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| Pin-by-Pin Discussion, and Comparison to the L-17C |
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| Pin # |
Function |
Notes |
Changed?
|
| 1 |
A1 compensation |
(approx 2pF to gnd) |
was to pin 36 |
| 2 |
Positive Input |
|
No |
| 3 |
Do not use |
(Probably not used) |
not in use. |
| 4 |
A1 decouple |
Not necessary |
|
| 5 |
VEE1 |
|
No |
| 6 |
A1 out |
|
No |
| 7 |
VCC1 |
|
No |
| 8 |
S+ |
Also used for another function |
No* |
| 9 |
L1 Adjust |
|
No |
| 10 |
L7 Adjust |
|
No |
| 11 |
Linear Extension |
No 400 ohm to ground needed |
No* |
| 12 |
Gnd3 |
|
No |
| 13 |
L6 Adjust |
New; log comp not needed |
Yes |
| 14 |
VEE3 |
|
No |
| 15 |
S- |
Also used for another function |
No* |
| 16 |
Output DC adj. |
Formerly shorted to gnd |
Yes |
| 17 |
Aux Output |
|
No |
| 18 |
Output |
|
No |
| 19 |
Output Amp In- |
|
No |
| 20 |
Outamp comp |
(~ 5pF to gnd.); don’t use for DC adjust |
No* |
| 21 |
Output Amp In+ |
No R to gnd needed; (1K internal) |
No* |
| 22 |
VEE2 |
|
No |
| 23 |
VCC2 |
|
No |
| 24 |
A3in- |
|
No |
| 25 |
A3 DC Adjust |
|
No |
| 26 |
A3 out |
|
No |
| 27 |
Gnd2 |
|
No |
| 28 |
A3 In+ |
Connect to A2out |
No* |
| 29 |
A2out |
Connect to A3in |
No* |
| 30 |
Gnd1 |
|
No |
| 31 |
A2 in- |
|
No |
| 32 |
A2 in+ |
Connect to A1out |
No* |
| 33 |
A2 comp |
(probably used only for ac comp) |
Yes |
| 34 |
A1out |
New; connect to A2in. |
Yes |
| Do not use Pin 34 to drive >15ma! Use pin 6 for high current drive. |
| 35 |
In - |
|
No |
| 36 |
NC |
Was used for A1 comp |
Yes |
|
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*A “No” with an asterisk means the function is unchanged but the connection is different; e.g. it may now require a resistor to VCC or ground, rather than to VEE or ground, or it may not require a connection at all. |
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14 February 20, 2008 |
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