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
Modulation Range
Carrier Suppression
Linearity
50
100
100
55
50
100
100
55
kW
%
dB
%
2
2
For 95% modulation
Square-Wave Output
Amplitude
12
250
50
12
250
50
Vp-p
ns
ns
V
Measured at Pin 11.
CL = 10pF
Rise Time
Fall Time
CL = 10pF
Saturation Voltage
Leakage Current
FSK Keying Level (Pin 9)
Reference Bypass Voltage
0.2
0.1
1.4
3.1
0.4
20
0.2
0.1
1.4
3
0.6
100
2.4
3.5
IL = 2mA
mA
V
VCC = 26V
0.8
2.9
2.4
3.3
0.8
2.5
See section on circuit controls
Measured at Pin 10.
V
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
Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . 5mW/°C
Total Timing Current . . . . . . . . . . . . . . . . . . . . . . . . 6mA
Storage Temperature . . . . . . . . . . . . -65°C to +150°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.
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.
The VCO produces an output frequency proportional to
an input current, which is set by a resistor from the timing
Rev. 1.03
5
EXAR [ EXAR CORPORATION ]
