COSINA333MRB

Based on official COSINE (Coresine) distributor product pages and public technical documentation:

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**Description**
- Micro-power, zero-drift precision instrumentation amplifier
- Rail-to-rail input and output (RRIO) operation
- Gain set from 1 to 1000 with a single external resistor
- Housed in MSOP-8 surface mount package
- **Product Status:** Obsolete / End of Life (EOL)

**Features**
- Low offset voltage: 25 µV (max)
- Zero-drift: 0.05 µV/°C
- Low quiescent current: 70 µA
- Low input bias current: 200 pA (max)
- Rail-to-rail input and output (RRIO)
- Operating supply voltage range: 1.8 V to 5.5 V
- -3 dB bandwidth: 250 kHz
- Slew rate: 0.25 V/µs
- Unity-gain stable
- No phase reversal
- Extended temperature range: –40°C to +125°C
- Available in MSOP-8 and SOP-8 packages
- RoHS compliant

**Key Specifications** (Typical @ 25°C)
- Number of Channels: Single
- Supply Voltage (Single): 1.8 V to 5.5 V
- Supply Voltage (Dual): ±0.9 V to ±2.75 V
- Quiescent Current (Iq): 70 µA
- Input Offset Voltage (Vos): 25 µV (max)
- Input Offset Voltage Drift (Vos TC): 0.05 µV/°C (typ.)
- Input Bias Current (Ib): 200 pA (max)
- Input Offset Current (Ios): 3 pA
- Common Mode Rejection Ratio (CMRR): 120 dB
- Power Supply Rejection Ratio (PSRR): 130 dB
- Gain Bandwidth Product (GBW): 250 kHz
- -3 dB Bandwidth: 250 kHz
- Slew Rate (SR): 0.25 V/µs
- Output Current: 50 mA
- Voltage Noise Density (eN): 50 nV/√Hz @ 1 kHz
- Rail-to-Rail: Input and Output
- Operating Temperature: –40°C to +125°C
- Package / Case: MSOP-8

**Alternative Part Numbers** (Reference only – please verify with manufacturer)
- COSINA333MRA (MSOP-8, similar specifications)
- INA333AIDGKR (TI – comparable instrumentation amplifier)
- INA333AIDGKT (TI – comparable instrumentation amplifier)

**Applications**
- Medical instrumentation
- ECG and thermistor sensor amplifiers
- Data acquisition systems
- Thermocouple amplifiers
- Bridge amplifiers
- Pressure sensors
- Portable and battery-powered devices
- Industrial process control

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> **Note:** All parameters are subject to the official COSINE (Coresine) COSINA333MRB datasheet. Specifications are typical values and may vary with operating conditions. This product is obsolete – not recommended for new designs. Please verify all specifications with the manufacturer‘s official documentation before use.