ip4001tf Interpion semiconductor Inc., ip4001tf Datasheet - Page 7

• Manufacturer Part Number: ip4001tf
• Description: 5-ch Motor Drive Ic Semiconductor
• Manufacturer: Interpion semiconductor Inc.

August. 2002
If you want to reduce the total gain of the BTL drive part, use additional series resistor into the
input pin(pin#3, 10,19,25)
You can also increase or decrease the voltage gain of the CH1, CH4 using adjustable pin
(pin#4, pin24) by inserting an external series resistor.
The level shifter changes the direction of the current(Iconv) as the same amount,
The resistor Ra(10.6K) converts current into voltage with the DC offset of Pref.
The power amp has unity gain.
So the total differential voltage gain of the IP4001 is as follows,
and then supply it to the power AMP.
Gain
-
Va
Va
=
=
=
20log
=
=
10.6K x
-10.6K x
(Rev.7)
20log
6.527dB
{[10.6k
2
Vin
x
Vin
10k
-
10k
10.6K
Vref
-
10K
x
Vref
+
Vin
Pr
+
10k
Pr
ef
-
Vref
ef
WWW.INTERPIONSEMI.COM
+
Pr
ef
Vin
- ]
-
[(-)10.6k
5-CH MOTOR DRIVE IC
when
Vref
IP4001
Pref
x
Vin
=
10k
-
VCC1
Vref
+
Pr
2
-
ef
Vbe
]}
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