Electronic Components Datasheet Search |
|
BA3837 Datasheet(PDF) 10 Page - Rohm |
|
BA3837 Datasheet(HTML) 10 Page - Rohm |
10 / 11 page •Operation notes (1) The example in the diagram “Application example” is recommended with confidence. However, be sure to comply with these precautions and verify characteristics during actual use. Also, when changing an attached circuit constant, be sure to allow sufficient margins by taking into account both static and transient characteristics, including varia- tion in these ICs and the attached components. (2) The low pass filter cutoff frequency is determined by the internal circuitry and by C6 and C7 in Fig. 1. With the constant used in Fig. 1, the cutoff fre- quency (fc) is roughly 150Hz. This cutoff frequen- cy can be changed by changing C6 and C7. When C6 is multiple a, and C7 is multiple b, respectively, the cutoff frequency is calculated thus: (3) For the gain and relative phase of the input pin (LIN, RIN, MICIN and FK) inputs and output pin (LOUT, ROUT and TK) outputs, refer to “Gain and relative phase,” on page 2 / 10. (4) Electrical characteristics are measured at a load resistance (RL) of roughly 100k Ω. As using an extremely low load resistance (below 10k Ω) will result in slight variation in maximum output voltage and total harmonic distortion, caution must be used when designing connections with the subse- quent stage. (5) The pin 7 bias voltage is roughly Vcc / 2. Because this is also the input and output pin voltage, select coupling capacitor polarity according to relative potential and the characteristics of the compo- nents to which the coupling capacitor is to be con- nected. (6) When outputting L + R from LOUT and ROUT in an application in which the key controller is left unconnected, attach a 10 µF electrolytic capacitor between pins 4 and 5, with pin 5 being positive (L + R mode: ABC = 111). (7) Connecting a capacitance load to pin 5 (TK) of BA3837 / F can worsen noise characteristics. When connecting a capacitance load higher than 10 µF, insert 1kΩ in series (Figs. 1 and 2). The pin 5 output impedance is roughly 5 Ω (1kHz). In the BA3838F it is roughly 400 Ω (1kHz). (8) The vocal fader works by canceling out the syn- chronous component of the signal, leaving the low components in place. Consequently, the vocal fader may not be very effective with certain recordings. (9) In cases where output DC differential can cause noise when switching between modes, use a time constant for the timing of control pin switching, or take some other measure. (10) Operating supply voltage may vary according to ambient temperature. Using this IC outside the recommended supply voltage range may result in increased crosstalk or mute attenuation. 10 Multimedia ICs BA3837 / BA3837F / BA3838F POWER SUPPLY VOLTAGE : VCC (V) 0 2 4 6 8 101214161820 4 3 2 1 5 Fig. 3 IQ vs. VCC characteristics (BA3837 / F) POWER SUPPLY VOLTAGE : VCC (V) 0246 8 10 12 14 16 18 20 4 3 2 1 5 Fig. 4 IQ vs. VCC characteristics (BA3838F) FREQUENCY : f (Hz) 10 100 1K 10K 100K 40 20 14 0 – 20 – 40 – 60 Fig. 5 SV vs. frequency characteristics •Electrical characteristic curves The value of Q is: Q = (Currently, Q 1) 1 2 C7 C6 150 ab (Hz) fc = |
Similar Part No. - BA3837 |
|
Similar Description - BA3837 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |