New Product Bulletin Input/Output Full Swing OpAmps for Motion Sensors BD5291 Series High CMMR ensures ultra-precise signal amplification, while low 1.7V operation and input/output full swing mode results in superior performance Product Outline SSOP5 These opamps feature a Common-Mode Rejection Ratio (CMRR) of 70dB (min), enabling high-accuracy amplification of ultra-small signals. This makes them ideal for sensor amp applications for acceleration (shock), angular velocity, pressure, and more. In addition, unlike conventional input/output full-swing opamps that can operate only as low as 1.8V, the BD5291 series supports operation from 1.7V, providing a greater margin against supply voltage fluctuations in 1.8V systems. VSOF5 ■ Applications ■ Product Comparison Supply Input/Output Voltage Range Range VDD [V] [V] Part No. CMRR (Min) [dB] Input Offset Voltage (Max) [mV] 70 ±2.5 SSOP5 (2.9x2.8x1.25) BD5291G 1.7 to 5.5 Ideal for sensor amp applications for motion sensing (i.e. acceleration, angular velocity, and pressure in portable gaming systems, smartphones, and tablet PCs. Also suitable for general use, such as microphone amps and active filters. Package [mm] 0 to VDD VSOF5 (1.6x1.6x0.6) BD5291FVE 1.8 to 5.5 Conventional 0 to VDD 45 ±9 SSOP5 (2.9x2.8x1.25) : Under development ■ Combining ease-of-use with high accuracy signal amplification 10 1.2 Output Voltage Comparison 1.1 (At Low Voltages) 8 VDD=1.8V Common-Mode Common-Mode VSS=0V Input Input Range Range Comparison Comparison 6 0.9 BD5291G Linearity maintained even at low voltages Offset Voltage [mV] Output Voltage [V] 1.0 0.8 0.7 0.6 0.4 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 BD5291G Very little change vs. common-mode input 0 -2 -4 -6 Conventional Full Swing Product Small operating margin below 1.7V 0.5 4 Common Common-Mode Mode Input Rnage Range Conventional Product Significant change Poor CMRR -8 -10 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 1.9 2.0 Common-Mode Input Voltage [V] Supply Voltage [V] Easier to use with low-voltage operation and input/output full-swing mode Enables input/output full-swing operation at a supply voltage of 1.7V. This makes it possible to maintain a wide dynamic range, even at low voltages. Also, sufficient operating margin is ensured at 1.8V, contributing to lower application voltages. High Accuracy Signal Amplification The offset voltage change point at the differential input stage does not exist, increasing the minimum Common-Mode Rejection Ratio (CMRR) from the conventional 45dB to 70dB. This minimizes errors due to common-mode signals that appear at the output, ensuring high-accuracy signal amplification. 10th October,2013. .56F6751E 10.2013