TLC2940 Datasheet, PDF (4/9 Pages) Texas Instruments – HIGH-PERFORMANCE CMOS VOLTAGE-CONTROLLED OSCILLATOR

TLC2940
HIGH-PERFORMANCE CMOS VOLTAGE-CONTROLLED OSCILLATOR
SLAS244 – OCTOBER 1999
electrical characteristics over recommended operating free-air temperature range, V_DD = 3 V
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
VOH
VOL
Zi(VCOIN)
IDD(VCO)
High-level output voltage, VCO OUT
Low-level output voltage, VCO OUT
Input impedance at VCOIN
Supply current
IOH = – 2 mA
IOL = 2 mA
VCO IN = 1/2 VDD
See Note 6
fosc
Oscillation frequency
RBIAS = 2.4 kΩ, VCOIN = 1/2 VDD
tr
Output rise time
VCOIN = 0 V, RBIAS =2.4 kΩ ,
CL = 15 pF
tf
Output fall time
VCOIN = 0 V, RBIAS =2.4 kΩ ,
CL = 15 pF
Output duty ratio
RBIAS = 2.4 kΩ, VCOIN = 1/2 VDD,
See Note 7
α(_fosc)
Temperature coefficient of oscillation frequency
VCOIN = 1/2 VDD, RBIAS = 2.4 kΩ,
TA = –20°C to 85°C
kSVS(fosc) Supply voltage coefficient of oscillation frequency
VCOIN = 1.5 V, RBIAS = 2.4 kΩ,
VDD = 2.7 V to 3.3 V
NOTES: 6. VCOIN = 1/2 VDD, RBIAS = 2.4 kΩ, current through pin 1 and 8.
7. The maximum and minimum value of this parameter are not production tested.
MIN
2.4
32
40%
TYP MAX UNIT
V
0.3 V
10
MΩ
6
10 mA
40
48 MHz
13
ns
6
ns
44% 60%
0.07
%/°C
0.01
%/mV
electrical characteristics over recommended operating free-air temperature range, V_DD = 5 V
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
VOH
VOL
Zi(VCOIN)
IDD(VCO)
High-level output voltage, VCO OUT
Low-level output voltage, VCO OUT
Input impedance at VCOIN
Supply current
IOH = – 2 mA
IOL = 2 mA
VCOIN = 1/2 VDD
See Note 6
fosc
Oscillation frequency
RBIAS = 2.4 kΩ, VCOIN = 1/2 VDD
tr
Output rise time
VCOIN = 0 V, RBIAS =2.4 kΩ ,
CL = 15 pF
tf
Output fall time
VCOIN = 0 V, RBIAS =2.4 kΩ ,
CL = 15 pF
Output duty ratio
RBIAS = 2.4 kΩ, VCOIN = 1/2 VDD,
See Note 7
α(_fosc)
Temperature coefficient of oscillation frequency
VCOIN = 1/2 VDD, RBIAS = 2.4 kΩ,
TA = –20°C to 85°C
kSVS(fosc) Supply voltage coefficient of oscillation frequency
VCOIN = 2.5 V, RBIAS = 2.4 kΩ,
VDD = 4.5 V to 5.5 V
NOTES: 6. VCOIN = 1/2 VDD, RBIAS = 2.4 kΩ, current through pin 1 and 8.
7. The maximum and minimum value of this parameter are not production tested.
MIN TYP MAX UNIT
4.5
V
0.5 V
10
MΩ
16
30 mA
45
65
85 MHz
5.8
ns
3.2
ns
40% 46% 60%
0.06
%/°C
0.005
%/mV
4
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