THS4522 - Very Low Power Dual Fully Differential Amp | TI
MPN: THS4522 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.74 | $274.00 |
| 500 | $2.47 | $1,235.00 |
| 1,000 | $2.19 | $2,190.00 |
Drop-in alternatives for THS4522 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
THS4552
β Drop-Inπ Reference alternative (not in catalog)
THS4521
β Drop-Inπ Reference alternative (not in catalog)
THS4524
β Drop-Inπ Reference alternative (not in catalog)
LMH6552
β Drop-Inπ Reference alternative (not in catalog)
ADA4932-2
β Drop-Inπ Reference alternative (not in catalog)
LTC6400-20
β Drop-Inπ Reference alternative (not in catalog)
THS4522 Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Amplifier Type | Fully Differential |
| Supply Voltage Range | 2.5 V to 5.5 V |
| Bandwidth (Gain=1) | 95 MHz |
| Slew Rate | 100 V/Β΅s |
| Input Voltage Noise | 4.6 nV/βHz |
| Quiescent Current per Channel | 1.1 mA |
| Output Current | 55 mA |
| Offset Voltage | 0.5 mV |
| Rail-to-Rail Output | Yes |
| Negative Rail Input | Yes |
| Enable Pin | Yes |
| Operating Temperature Range | -40Β°C to +125Β°C |
| Package | 16-TSSOP (PW) |
| RoHS Status | Compliant |
THS4522 Pin Configuration
| Pin 1 | OUT1- β Inverting output of channel 1 |
| Pin 2 | OUT1+ β Non-inverting output of channel 1 |
| Pin 3 | VCC β Positive power supply |
| Pin 4 | VOCM1 β Output common-mode voltage control for channel 1 |
| Pin 5 | PD1 β Power-down for channel 1 (active low) |
| Pin 6 | IN1- β Inverting input of channel 1 |
| Pin 7 | IN1+ β Non-inverting input of channel 1 |
| Pin 8 | VEE β Negative power supply (or ground) |
| Pin 9 | IN2+ β Non-inverting input of channel 2 |
| Pin 10 | IN2- β Inverting input of channel 2 |
| Pin 11 | PD2 β Power-down for channel 2 (active low) |
| Pin 12 | VOCM2 β Output common-mode voltage control for channel 2 |
| Pin 13 | VEE β Negative power supply (or ground) |
| Pin 14 | OUT2+ β Non-inverting output of channel 2 |
| Pin 15 | OUT2- β Inverting output of channel 2 |
| Pin 16 | VCC β Positive power supply |
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
THS4522 is suitable for 6 applications: High-Speed ADC Driver, Medical Imaging, Industrial Process Control, Test and Measurement, Portable Battery-Powered Devices, Automotive Sensor Interface.
High-Speed ADC Driver
The THS4522's fully differential output and 95 MHz bandwidth make it ideal for driving high-speed ADCs. It provides balanced signals that improve common-mode rejection and reduce even-order harmonics, enhancing the ADC's effective resolution. The low noise of 4.6 nV/βHz ensures minimal signal degradation, while the rail-to-rail output maximizes dynamic range. In a typical circuit, the THS4522 is placed between the analog front-end and the ADC input, with a feedback network setting the gain. The VOCM pin sets the output common-mode voltage to match the ADC's reference, ensuring optimal performance. The low quiescent current of 1.1 mA per channel makes it suitable for multi-channel data acquisition systems where power dissipation is a concern.
Recommended
Medical Imaging
In medical imaging systems such as ultrasound and MRI, the THS4522 provides low-noise amplification of sensor signals. Its 4.6 nV/βHz input noise and high bandwidth preserve the fidelity of the signals, which is critical for diagnostic accuracy. The low power consumption is advantageous for portable and battery-operated medical devices. The fully differential architecture rejects common-mode interference, improving signal quality in noisy hospital environments. The THS4522 can be used in the analog front-end to condition signals from transducers before digitization. Its rail-to-rail output allows full use of the ADC's input range, maximizing dynamic range. The enable pin can be used for power management in battery-powered devices, extending operational life.
Recommended
Industrial Process Control
The THS4522 is well-suited for industrial process control systems that require precise signal conditioning. Its wide supply voltage range (2.5V to 5.5V) allows operation from standard industrial power rails. The negative rail input capability enables interfacing with ground-referenced sensors, simplifying design. The low offset voltage of 0.5 mV ensures accurate measurement of small signals. The device's robust operating temperature range of -40Β°C to +125Β°C makes it suitable for harsh industrial environments. In a typical application, the THS4522 amplifies the output of a bridge sensor or thermocouple before feeding it to an ADC. The fully differential output improves noise immunity in electrically noisy factory settings. The low power consumption reduces heat generation, enhancing reliability.
Recommended
Test and Measurement
In test and measurement equipment, the THS4522 provides high-bandwidth, low-distortion signal conditioning. Its 95 MHz bandwidth and 100 V/Β΅s slew rate support fast signal acquisition, while the low noise ensures accurate measurements. The fully differential output is ideal for driving differential inputs of high-speed digitizers. The device's low power consumption is beneficial for portable test instruments. The THS4522 can be used in oscilloscope front-ends, spectrum analyzers, and data acquisition cards. Its rail-to-rail output maximizes the input range of the following ADC, improving measurement resolution. The enable pin allows power-down in battery-operated instruments to conserve energy. The device's small TSSOP-16 package saves board space in compact designs.
Recommended
Portable Battery-Powered Devices
The THS4522's very low quiescent current of 1.1 mA per channel makes it ideal for portable, battery-powered devices such as handheld medical monitors, portable audio recorders, and wireless sensors. The low power consumption extends battery life, which is critical for these applications. The device operates from a 2.5V to 5.5V supply, allowing direct operation from a single lithium-ion cell or two alkaline batteries. The rail-to-rail output maximizes signal swing, improving dynamic range in low-voltage systems. The enable pin can be used to shut down the amplifier when not in use, further reducing power consumption. The small TSSOP-16 package is suitable for space-constrained designs.
Recommended
Automotive Sensor Interface
The THS4522 is suitable for automotive sensor interfaces, such as those used in engine control units and battery management systems. Its wide operating temperature range of -40Β°C to +125Β°C meets automotive requirements. The negative rail input allows interfacing with sensors that have ground-referenced outputs. The low offset voltage and low noise ensure accurate measurement of sensor signals. The device's low power consumption reduces heat generation in the engine compartment. The fully differential output provides good common-mode rejection, which is important in the electrically noisy automotive environment. The THS4522 can be used to condition signals from temperature, pressure, and current sensors before digitization. Its small package is suitable for space-constrained automotive modules.
Recommended
Recommended Products Summary
Engineering reference data for THS4522 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | THS4552 | THS4521 | THS4524 | LMH6552 | ADA4932-2 | LTC6400-20 |
|---|---|---|---|---|---|---|---|
| Package | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices | Analog Devices |
| Number of Channels | 2 | 2 | 1 | 4 | 1 | 2 | 1 |
| Bandwidth | 95 MHz | 150 MHz | 95 MHz | 95 MHz | 1.5 GHz | 560 MHz | 2 GHz |
| Slew Rate | 100 V/Β΅s | 220 V/Β΅s | 100 V/Β΅s | 100 V/Β΅s | 2400 V/Β΅s | 2800 V/Β΅s | 3400 V/Β΅s |
| Input Voltage Noise | 4.6 nV/βHz | 3.3 nV/βHz | 4.6 nV/βHz | 4.6 nV/βHz | 0.6 nV/βHz | 3.5 nV/βHz | 0.85 nV/βHz |
| Quiescent Current per Channel | 1.1 mA | 1.35 mA | 1.1 mA | 1.1 mA | 20 mA | 9.6 mA | 50 mA |
| Supply Voltage Range | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 4.5V to 12V | 3.3V to 10V | 2.7V to 5.25V |
Key Differentiators
- Very low power consumption (vs LMH6552)
- Dual-channel in TSSOP-16 (vs THS4521)
- Negative rail input (vs ADA4932-2)
Design Notes
The THS4522 operates from 2.5V to 5.5V. Use a low-noise LDO to supply the amplifier to avoid power supply noise coupling into the signal. Place 0.1 Β΅F and 10 Β΅F decoupling capacitors close to the VCC and VEE pins. For single-supply operation, connect VEE to ground and set the output common-mode voltage via the VOCM pin to mid-supply.
For optimal performance, use a solid ground plane and minimize trace lengths for feedback and input connections. Keep the feedback resistors close to the inputs to reduce parasitic capacitance. Use differential routing for the output traces to maintain balance. The exposed pad (if present) should be soldered to the ground plane for thermal and electrical performance.
Ensure the input common-mode voltage does not exceed the specified range. The THS4522 allows the input to go to the negative rail, but not above the positive rail. Also, avoid driving the output beyond the rail-to-rail limits, which can cause distortion. Use precision resistors (1% or better) for the feedback network to maintain gain accuracy.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified.
