<<Go Back to Chip Location Reference


<<Previous Chip

IDM MOD HOME

Next Chip>>

L12, DS1267 Dual Digital Potentiometer

Pin #

Pin Description

Circuit Configuration

IDM Function

1

VB

Common GND

DIG-POT Substrate GND Ref

2

NC

NC

Not Used

3

H1

Common GND

Hard-wired to GND

4

L1

Supplied from (L14-P14)

Adjustable gain

5

W1

Returned to (L14-P13)

Signal Feedback (adj gain)

6

/RST

Driven by (L8-P25)

Potentiometer hardware-reset

7

CLK

Driven by (L8-P24)


8

GND

Common GND

Power Supply GND

9

DQ

Driven by (L8-P23)


10

COUT

Driven by (L8-P22)


11

L0

Common GND

Hard-wired to GND

12

H0

Supplied from (L16-P6,8)

2.5 Volt Reference

13

W0

Supplies (L14-P5)

Adj bias voltage out (0-2.5 volts)

14

SOUT

NC

Not Used

15

NC

NC

Not Used

16

VCC

Power 5VDC

5VDC Power Supply

<<Previous Chip

IDM MOD HOME

Next Chip>>


This is a section of the IDM worth a second look. The controller can adjust the amount of current delivered to the injectors. Consider locations 14 and 16 as well as they all combine to form the control which has a lot of potential for tweaking.There are quite a few methods in which we can trick the IDM into either adding or subtracting current from the injectors. This goes hand to hand with the resistor mod to increase voltage. And the same holds true for this mod, a simple resistor can be changed. This one has worked its way up on my personal “To do” list. If you have the capabilities check this out for yourself. Though my documents are pretty sketchy and leave a lot to be desired you should be able to use my work as a frame work to save a hell of a lot of time.