XR-2206 Datasheet, PDF (5/16 Pages) Exar Corporation – Monolithic Function Generator

XR-2206
DC ELECTRICAL CHARACTERISTICS (CONT’D)
Parameters
Amplitude Modulation
Input Impedance
Modulation Range
Carrier Suppression
Linearity
Square-Wave Output
Amplitude
Rise Time
Fall Time
Saturation Voltage
Leakage Current
FSK Keying Level (Pin 9)
Reference Bypass Voltage
XR-2206M/P
XR-2206CP/D
Min. Typ. Max. Min. Typ. Max. Units Conditions
50
100
100
55
2
50 100
100
55
2
kW
%
dB
% For 95% modulation
12
12
Vp-p Measured at Pin 11.
250
250
ns C_L = 10pF
50
50
ns C_L = 10pF
0.2 0.4
0.2 0.6
V I_L = 2mA
0.1
20
0.1 100
mA V_CC = 26V
0.8
1.4
2.4
0.8
1.4
2.4
V See section on circuit controls
2.9
3.1
3.3
2.5
3
3.5
V Measured at Pin 10.
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.
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