CA3256 データシートの表示（PDF） - Intersil
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CA3256 Datasheet PDF : 11 Pages
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CA3256
Electrical Specifications TA = 25oC, V+ = 12V, VLED = 12V, V- = GND, Pin 4 = GND, Feedback Switch Closed, VHIGH = 9V, VLOW = 3V
(See Figure 1), Unless Otherwise Specified
INPUTS
CHANNEL SWITCH CONTROL
PARAMETERS
CH 1 CH 2 CH 3 CH 4 CH 5 A
B
C ENABLE NOTE 6
TEST
PIN 15 PIN 17 PIN 1 PIN 3 PIN 13 PIN 16 PIN 18 PIN 7 PIN 6 PIN# MIN TYP MAX UNITS
Supply Current,
VLED = 0V
0V 0V 0V 0V 0V 3V 3V 3V
3V
14
10 16 22 mA
Dual Supply Current
0V 0V 0V 0V 0V 0V 0V 0V
7V
14/5 10 20 26 mA
V+ = +7V, V- = -5V
Amplifier Output
Voltage, Open Loop
VLED = 0V
0V 0V 0V 0V 0V 3V 3V 3V
Amplifier Output
0V 0V 0V 0V 0V 3V 3V 3V
Voltage, Closed Loop,
VLED = 0V
IOUT (MAX) (Source)
0V
0V
0V
0V
0V
3V
3V
3V
Open Loop
3V
9
6 8.5 10 V
3V
9
4.8 5.1 5.4 V
3V
9
- -70 -25 mA
Note 4
IOUT (MAX) (Sink)
Open Loop
0V 0V 0V 0V 0V 3V 3V 3V
3V
9
10 16 - mA
Note 5
Input Leakage
Channel 1-5
3V 3V 3V 3V 3V 3V 3V 3V
3V 1, 3, 15, -15 5 15 nA
17
Channel Control
Input A, B, C,
Enable Leakage
0V 0V 0V 0V 0V
Measure at 3V, 9V each;
Enable and Channel
Switching Control Inputs
6, 7, 16, -20 10 20 nA
18
LED Off Voltage, VOFF 0V
0V
0V
0V
0V
Select Channel 0-5
2, 10, 11.97 11.99 -
V
11, 12
LED On Voltage, VON 0V
0V
0V
0V
0V
Select Channel 0-5
2, 10, - 0.1 0.3 V
11, 12
Switch Resistance,
RDS
±100µA Input Each Switch,
Channel 1-4 + 5
Select Channel 9V
9V
1-4
RDS Match
Calculation: (Max RDS - Min RDS)/Min RDS
Amplifier Output
0V 0V 0V 0V 0V 0V 0V 0V
7V
Offset, VO, Feedback
Switch Closed
V+ = +7V, V- = -5V
0.8 1.1 1.4 kΩ
-
- 3.6 5
%
9 -100 45 100 mV
Closed Loop Gain
3V 0V 0V 0V 0V 3V 3V 3V
9V
9
-0.5 -0.1 0.5 dB
NOTES:
4. VOUT = +7V.
5. VOUT = +3V.
6. DIP Pinout.
8-4
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