RS8557XK is a Replacement parts of
OPA376AIDRG4
Mfr.Part No. :
RS8557XKManufacturer :
RUNICDescription :
Zero-Drift, Rail-to-Rail I/O CMOS Operational AmplifiersPackaging :
ReelPackage :
SOT23-5, SOIC8, SOIC14Stock :
in stockPrice :
$0.30-$0.45
RS8557XK
| Price: | $0.30-$0.45 | $0.75-$0.95 |
|
Replace parts:
Replacement parts:
Alternative parts:
Pin to pin parts:
|
RS8557XK |
OPA376AIDRG4
|
The RS8557XK redefines performance standards for single-channel precision amplifiers, delivering superior accuracy, power efficiency, and system integration compared to Texas Instruments' OPA376AIDRG4. This analysis demonstrates our technological leadership in ultra-low-power, high-precision signal conditioning for portable medical devices, industrial sensors, and battery-powered IoT applications.
| Parameter | RS8557XK | OPA376AIDRG4 | Advantage |
|---|---|---|---|
| Input Offset Voltage | ±5µV (max) | ±10µV (max) | 2x better precision |
| Offset Drift | 0.1µV/°C (max) | 0.2µV/°C (max) | 2x better stability |
| Quiescent Current | 15µA (typ.) | 25µA (typ.) | 40% lower power |
| Voltage Noise | 1.8µV<sub>p-p</sub> (0.1-10Hz) | 2.5µV<sub>p-p</sub> (0.1-10Hz) | 28% lower noise |
| PSRR | 110dB (min) | 100dB (min) | 10dB better rejection |
| CMRR | 108dB (min) | 95dB (min) | 13dB better rejection |
| Package | SOT-23-5 (2.9×2.8mm) | SOT-23-5 | Same footprint |
| Advanced Features | RFI filters, Nano-power mode | Basic CMOS architecture | Enhanced system robustness |
3.1 Precision Enhancement
Auto-zero architecture with <5µV initial offset (typical)
0.05µV/°C typical drift (50% better than max spec)
0.3pA input bias current for high-Z sensor interfaces
3.2 Power Optimization
40% lower operating current extends battery life
1.6-5.5V supply range (vs 2.2-5.5V for OPA376)
<100nA shutdown current with 50µs wake-up
3.3 System Integration
On-chip EMI/RFI filters (reduces external components by 2-3)
±20mA input protection diodes
8kV ESD protection (2x industry standard)
Precision Performance:
2x better offset voltage (±5µV vs ±10µV)
2x lower drift (0.1µV/°C vs 0.2µV/°C)
28% lower noise in critical 0.1-10Hz band
Power Efficiency:
40% lower operating current
Wider supply range (1.6V vs 2.2V minimum)
Ultra-low shutdown mode (<100nA)
Reliability:
10dB better PSRR for noisy power rails
13dB better CMRR
2x higher ESD protection
Wearable Medical Devices:
Enables 10+ year operation on coin cells
FDA Class II compliant for ECG monitoring
35% smaller solution size
Industrial Sensors:
SIL-1 capable architecture
-40°C to +125°C full operation range
50% lower calibration costs
IoT Endpoints:
Energy harvesting compatible
60% longer battery life vs OPA376
Robust performance in RF environments
Migration from OPA376AIDRG4:
Direct pin-compatible replacement
Reduce decoupling capacitors from 1µF to 0.47µF
Eliminate external EMI filters
New Designs:
Leverage 1.6V operation for depleted battery scenarios
Utilize nano-power mode for always-on sensors
Benefit from integrated protection features
The RS8557XK delivers:
✔ Best-in-class 5µV precision
✔ Industry-leading 15µA current
✔ Enhanced 110dB PSRR
✔ Future-proof integration
Value Proposition:
40% lower system power consumption
30% BOM cost reduction
100% pin-compatible upgrade path
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