Philips xr2206 DATASHEETS

...the analog plus company

FEA TURES

 Low-Sine Wave Distortion, 0.5%, Typical
 Excellent Temperature Stability, 20ppm/°C, Typ.
 Wide Sweep Range, 2000:1, Typical
 Low-Supply Sensitivity , 0.01%V, T yp.
 Linear Amplitude Modulation
 TTL Compatible FSK Controls
 Wide Supply Range, 10V to 26V
 Adjustable Duty Cycle, 1% TO 99%

GENERAL DESCRIPTION

TM

APPLICATIONS

 Waveform Generation
 Sweep Generation
 AM/FM Generation
 V/F Conversion
 FSK Generation
 Phase-Locked Loops (VCO)

Function Generator

XR-2206

Monolithic

June 1997-3

The XR-2206 is a monolithic function generator
integrated circuit capable of producing high quality sine,
square, triangle, ramp, and pulse waveforms of
high-stability and accuracy . The output waveforms can be
both amplitude and frequency modulated by an external
voltage. Frequency of operation can be selected
externally over a range of 0.01Hz to more than 1MHz.

ORDERING INFORMA TION

Part No. Package

XR-2206M 16 Lead 300 Mil CDIP

XR-2206P 16 Lead 300 Mil PDIP

XR-2206CP 16 Lead 300 Mil PDIP

XR-2206D 16 Lead 300 Mil JEDEC SOIC

The circuit is ideally suited for communications,
instrumentation, and function generator applications
requiring sinusoidal tone, AM, FM, or FSK generation. It
has a typical drift specification of 20ppm/°C. The oscillator
frequency can be linearly swept over a 2000:1 frequency
range with an external control voltage, while maintaining
low distortion.

Operating

T emperature Range

-55°C to +125°C
–40°C to +85°C

0°C to +70°C
0°C to +70°C

Rev. 1.03

1972

EXAR Corporation, 48720 Kato Road, Fremont, CA 94538  [phone]  [phone]

1

XR-2206

Timing

Capacitor

Timing

Resistors

FSKI

TC1

TC2

TR1

TR2

GND10BIAS

V

CC

12

4

5

VCO

6

7

Current

8

9

Switches

Multiplier
And Sine

Shaper

+1

11 SYNCO

2

STO

AMSI

1

13WAVEA1

14WAVEA2

15SYMA1

16SYMA2

3MO

Figure 1. XR-2206 Block Diagram

Rev. 1.03

2

XR-2206

STO

MO

V

CC

TC1
TC2
TR1

TR2

1
2
3
4
5
6
7
8

AMSI

16 Lead PDIP, CDIP (0.300”)

16
15
14
13
12
11
10
9

SYMA2
SYMA1
WAVEA2
WAVEA1
GND
SYNCO
BIAS

FSKI

161

AMSI

STO

MO

V

CC

TC1
TC2
TR1

TR2

2
3
4
5
6
7

SYMA2

15

SYMA1

14

WAVEA2

13

WAVEA1
GND

12
11

SYNCO

10

BIAS

98

FSKI

16 Lead SOIC (Jedec, 0.300”)

PIN DESCRIPTION

Pin # Symbol Type Description

1 AMSI I Amplitude Modulating Signal Input.
2 STO O Sine or Triangle Wave Output.
3 MO O Multiplier Output.
4 V

CC

5 TC1 I Timing Capacitor Input.
6 TC2 I Timing Capacitor Input.
7 TR1 O Timing Resistor 1 Output.
8 TR2 O Timing Resistor 2 Output.

9 FSKI I Frequency Shift Keying Input.
10 BIAS O Internal Voltage Reference.
11 SYNCO O Sync Output. This output is a open collector and needs a pull up resistor to VCC.
12 GND Ground pin.
13 WAVEA1 I Wave Form Adjust Input 1.
14 WAVEA2 I Wave Form Adjust Input 2.
15 SYMA1 I Wave Symetry Adjust 1.
16 SYMA2 I Wave Symetry Adjust 2.

Positive Power Supply .

Rev. 1.03

3

XR-2206

DC ELECTRICAL CHARACTERISTICS

Test Conditions: Test Circuit of
Unless Otherwise Specified. S

Parameters Min. T yp. Max. Min. Typ. Max. Units Conditions

General Characteristics

Single Supply Voltage 10 26 10 26 V
Split-Supply Voltage
Supply Current 12 17 14 20 mA

Oscillator Section

Max. Operating Frequency 0.5 1 0.5 1 MHz
Lowest Practical Frequency 0.01 0.01 Hz
Frequency Accuracy +1 +4 +2 % of fofo = 1/R1C
Temperature Stability

Frequency
Sine Wave Amplitude Stability
Supply Sensitivity 0.01 0.1 0.01 %/V V

Sweep Range 1000:1 2000:1 2000:1 fH = f

Sweep Linearity

10:1 Sweep 2 2 % fL = 1kHz, f
1000:1 Sweep 8 8 % f
FM Distortion 0.1 0.1 % +10% Deviation

Recommended Timing Components

Timing Capacitor: C 0.001 100 0.001 100
Timing Resistors: R1 & R

Triangle Sine Wave Output

Triangle Amplitude 160 160
Sine Wave Amplitude 40 60 80 60
Max. Output Swing 6 6 Vp-p
Output Impedance 600 600
Triangle Linearity 1 1 %
Amplitude Stability 0.5 0.5 dB For 1000:1 Sweep

Sine Wave Distortion

Without Adjustment 2.5 2.5 %
With Adjustment 0.4 1.0 0.5 1.5 % See

2

Figure 2

open for triangle, closed for sine wave.

1

Vcc = 12V, TA = 25°C, C = 0.01F, R

XR-2206M/P XR-2206CP/D

+5

+13 +5 +13 V

+10 +50 +20

2

4800 4800

1 2000 1 2000

1

= 100k, R2 = 10k, R3 = 25k

1

R

 10k

1

C = 1000pF, R1 = 1k
C = 50F, R

ppm/°C 0°C  T

R

= R2 = 20k

1

1

 70°C

A

= 2M

ppm/°C

= 10V, V

LOW

= R

= 20k

1

2

@ R1 = 2M

= 10kHz

H

= 100Hz, fH = 100kHz

L

F

R
fH @ R1 = 1k

f

L

L

Figure 5

k

Figure 3

mV/k
mV/k

Figure 2,
Figure 2

S1 Open

, S1 Closed



R1 = 30k

Figure 7

and

HIGH

Figure 8

= 20V,

Notes

1

Output amplitude is directly proportional to the resistance, R3, on Pin 3. See Figure 3.

2

For maximum amplitude stability , R3 should be a positive temperature coefficient resistor.

Bold face parameters are covered by production test and guaranteed over operating temperature range.

Rev. 1.03

4

XR-2206

DC ELECTRICAL CHARACTERISTICS (CONT’D)

XR-2206M/P XR-2206CP/D
Parameters Min. Typ. Max. Min. Typ. Max. Units Conditions
Amplitude Modulation

Input Impedance 50 100 50 100
Modulation Range 100 100 %
Carrier Suppression 55 55 dB
Linearity 2 2 % For 95% modulation

Square-Wave Output

Amplitude 12 12 Vp-p Measured at Pin 11.
Rise Time 250 250 ns CL = 10pF
Fall Time 50 50 ns CL = 10pF
Saturation Voltage 0.2 0.4 0.2 0.6 V IL = 2mA
Leakage Current 0.1 20 0.1 100
FSK Keying Level (Pin 9) 0.8 1.4 2.4 0.8 1.4 2.4 V See section on circuit controls
Reference Bypass Voltage 2.9 3.1 3.3 2.5 3 3.5 V Measured at Pin 10.

k

A

V

= 26V

CC

Notes

1

Output amplitude is directly proportional to the resistance, R3, on Pin 3. See Figure 3.

2

For maximum amplitude stability , R3 should be a positive temperature coefficient resistor.

Bold face parameters are covered by production test and guaranteed over operating temperature range.

Specifications are subject to change without notice

ABSOLUTE MAXIMUM RATINGS

Power Supply 26V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Dissipation 750mW. . . . . . . . . . . . . . . . . . . . . . .

Total Timing Current 6mA. . . . . . . . . . . . . . . . . . . . . . . .

Storage Temperature -65°C to +150°C. . . . . . . . . . . .

Derate Above 25°C 5mW/°C. . . . . . . . . . . . . . . . . . . . . .

SYSTEM DESCRIPTION

The XR-2206 is comprised of four functional blocks; a
voltage-controlled oscillator (VCO), an analog multiplier
and sine-shaper; a unity gain buffer amplifier; and a set of
current switches.

The VCO produces an output frequency proportional to
an input current, which is set by a resistor from the timing

terminals to ground. With two timing pins, two discrete
output frequencies can be independently produced for
FSK generation applications by using the FSK input
control pin. This input controls the current switches which
select one of the timing resistor currents, and routes it to
the VCO.

Rev. 1.03

5