BD88400GUL
Coupling Capacitorless Headphone Amplifiers
BD88400GUL
Coupling Capacitorless Headphone Amplifiers
BD88□□□GUL是无输出耦合电容的耳机放大器。本IC内置了稳压型电荷泵的负电压产生电路，从电源电压生成直接稳压的负电压。利用正电压和该负电压驱动耳机放大器，以接地电平为基准进行输出。因此，在没有大容量的输出耦合电容的情况下，也可直接连接耳机。据此可以削减成本・电路板面积・元器件高度。另外，由于没有衰减输出耦合电容和输出负载阻抗所产生的低音域信号，能够输出丰富的低音。通过设定增益，基准电压型而具有丰富的产品阵容。
主要规格
特性：
Iq[mA]
2
Ext. Gain
Yes
Gain [dB]
6
Output Type
C-less
Number of Ch
2
Gain [dB]
Variable
Maximum Output [mW,RL=16Ω]
80+80
Maximum Output [mW,RL=32Ω]
60+60
Minimum Load [Ω]
16
Input Type
Analog
THD+N [%,RL=16Ω]
0.006
S/N [dB]
101
Start Up Time [µs]
80
Stand-by Current [µA]
0.1
Power Supply Voltage (Min.) [V]
2.4
Power Supply Voltage (Max.) [V]
5.5
Headphone PSRR[dB]
-80
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
85
Package Size [mm]
2.1x2.1 (t=0.55)
特点：
・单一电源工作:2.4V to 5.5V・大容量无输出耦合电容
・低失真特性
・低消耗电流
・内置负电源电路
・短路保护/过热保护
Reference Design / Application Evaluation Kit
-
- Evaluation Board - BD88400GUL-EVK-001
BD88200GUL/BD88400GUL is output capacitor-less headphone amplifiers. The voltage gain can be change by the external resisters. BD88200GUL has a Ground-Referenced terminal. BD88400GUL doesn’t have a Ground-Reference terminal. BD88200GUL can be used as BD88210GUL/BD88215GUL/BD88220GUL by changing external resisters. BD88400GUL can be used as BD88410GUL/BD8415GUL/BD88420GUL by changing external resisters.
