TP1562
Dual-channel precision op-amp with 50μV offset, rail-to-rail I/O, space-saving solution for multi-channel designs.
Product Overview
Description
The TP1562 is a dual-channel version of the popular TP1561 precision operational amplifier.
It provides two independent high-precision op-amps in a single package, saving board space and reducing cost for multi-channel applications.
With the same excellent electrical characteristics as TP1561, it is ideal for differential amplifiers, active filters, and multi-sensor systems.
Product Series
TP
Primary Application
Differential amplifiers
Key Features
- Dual precision op-amps in one package
- Ultra-low offset voltage: 50μV max
- Rail-to-rail input and output
- Low noise: 25nV/√Hz at 1kHz
- High CMRR: 110dB
- AEC-Q100 qualified
Specifications
| Offset Voltage | 50μV max |
|---|---|
| Offset Drift | 0.5μV/°C |
| Bandwidth | 2.5MHz |
| Slew Rate | 1.5V/μs |
| Supply Voltage | 2.5V to 5.5V |
| Quiescent Current | 450μA per channel |
| Package | SOIC-8, MSOP-8 |
Applications
Differential amplifiers
Electronic system design
Multi-channel sensor conditioning
Sensor signal conditioning
Active filters
Electronic system design
Instrumentation amplifiers
Electronic system design
Current sensing circuits
Electronic system design
Bridge amplifiers
Electronic system design
FAE Expert Insights
"Based on extensive field experience, this product delivers excellent performance across various operating conditions. The design incorporates proven architecture with robust protection features. Customers consistently report high satisfaction with reliability and ease of integration."
The TP1562 stands out for its reliability and performance in real-world applications.
— Senior FAE Team, BeiLuo
Frequently Asked Questions
How good is the channel matching?
The TP1562 offers excellent channel-to-channel matching with typical offset voltage matching of 100μV and drift matching of 1μV/°C. This makes it ideal for differential amplifier configurations where matching is critical for common-mode rejection.
Good channel matching for differential applications. Use in instrumentation amplifier configurations.
What is the advantage of dual op-amp vs two single op-amps?
The TP1562 dual op-amp offers several advantages over using two single TP1561s: Reduced board space (one SOIC-8 vs two SOT23-5s), Lower cost (typically 20-30% savings), Better channel matching (fabricated on same die), Guaranteed thermal tracking (both channels at same temperature), Simplified BOM and inventory. The trade-off is less flexibility in placement and shared power supply.
Use TP1562 for dual-channel designs to save space and cost. Use TP1561 for single-channel or distributed designs.
Can I use TP1562 for active filter designs?
Yes, TP1562 is excellent for active filter designs. Both channels can be used to create second-order filters (Sallen-Key, multiple feedback topologies). The 2.5MHz bandwidth supports filters up to about 200kHz. The low offset ensures minimal DC error, and the rail-to-rail output maximizes dynamic range. One package can implement a complete second-order filter or two first-order filters.
One TP1562 can implement a complete second-order active filter. Good for anti-aliasing and signal conditioning.
What is crosstalk between channels?
The TP1562 features excellent channel isolation with crosstalk typically better than -80dB at 1kHz. This means a 1V signal on one channel creates less than 0.1mV interference on the other channel. The high isolation ensures independent operation of both amplifiers, making TP1562 suitable for sensitive multi-channel applications like instrumentation amplifiers.
-80dB crosstalk excellent for most applications. Channels are well isolated.
How do I configure TP1562 as an instrumentation amplifier?
A 3-op-amp instrumentation amplifier can be built using two TP1562s (4 op-amps total) or one TP1562 plus one TP1561. Configuration: First stage - two op-amps as differential input buffers with gain, Second stage - one op-amp as differential amplifier. The high CMRR of TP1562 (110dB) provides excellent common-mode rejection. Use precision resistors (0.1%) for best CMRR.
Use two TP1562s or TP1562+TP1561 for 3-op-amp instrumentation amplifier.