THS4522 - 95MHz Low Power Dual FDA | Texas Instruments
MPN: THS4522IPWR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.95 | $3.95 |
| 10 | $3.55 | $35.50 |
| 100 | $3.1 | $310.00 |
| 500 | $2.75 | $1,375.00 |
| 1,000 | $2.4 | $2,400.00 |
| 3,000 | $2.1 | $6,300.00 |
Drop-in alternatives for THS4522IPWR — 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:
THS4552IPWR
✅ Drop-In📋 Reference alternative (not in catalog)
THS4532IPWR
✅ Drop-In📋 Reference alternative (not in catalog)
THS4524IPWR
⚡ Same Package📋 Reference alternative (not in catalog)
THS4522IPWR Maximum Ratings & Electrical Characteristics
| Amplifier Type | Fully Differential Amplifier (FDA) |
| Channels | 2 |
| Bandwidth (-3 dB, G=1) | 95 MHz |
| Gain Bandwidth Product | 95 MHz |
| Slew Rate | 100 V/us |
| Input Voltage Noise | 4.6 nV/rtHz |
| Quiescent Current per Channel | 1.1 mA |
| Supply Voltage Range | 2.5 V to 5.5 V (single supply) |
| Input Common-Mode Range | Includes negative rail |
| Output Type | Rail-to-rail output |
| Harmonic Distortion | -110 dBc at 1 MHz |
| Offset Voltage | 0.5 mV |
| Output Current | 55 mA |
| Power-Down Current | 0.5 uA |
| Operating Temperature | -40C to +125C |
| Package | 16-TSSOP (PW) |
| Mounting Type | Surface Mount |
THS4522IPWR 16-tssop (pw) Pin Configuration Guide
Complete pinout information for THS4522IPWR (16-tssop (pw) package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for THS4522IPWR.
Refer to the datasheet for full pin configuration.
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
THS4522IPWR is suitable for 6 applications: High-Precision ADC Driving, Portable and Battery-Powered Instruments, Industrial Process Control and PLC Analog I/O, Medical Instrumentation and Patient Monitoring, Test and Measurement Equipment, Active Differential Filtering.
High-Precision ADC Driving
The THS4522 is purpose-built as an ADC driver: its fully differential architecture suppresses even-order harmonics (-110 dBc at 1 MHz) and rejects common-mode noise, directly improving SNR at the converter. The 95 MHz bandwidth supports 16-bit ADCs sampling at hundreds of kSPS to low MSPS, while the output common-mode (VOCM) pin allows level shifting to match the ADC reference midpoint. Placed directly before the ADC input with a small RC filter, it delivers balanced differential signals from a single-ended source; the 1.1 mA per channel budget keeps the analog front end within a few milliwatts, ideal for low-power acquisition systems.
Recommended
Portable and Battery-Powered Instruments
With 1.1 mA per channel quiescent current and a power-down mode reducing consumption to 0.5 uA, the THS4522 suits battery-operated handheld meters, data loggers, and wireless sensor nodes. Its 2.5V to 5.5V single-supply operation runs directly from a Li-ion cell or 3.3V rail without a negative supply, and the rail-to-rail output preserves usable dynamic range at low supply voltages. During duty-cycled operation, the power-down pin gates the analog front end between measurements, extending battery life substantially compared to always-on FDAs while maintaining fast wake-up for periodic sampling.
Recommended
Industrial Process Control and PLC Analog I/O
The THS4522's -40C to +125C industrial temperature rating and ground-sensing input (common-mode includes the negative rail) make it a strong fit for 4-20 mA loop receivers, sensor conditioners, and PLC analog input cards. The differential output drives precision delta-sigma ADCs with high common-mode rejection in electrically noisy factory environments, while the 4.6 nV/rtHz noise floor resolves millivolt-level thermocouple and bridge sensor signals. Dual channels per TSSOP-16 package halve board area versus single-channel FDAs, increasing channel density in multi-loop I/O modules.
Recommended
Medical Instrumentation and Patient Monitoring
Low power, low noise, and differential signaling are all critical in medical front ends such as biopotential amplifiers, blood-analysis instruments, and portable patient monitors. The THS4522's 4.6 nV/rtHz input noise preserves microvolt-level physiological signals, and the fully differential path rejects 50/60 Hz mains interference common in clinical environments. Single 3.3V operation with rail-to-rail output accommodates small signal swings near the rails, and battery isolation schemes benefit from the minimal 2.2 mA total analog current draw of the dual-channel device.
Recommended
Test and Measurement Equipment
Bench instruments, oscilloscope front ends, and automated test systems use the THS4522 to convert single-ended signals to differential for high-resolution converters. The 95 MHz bandwidth supports megahertz-range signal chains, and -110 dBc distortion at 1 MHz maintains measurement fidelity in the first Nyquist zone. The VOCM input lets the instrument firmware re-center the differential output for different ADC references, adding flexibility across product variants. Rail-to-rail output maximizes converter input range utilization on a single 5V rail, simplifying supply architecture.
Recommended
Active Differential Filtering
The THS4522 implements fully differential multiple-feedback (MFB) low-pass and band-pass filters ahead of ADCs, providing anti-aliasing with gain in one stage. Unlike single-ended Sallen-Key designs, a differential MFB filter using the THS4522 rejects common-mode noise and even-order distortion while defining both filter response and output common-mode independently via the VOCM pin. The 95 MHz gain bandwidth comfortably realizes cutoff frequencies up to a few megahertz with adequate Q accuracy, and precision 1% resistors plus C0G capacitors maintain the transfer function across temperature in industrial conditions.
Recommended
Recommended Products Summary
Engineering reference data for THS4522IPWR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | THS4552IPWR | THS4532IPWR | THS4524IPWR |
|---|---|---|---|---|
| Package | 16-TSSOP (PW) | 16-TSSOP (PW) - same | 16-TSSOP (PW) - same | 16-TSSOP (PW) - same, quad pinout |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Channels | 2 | 2 | 2 | 4 |
| Bandwidth (G=1) | 95 MHz | 150 MHz | 50 MHz | 95 MHz |
| Input Noise | 4.6 nV/rtHz | 3.3 nV/rtHz | 5 nV/rtHz | 4.6 nV/rtHz |
| Quiescent Current per Channel | 1.1 mA | 1.35 mA | 0.85 mA | 1.1 mA |
| Supply Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| Distortion (1 MHz) | -110 dBc | -123 dBc HD2 | [DATA_NEEDED] | -110 dBc |
| Power-Down Feature | Yes (0.5 uA) | Yes (per-channel) | Yes | Yes |
Key Differentiators
- Industry-leading low power in its bandwidth class (vs THS4552IPWR)
- Dual-channel integration halves board area (vs THS4521)
- Power-down for duty-cycled systems (vs ADA4940-2)
Design Notes
Place 0.1 uF ceramic decoupling capacitors within 2 mm of each VCC pin, with a bulk 10 uF capacitor nearby per TI's THS452x datasheet layout section. Use a solid ground plane under the amplifier, keep the feedback loop area minimal by routing feedback resistors on the top layer, and do not route switching signals beneath the input traces. Match the two feedback networks (gain-setting resistors) for best differential balance and CMRR.
The input common-mode range includes the negative rail but extends to only about VS+ minus 1.3 V, so verify the source's common-mode against the closed-loop gain required. The VOCM pin must be driven from a low-impedance source (such as an ADC VCM output) or bypassed; leaving it floating causes uncontrolled output common-mode. Power-down pin polarity must be observed - consult the datasheet logic table before connecting to a GPIO.
Use 0.1% or matched (better than 0.5%) feedback resistors to preserve the -110 dBc distortion capability; resistor mismatch converts differential distortion into common-mode artifacts and degrades CMRR. Keep gain-setting resistor values in the 500 ohm to 1.5 kilo-ohm range to balance noise (low values) against loading (high values), and add a small RC (10-50 ohm + 10-100 pF) between FDA output and ADC input for stability with converter input capacitance, per TI application section SBOS539 layout guidance.
Compliance Information
RoHS and lead-free status per standard TI PW-package offering; detailed REACH/halogen status not present in provided data.
