COS128UA

Based on official COSINE (Coresine) datasheets and authorized distributor product pages:

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**Description**
- 36V precision low-power instrumentation amplifier
- High-precision, low-noise instrumentation amplifier designed for high-accuracy measurement and test equipment
- Features low offset voltage, low drift, and low input bias current
- Housed in SOP-8 surface mount package
- **Product Status:** Reported as discontinued/obsolete by some distributors – please verify with manufacturer before use

**Features**
- Very low offset voltage: 125µV max
- Ultra-low offset drift: 0.2µV/°C
- Low input bias current: 2nA typ.
- Low input offset current: 1nA
- Low noise: 8nV/√Hz @ 1kHz
- High CMRR: 125dB
- High PSRR: 120dB
- Gain bandwidth product: 1.5MHz
- Slew rate: 1V/µs
- Rail-to-rail output
- Wide supply range:
- Single supply: 4.5V to 36V
- Dual supply: ±2.25V to ±18V
- Low quiescent current: 1mA
- Output current: 10mA
- Unity-gain stable
- Input overvoltage protection
- Operating temperature range: –40°C to +125°C
- RoHS compliant and Pb-free

**Key Specifications** (Typical @ 25°C)
- Number of Channels: Single
- Supply Voltage (Single): 4.5V to 36V
- Supply Voltage (Dual): ±2.25V to ±18V
- Gain Bandwidth Product (GBW): 1.5MHz
- Slew Rate (SR): 1V/µs
- Input Offset Voltage (Vos): 125µV max
- Input Offset Voltage Drift (Vos TC): 0.2µV/°C
- Input Bias Current (Ib): 2nA
- Input Offset Current (Ios): 1nA
- Input Voltage Noise Density (en): 8nV/√Hz @ 1kHz
- Common Mode Rejection Ratio (CMRR): 125dB
- Power Supply Rejection Ratio (PSRR): 120dB
- Quiescent Current (Iq): 1mA
- Output Current: 10mA
- Output Type: Rail-to-Rail Output
- Operating Temperature: –40°C to +125°C
- Package / Case: SOP-8

**Alternative Part Numbers** (Reference only – please verify with manufacturer)
- OPA128 (Texas Instruments)
- AD8628 (Analog Devices)
- TL072 (Texas Instruments)
- INA128UA (Texas Instruments)
- INA129UA (Texas Instruments)
- COS128U (SOP-8, same series)
- COS128C / COS128P / COS128PA (different package options)

**Applications**
- Precision measurement and test equipment
- High-accuracy data acquisition systems
- Sensor signal conditioning
- Medical instrumentation
- Industrial process controls
- Strain gauge amplifiers
- Thermocouple amplifiers
- Bridge transducers

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> **Note:** All parameters are subject to the official COSINE (Coresine) COS128UA datasheet. Specifications are typical values and may vary with operating conditions. Please verify all specifications with the manufacturer's official documentation before use.