Attention to Internet Explorer users: ROHM website does not recommend browsing in IE 11. Please use latest browser to ensure the best performance on ROHM website.
The BD5632NUX, BD5634NUX, and BD5638NUX are fixed gain types, but the gain can be reduced with an external resistor. The gain setting is calculated by the following formula.
Gain = 20×log|Rf / (Rs+Ri)|+6dB(BTL)
The internal resistors Ri are 100kΩ (BD5632NUX), 50kΩ (BD5634NUX), and 25kΩ (BD5638NUX), and the feedback resistor Rf is 100kΩ for each.
For the BD5638NUX, when external resistor Rs = 0Ω, Gain = 18dB.