TCA240 pinout and a little data

From: Tony Duell <ard_at_p850ug1.demon.co.uk>
Date: Sat Feb 21 16:56:55 2004

Jules Richardson (IIRC) was asking about this chip to repair a classic
computer peripheral (so it is on-topic)...

I can't find it in a databook, but I've found a circuit that uses it --
the 'Head Amplifier Playback' module (board P50) in a Philips VR2020 VCR
[1].It seems to contain 8 NPN transistors and nothing else (at least the
schematic of that board shows the internals of the IC as 8 transistors
only) and consists of 2 identical sections. Each is a long-tailed pair
with a couple more transistors acting as a current sink for the 'tail'.

Anyway, here's a pinout. There may be substrate connections, etc that I
don't know about, and which might matter if you want to design something
round the IC. But this should be enough to understand the circuit the
chip is used in. I assume the chip Jules is looking at is a 16 pin DIL
package.

I'll draw the schematic of half the chip, giving the pin numbers for one
section, with the corresponding pins for the other section in parentheses...


              14 (11) 12 (13)
                o o
                | |
                | |
                / \
              |/ \|
  3 (6) o-----| |-----o 4 (5)
              |\> </|
                 \ /
                 | |
                 +-----+-----+
                       |
                       |
                       /
                     |/
         2 (7) o-----|
                     |\>
                        \
                         |
                         +----------o 1 (8)
                         |
                         /
                       |/
       15 (10) o-------|
                       |\>
                          \
                          |
                          |
                          o
                        16 (9)


-tony
Received on Sat Feb 21 2004 - 16:56:55 GMT