| Pin 9 | OUT+ — Non-inverting differential output (second channel) |
| Pin 10 | V+ — Positive supply (second channel) |
| Pin 11 | VOCM — Output common-mode voltage control (second channel) |
| Pin 12 | IN+ — Non-inverting input (second channel) |
| Pin 13 | IN- — Inverting input (second channel) |
| Pin 14 | V- — Negative supply (second channel) |
| Pin 15 | OUT- — Inverting differential output (second channel) |
| Pin 16 | PD — Power-down control (second channel) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
THS4532 is suitable for 6 applications: Portable Medical Devices, Battery-Powered Industrial Sensors, Low-Power Audio Processing, Data Acquisition Systems, Single-Ended to Differential Conversion, Wireless Sensor Nodes.
Portable Medical Devices
The THS4532's ultra-low power consumption of 250µA per channel extends battery life in portable medical monitors and wearable health sensors. Its rail-to-rail output and input common-mode range below the negative rail allow direct interfacing with low-voltage sensors and ADCs. The device's small 16-TSSOP package enables compact PCB designs, and its -40°C to +125°C range ensures reliable operation in body-worn devices. By driving high-resolution ADCs with a fully-differential signal, the THS4532 preserves signal integrity while minimizing power draw, making it ideal for continuous patient monitoring.
Recommended
Battery-Powered Industrial Sensors
In industrial wireless sensor nodes, the THS4532 provides low-power differential signal conditioning for strain gauges, thermocouples, and pressure sensors. Its 2.5V to 5.5V supply range matches common battery voltages, and the 250µA per channel quiescent current minimizes power drain. The input common-mode range below the negative rail allows direct connection to ground-referenced sensors. The fully-differential output drives ADCs with improved noise immunity, crucial in electrically noisy industrial environments. The device's extended temperature range supports outdoor and harsh-condition deployments.
Recommended
Low-Power Audio Processing
The THS4532 is suitable for low-power audio applications such as portable recorders and hearing aids, where its low noise and distortion preserve audio quality. The fully-differential architecture cancels common-mode noise, improving signal-to-noise ratio in audio paths. With a supply range of 2.5V to 5.5V, it can operate from a single lithium-ion cell. The rail-to-rail output maximizes dynamic range, and the low quiescent current extends playback time. The device can drive audio ADCs or be used in single-ended to differential conversion for balanced audio interfaces.
Recommended
Data Acquisition Systems
The THS4532 is designed for low-power data acquisition systems, providing differential drive to high-resolution ADCs. Its ultra-low power consumption allows high channel density without excessive heat dissipation. The input common-mode range below the negative rail simplifies single-supply designs, and the rail-to-rail output maximizes ADC input range. The device's low offset and drift ensure accurate measurements over temperature. It is ideal for multichannel systems in portable instrumentation, where power and space are constrained.
Recommended
Single-Ended to Differential Conversion
The THS4532 converts single-ended signals to differential outputs, which is essential for driving ADCs and balanced transmission lines. Its fully-differential architecture provides common-mode rejection, reducing noise pickup. The device's low power consumption makes it suitable for battery-powered sensors. The input common-mode range below the negative rail allows ground-referenced single-ended inputs. The output common-mode voltage can be set independently, enabling interface with ADCs having specific input ranges. This application is common in precision measurement and industrial control.
Recommended
Wireless Sensor Nodes
In wireless sensor nodes, the THS4532 conditions signals from various sensors before transmission. Its ultra-low power consumption is critical for battery life, and the small package saves board space. The device operates from 2.5V to 5.5V, compatible with common battery configurations. The rail-to-rail output and differential signaling improve signal integrity over the node's PCB. The extended temperature range supports outdoor deployment. The THS4532 can interface with low-power microcontrollers and radios, making it a key component in IoT devices.
Recommended
Recommended Products Summary
Engineering reference data for THS4532 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | THS4522 | THS4524 | THS4531A | ADA4940-2 | LTC6362 |
|---|---|---|---|---|---|---|
| Package | 16-TSSOP (PW) | 16-TSSOP (PW) | 16-TSSOP (PW) | 16-TSSOP (PW) | 16-TSSOP (PW) | 16-TSSOP (PW) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices | Analog Devices |
| Number of Channels | 2 | 1 | 4 | 1 | 2 | 2 |
| Supply Voltage Range | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 3V to 5.5V | 2.8V to 5.25V |
| Quiescent Current per Channel | 250 µA | 250 µA | 250 µA | 250 µA | 1.25 mA | 1 mA |
| Rail-to-Rail Output | Yes | Yes | Yes | Yes | Yes | Yes |
| Input Common-Mode Range | Below negative rail | Below negative rail | Below negative rail | Below negative rail | Includes negative rail | Includes negative rail |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
Key Differentiators
- Ultra-low power consumption of 250µA per channel (vs ADA4940-2)
- Dual-channel configuration in a 16-TSSOP package (vs THS4522)
- Input common-mode range below the negative rail (vs LTC6362)
Design Notes
The THS4532 operates from 2.5V to 5.5V and draws only 250µA per channel. Ensure the power supply is adequately decoupled with 0.1µF ceramic capacitors placed close to the V+ and V- pins. For optimal performance, use a low-noise LDO regulator if the supply is noisy. The low quiescent current makes it suitable for battery-powered designs, but verify the supply voltage remains within the specified range under load.
For best noise performance, keep the feedback network components close to the amplifier and use short, direct traces. The input common-mode range extends below the negative rail, allowing ground-referenced inputs, but ensure the PCB layout minimizes parasitic capacitance at the inputs. Use a solid ground plane and avoid routing high-speed digital traces near the analog inputs to reduce coupling.
Do not exceed the absolute maximum supply voltage of 5.5V. The power-down (PD) pin is active high; leave it low or connect to ground for normal operation. When driving an ADC, set the output common-mode voltage (VOCM) to the ADC's reference midpoint to maximize dynamic range. Incorrect VOCM setting can cause clipping or reduced SNR. Always refer to the datasheet for the recommended external component values.
Compliance Information
RoHS compliance confirmed by distributor listings. Other compliance data not explicitly stated in the provided sources.
