Nonlinear Circuits

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For more information please use the Microelectronic Circuit Design by R.C. Jaeger and T. N. Blalock. 1. Mixed signal circuits. M1. M4. M3. M2. V. REF1. I. IN.
Mixed signal circuits M4

M3

VREF1

IIN M2

VREF2

M1

abs(IIN)

Absolute value module with smother operation at smaller currents

IBIAS

IIN IOUT

1

10

bi-directional current mirror (amplifier)

D

L VS

+ -

C

S

RL

DC-DC boost converter 1

VS

+ -

L1

C1

L2

3

2

S

D

4

C2

RL Czuk DC-DC

Generating reference currents

For more information please use the Microelectronic Circuit Design by R.C. Jaeger and T. N. Blalock

1

Lambda element

I1

I2

I3

Q2

Iout

Q3

Q1

Q4

I2

I3

Multiplier and divider circuit

V I C  I S exp  BE  VT

  

or

I  VBE  VT ln  C   IS 

For more information please use the Microelectronic Circuit Design by R.C. Jaeger and T. N. Blalock

2

I1

Iout

Q2

Q3

Q1

Q4

I2

Iout  I1 I 2 Circuit calculating the geometric average of two input currents I1

I3

Q2

Iout

Q3

Q1

Q4

I3

I12 I3 Circuit which is calculating square of the input current. Iout 

I1+IIN1

I2+IOUT

I2-IOUT

I1-IIN1

V1 Q5

V2 Q3

Q1

I2-IIN2

Q2

Q4

Q6

I2+IIN2

Gilbert four-quadrant multiplier I I I 2  I OUT  I 2  IN 1 IN 2 Therefore one can conclude that I1 I I I I I OUT  IN 1 IN 2 I 2  I OUT  I 2  IN 1 IN 2 I1 I1

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3

DA converters

simple DA converter

First switches are setting the range and second switches add 3 bit accuracy

For more information please use the Microelectronic Circuit Design by R.C. Jaeger and T. N. Blalock

4

R-2R ladder

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5

Inverted R-2R ladder

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6

For more information please use the Microelectronic Circuit Design by R.C. Jaeger and T. N. Blalock

7

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