Phys 105
Special Purpose Chips/IC’s
11/10/09
Introductory Notes:
Integrated Circuit Nomenclature: each manufacturer has an alpha prefix, followed by a number.
Many manufacturers may make the same part, after the original patent has expired. For example,
LM741 and AD741 are the same opamp, manufactured by National Instruments and Analog
Devices, respectively. They are entirely interchangeable. See the attached Phys 105 Parts
Inventory list for a key to the main ones.
Datasheets for the parts listed here are posted on Coursework, or can be accessed directly at
http://www.stanford.edu/class/archive/physics/physics105/physics105.2002/datasheets/ Note
there are several subcategories which are mostly self-explanatory. The ones that aren’t: a)
Optoelectronics: light sources (LED’s) and detectors (phototransistor). Our phototransistor is the
SDP-8405. There is also on SDP-8406 which is equivalent, but is a flat, rather than cylindrical,
geometry. b) Linear IC’s: in electronics, linear = analog , meaning most of the IC’s you will use.
1. 7555 or TS555 timer – the most popular timing chip around, very flexible. Can be made
to oscillate, pulse, or simply time things. The LM555 or NE555 are BJT versions.
Improved, CMOS(FET) versions are: usually noted 7555 (we have the ICM Intersil
version), but there are also LMC555 and TS555 in the lab. Use the CMOS version.
Operation is explained in Section 5.14, Horowitz and Hill (the big reference), p. 286ff.
The inputs to this chip are digital – you give them a hi or lo signal. However, the
definitions of hi and lo are:
a. Hi = >2/3 VDD where VDD is the positive rail, in digital CMOS-speak
b. Lo = <1/3 VDD
So when the spec sheet speaks of a negative-going pulse, it means going from high to
low; it does not mean going from positive to negative voltage. IMPORTANT: do
not give it an input below ground – it will permanently lock up the gates inside and
be useless, even though it won’t look fried from the outside.
See Class/Lab 10 in your Lab Manual, esp Lab parts 10-3, 10-4
2. DG403 Analog Switch: the chip of choice when using a digital signal to turn an analog
signal on/off, such as you need to do in the Design Project. This is a dual SPDT switch.
Dual means two separate switches on one chip, SPDT = single pole, double throw – the
switch opens one set of contacts and simultaneously closes another. We also have quad
(DG413) and single (419) versions. The single is smaller and saves real estate on the
breadboard if you only need one switch.
See Lab Manual, Class 11, p246, and Lab 11-1B p 259 to learn how to use it.
3. ICL 8038 Function generator on a chip build your own oscillator
4. LM358 Single Sided Op Amp – for battery operation – needs only a (+) rail
5. LM3915/3916 LED Display driver – takes an analog input and drives an LED “ladder”
display, below. Higher input, more LED’s are lit. You’ve seen it before.
6. DC-10EWA 10 LED’s in a ladder display. We also have different colors.
7. AD633 4-quad multiplier – for AM modulation – the proper way to multiply two signals.
Also used for demodulation at the receiver. 4-quad means either signal can be positive or
negative, i.e. in any quadrant. This was not true of your FET modulator in Lab 6.
8. AD622 Difference Amplifier, also called an Instrumentation Amp, a good way to
subtract two signals.
9. LM386 Audio Power Amplifier a complete amplifier on a chip. Takes a (very small)
input, amplifies it so it can drive an 8 ohm speaker. If you use this, change your speaker
to an 8ohm version.
10. Dual/Quad chips: –multiple opamps or comparators on one chip – saves real estate on
your board:
a. LM348, HA4741: quad 741
b. LF412/LF347: dual/quad 411
c. LM319/339: dual/quad 311
d. NE558: quad 555 timer (BJT)
11. 7-segment display: digital digits are formed from 7 --count ‘em -segments, either LED’s or LCD’. A chip that drives a 3-digit 7-segment display is the
ICL7107. Takes an analog voltage input and has 21 outputs for the 3 digits. Doubleblack-diamond tricky to use.
12. Power Transistors: 2N4401/03, TIP31/32, TIP41/42 - NPN/PNP pairs for driving the
speaker. If you do a push pull or other transistor follower, don’t use the 2N3904/3906 –
these don’t have enough oomph.
13. 1N914/1N4148 Diodes – use these if you need a diode that can follow your audio signal.
Called “signal” diodes, they’re designed for low power and high frequencies. The
1N400X diodes you used earlier in the course are called rectifiers, and are for higher
power and low frequency. In the diode world, signal diodes are the fast, sleek race
horses, rectifiers are the heavy mules.
14. Sample and Hold/Peak Detector – not a chip but a circuit design that will save the highest
value of a voltage until you reset it. See Lab Manual Ch 11 and Lab 11-5
Phys105 Parts Inventory
12-Nov-09
$ = try to be
a little careful
with these
IC's
$
$
$
$
$
$
$
$$
$$
$
$$
$$
LM
LM
LM
LM
LM
LF
LM
LF
LM
LM
DG
LF
LF
DG
DG
LM, NE
TS, LMC
LM
LM
NE
AD
AD
LM, AD
MC
LM, MC
LM
LM
LM
HA, RC, uPC
ICM
ICM
ICL
ICL
SN
311
319
324
331
339
347
348
356
358
386N-3
403
411
412
413
419
555
555
565
566
558
622
633
741
1455
1496
3909
3915
3916
4741
7555
7556
7107
8038
74143
comparator
dual comparator
quad BJT op amp--single supply (battery)
voltage controlled oscillator (VCO)
quad comparator --single supply (battery)
quad 411 (JFET op amp)
quad 741 (BJT op amp)
JFET Op amp
dual BJT op amp--single supply (battery)
audio power amplifier. 0.5W
CMOS Analog Switch -- dual
JFET Op amp
dual 411
CMOS Analog Switch -- quad (SPST)
CMOS Analog Switch -- single (SPDT)
Timer (BJT--see 7555 for better CMOS version)
CMOS version of 555
PLL (phase-locked loop)
VCO (Voltage Controlled Oscillator)
Quad timer (BJT)
Instrumentation amplifier (difference amp)
analog multiplier
Op Amp (also HA 17-741)
same as 555
Balanced Modulator/Demodulator (for AM)
LED Flasher
LED display driver
LED display driver
quad 741
CMOS Timer (also TS555, LMC555)
Dual 7555
7-seg LED driver, A/D converter
function generator on a chip
7-seg display driver, BCD
Discontinued (but still around)
LM
710 OpAmp comparator
IC Mfg'r. Codes:
LM/LF— National Semiconductor: www.national.com
ICL/ICM, CA, CD — Intersil: www.intersil.com (CA is old RCA designation)
HA — Harris, now part of Intersil, or Hitachi
MC — www1.motorola.com; some products have been spun off to:
(On Semiconductor, www.onsemi.com/pub/prod)
AD — Analog Devices www.analog.com
NE -- Phillips www-us.semiconductors.phillips.com
Transistors/Diodes
1N
1N
1N
1N
1N
2N
2N
2N
2N
2N
2N
2N
2N
4148,914
4007
4733
4735
4742
2222
3904
3906
5459
5460
5485
4400/01
4402/03
fast signal diode
diode, rectifier
zener 5.1v
zener 6.2v
zener 12v
npn
npn
pnp
n-JFET
p-JFET
n-JFET
npn
pnp
TIP
TIP
TIP
TIP
VP
31C
41C
32C
42C
104
npn power
npn power
pnp power
pnp power
MOSFETn-type
CA 3096
NPN/PNP transistory array
Photodetectors/Light Sources
SDP
Ledtech
Ledtech
Kingbright
Fairchild
TP
BPW
IRD
GE
GE
GE
GE
GE
LB
8405/8406
LT1873-UR-P22
LT0362-25-D61
DC-10EWA
MV59164
104
77
300
47
44
53
57
344
603
45ohm speaker, 0.5W
phototransistor (Honeywell)
Bright Red LED wide angle
Bicolor Red/Green LED
LED Bar graph
Red/Green LED Bar Graph
flat phototransistor
phototransistor (TO-18)
IR detector
incandescent bulb 6V
incandescent bulb 6V
incandescent bulb 12V
incandescent bulb 12V
incandescent bulb (for Wien Bridge)
7-segment display, 3 digit