The CMOS operational amplifier is designed for precise signal amplification in smartphones and IoT devices, enabling accurate sensor readings in compact electronics.
ROHM has developed the TLR377GYZ, a compact CMOS operational amplifier between 1.8V and 5V. This op amp is designed to efficiently amplify signals from sensors measuring temperature, pressure, flow rate, and more, making it ideal for use in smartphones and small IoT devices. As these shrinks, the demand for smaller, more precise components increases. The op-amps address this need by providing enhanced low input offset voltage and noise performance in a smaller form factor.
The operational amplifier is suitable for applications such as smartphones and compact IoT devices equipped with measurement sensors. These applications benefit from the enhanced capabilities of this op amp, which ensures precise signal amplification necessary for accurate sensor readings in small, modern electronics.
Traditional op amps face challenges in balancing accuracy with miniaturization because larger transistors, which can reduce input offset voltage and noise, typically require more space. However, op amps overcome this by maintaining low offset voltage—up to 1mV—and reducing flicker noise through advanced process technology. It also achieves ultra-low noise levels, with an input equivalent noise voltage density of 12nV/√Hz, by optimizing resistive components at the elemental level. Additionally, it employs a WLCSP (Wafer Level Chip Scale Package) with a ball pitch of only 0.3mm, reducing its size by approximately 69% compared to traditional models and 46% compared to other compact models.
Some of the key specifications of the TLR377GYZ include:
- Power Supply [V] (+5V=5, ±5V=10): 1.8 to 5.5
- Channel: 1
- Circuit Current (Typ.) [mA/ch]: 0.585
- Input Offset Voltage (Max.) [mV]: 1
- Input Bias Current (Typ.) [nA]: 0.0005
- Slew Rate (Typ.) [V/µs]: 2
- Voltage gain (Typ.) [dB]: 137
- Output current (Typ.) [mA]: 25
- CMRR (Typ.) [dB]: 100
- PSRR (Typ.) [dB]: 95
- Operating temperature [°C]: -20 to 85
The company offers an IC-mounted conversion board to replace SSOP6 packages, facilitating replacement and initial evaluation efforts.
