AS

“АLFA RPAR”

Joint Stock Company ALFA

Riga, Latvia www.alfarzpp.lv; alfa@alfarzpp.lv

2018 v.5

3

AS3340

AS3345

Typical Electrical Characteristics

Parameter

Min.

Typ.

Max.

Units

Frequency Control Range

50K:1

500K:1

-

Exponential Scale Error, Untrimmed

1

-

0.2

1

%

Exponential Scale Error, Trimmed

1

-

0.05

0,3

%

Multiplier Gain Errors

2

-

0.0005

0.008

%/

µA

Tempo Cancellation

3

-150

0

+150

ppm

Oscillator Drift

4

-

±50

±200

ppm

Triangle Buffer Input Current

-

0.3

3

nA

Triangle Waveform Upper Level

4.85

5.0

5.15

V

Triangle Waveform Lower Level

-15

0

+15

mV

Triangle Waveform Symmetry

45

50

55

%

Sawtooth Waveform Upper Level

9.4

10.0

10.6

V

Sawtooth Waveform Lower Level

-25

0

+25

mV

Triangle Output Sink Capability

400

550

750

µA

Sawtooth Output Sink Capability

640

800

1000

µA

Triangle& Sawtooth Output Impedance

5

65

100

150

Ω

Pulse Output Source Capability at +10V

2.8

3.5

4.6

mA

Squarewave Output Levels

-1.8,-0.4

-1.3,0

-0.8,+0.4

V

PWM Input Pin Current

7

.5

1.5

3.5

µA

PWM Input Voltage for 0% Pulse Width

-15

0

+15

mV

PWM Input Voltage for 100% Pulse Width

4.6

5.0

5.4

V

Input Bias Current at Reference and

Control Current Inputs

80

200

400

nA

Tempco of Input Bias Currents

-1000

0

+1000

ppm

Offset Voltage at Reference and Control

Current Inputs

-5

0

+5

mV

Hard Sync Reference Voltage

-1.2

-1.4

-1.5

V

Hard Sync Input Resistance

5

6.3

7.9

K

Ω

Max Capacitor Charge/Discharge Current

400

570

800

µA

Positive Supply Current

4

5

6.5

mA

Positive Supply Voltage Range

+10

-

+18

V

Negative Supply Voltage Range

8

-4.5

-

-18

V

Note 1: This error represents the percentage difference in scale factors (volts per frequency ratio) of the

exponential generator anywhere over the exponential generator current range of 50nA to 100 µA. Most of

this error occurs at the range extremities.

Note 2: This error represents the percentage difference in multiplier gains at any two input currents,

within the range of 20

µA to 180 µA, per µA difference between the two corresponding outputs.

Note 3: This spec represents the difference between the actual tempco of the multiplier output voltage

(expressed relative to the maximum output excursions) and the tempco required to precisely

cancel the tempco of the exponential scale factor (q/KT).

Note 4: The multiplier output is grounded.

Note 5: For exponential generator currents less than 10 µA; above 10 µA, impedance drops to 1

/3 this

value as the highest current is approached.

Note 6: With respect to the hard sync input reference voltage.

Note 7: For PWM control inputs between -1 and +6 volts. This current is significantly greater for inputs

outside of this range.

Note 8: Current limiting resistor required for negative supplies greater than -6 volts.

Specifications subject to change without notice.