SGM8522
Versatile dual op-amp with 3MHz bandwidth and rail-to-rail output for analog processing
Product Overview
Description
The SGM8522 is a versatile dual operational amplifier offering excellent performance for general-purpose analog applications.
With 3MHz bandwidth, 2V/μs slew rate, and rail-to-rail output, it handles a wide range of signal processing tasks.
The low 400μA supply current per channel makes it ideal for battery-powered portable devices.
Product Series
SGM
Primary Application
Active filters
Key Features
- Dual op-amp in single package
- 3MHz gain-bandwidth product
- Rail-to-rail output swing
- Low 400μA supply current per channel
- 2V/μs slew rate
- 30mA output drive capability
Specifications
| Supply Voltage | 2.5V to 5.5V |
|---|---|
| Input Offset Voltage | 2mV (max) |
| Bandwidth | 3MHz |
| Slew Rate | 2V/μs |
| Quiescent Current | 400μA per channel |
| Output Drive | 30mA |
| Package | SOIC-8, MSOP-8, TSSOP-8 |
Applications
Active filters
Electronic system design
Signal conditioning
Sensor signal conditioning
Sensor buffering
Sensor signal conditioning
Audio preamplification
Electronic system design
ADC driver
Motor drive and control systems
FAE Expert Insights
"The SGM8522 is my workhorse dual op-amp for consumer electronics designs. It offers an excellent balance of performance, power consumption, and cost. The 3MHz bandwidth is sufficient for audio and most sensor applications, while the 400μA current draw per channel extends battery life in portable devices. I've used this part in countless active filter designs with consistently good results. The rail-to-rail output is genuine - it drives within 20mV of the rails with light loads."
Versatile dual op-amp with excellent cost-performance ratio
— Jennifer Liu, BeiLuo
Frequently Asked Questions
What is the difference between SGM8521 and SGM8522?
SGM8521 is single-channel while SGM8522 is dual-channel. Both offer identical electrical specifications: 3MHz bandwidth, 2V/μs slew rate, and 400μA current per channel. Choose SGM8521 for single-channel applications or when channel isolation is critical. Choose SGM8522 for dual-channel applications to save PCB space and cost.
Use SGM8521 for single channel, SGM8522 for dual channel applications.
How much capacitive load can SGM8522 drive?
The SGM8522 is stable with capacitive loads up to 500pF without external compensation. For larger loads, use a series resistor. For larger capacitive loads, a small series resistor between the output and capacitor ensures stability. This is important when driving long coaxial cables or ADC sampling capacitors.
SGM8522 handles up to 500pF directly.
What is the maximum output current of SGM8522?
The SGM8522 can source or sink up to 30mA of output current, sufficient for driving most ADC inputs and signal cables. When driving heavy loads, the output voltage swing is reduced due to internal current limiting. For applications requiring higher output current, consider adding a discrete transistor buffer.
SGM8522 provides 30mA drive capability.
Can SGM8522 be used for audio applications?
Yes, the SGM8522 is suitable for audio preamplification with 3MHz bandwidth providing adequate frequency response for audio (20Hz-20kHz). The low distortion and good PSRR ensure clean audio performance. However, for professional audio or high-end consumer audio, dedicated audio op-amps with lower noise may be preferred.
SGM8522 is suitable for general audio applications.
What package options are available for SGM8522?
Available in SOIC-8, MSOP-8, and TSSOP-8 packages. SOIC-8 is easiest to handle, MSOP/TSSOP for compact designs. The SOIC-8 is easiest to handle and solder, suitable for prototypes and low-density boards. MSOP-8 offers smaller footprint for space-constrained designs.
Select package based on PCB space constraints.