LM311 & LM393 common mode sensitivity test

LM311 auto-biasing test

LM311 optimal (most sensitive) input voltage offset TEST

LM393 optimal (most sensitive) input voltage offset TEST

LM393 oscillator forcing the input to it's optimal common input voltage offset ... Vee/Vss/-Vs

---

[Eop]

OC OD output voltage divider calculator

extends the ::  LM393 CLM TEST @ Tuesday, March 19, 2019

---

Voltage Divider - Calculator

---

Ø +Vcc │ ┌─┴─┐ │ │ │ R1│ │ │ └─┬─┘ OC ┌────────┐ │ .────┤ R3 ├────█────► Vout │ / └────────┘ │ COMP ►────│• ┌─┴─┐ │ \ │ │ _\/ │ R2│ │ │ │ │ └─┬─┘ │ │ ─┴─ ─┴─ GND

Param.	Input	Set	Value	Verif.
Corr. :				.
ISNK :				.
VCC :				.
VTH :				.
ΔV :				.
UHI = VTH + ΔV :
ULO = VTH - ΔV :
Integrity of the entered data :
R3 (Ω) = ROC = RSNK :	.	.		.
K = R2/R0 = : = VCC / ULO - 1 VCC / UHI - 1		.	.
R2 (Ω) = RLO = = R3 · ( K - 1 ) :	.	.		.
R0 = R2||R3 :		.	.	.
R1 (Ω) = RHI :	.	.		.

---

[Eop]

revised my LM393 CLM-s

using two types of test ::

about ::

---

[Eop]

LM710 from d/s

the previous attempt to make it work (just by principal schematic) failed ... from d/s the magical h_FE seems to be 11 . . . ??? (as it's the same timer as 54x00 74x00 series -- the gained information may be practical in getting these models to work with the d/s specified resistances . . .)

my input sensitivity is a bit poorer than the К554СА2 documentation specifies , but basically it will do

---

note :: even if it takes dual supply and more power than new comparators - then it usually is up to 10 times cheaper for experimental circuits - and someone still may have a storefull of them . . .

---

the h_FE is not matching the 74x00 series

the pages 7,8 have a scope diagram for comparator compared to TTL inverter ::
https://www.analog.com/media/en/technical-documentation/data-sheets/lt1016.pdf

Reproduced experiment ??? ::

---

[Eop]

Improving LM339 + "tunable" osc variant

► the tunable osc. as by selecting the RC net-wk

► the tests that lead to (as by what i've tested so far) "improved" v. of LMx93

► 2MHz - TEST (driven from realistic src. 74HC04 -- 1 gate has just about the power required!?)

---

[Eop]

LM311 Testing for 5V setups

Tests ::

↑↑ !!! Don't follow/assemble these !!! ↑↑

The output speed does NOT much depend on pull up resistor values (below equal 1 kΩ @ 5V)

SPEED/AMPLITUDE TEST

LM393

LM301

---

[Eop]

8-bit ADC experiment

---

Update about component pick

---

[Eop]

TL431 Spice model variants´ TEST

presented as we go
► 1-st

► 2-nd

► 2-nd - in detail

wider range

component level models (sub circuits compared)

the best - upper two are the attempts to achieve better precision×frequency-rejection //// the reverse Vref´s emitter (EB) diode in Rank#(7) is a contemporary relic from an attempt to force the "Hot Start" for U4,U5 . . .

pulse e.g. stepped load response

overall ranking so far ...

? best CLM-s !!! for static operation . . .
. . . for undefined input the U5 e.g. X4 is likely better choice /// might be quite expensive regulator as the RF transistors cost $ 0.2÷1.0 per pcs.  /// (i can't comment nor recommend nor reject the macro models - but usually they are too optimistic !!!)

hi, hi - UPS! seems i used Amps insted of milli-Amps

that re-ranks the rank back to "Static" -- the red box is "for super cool experiments only!!" . . .
. . . so U2 // X1 the best CLM !!!

---

[Eop]

LMxx39 Circus + 750ns & - 900ns Zero Cross

Circus

Ti provided Pspice thingy for LM339 (is annoyingly ▲impractical▲) + (some of the chip names might be erroneous) -- anyway a good question here is why that cfg. doesn't generate "timestep too small" error . . .

Ti LM339 behavioural model as the bottom plot -- interestingly -- the closest match to prev. does not appear to be the right transistor circuit - the LM239 - but instead my experimental design as LMx39 (respectively LM293 and LMx93 in simulation circuit - both are the component level models e.g. the sub circuits) . . .


Cross the Zero +700ns

making the src. (whitch is yet another variant of the Lim.- or the Window comparator) more practical

Cross the Zero -900ns

using the "slope detector" - the right - first occurring comp.-pair signal can be passed to outp (removes the "echo")

[Eop]

LMx39 CLM Test

since the Philips didn't provided the internals we assume it's about LMx39 ! ???

Capabilities . . . ! Optimistic . . .

The next requires a fixed supply , no aging / temperature drift of the components (or very complex / fast auto adjust to . . .)

---

[Eop]

К554СА3 component- versus LM311 behavioural model

null

 

(in simulation) tested up to 2.5MHz
К554СА3 starts operating ?normally below 1MHz

[Eop]