CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Electrical Specifications
T
A
= 25
o
C, V
CC
= 5.1V
±5%
(See Figure 4)
PARAMETER
MIN
TYP
MAX
UNITS
STATIC DC VOLTAGES
ALBO Pins (Pins 2, 3, 4 and 17)
Pre Amp Inputs and Outputs (Pins 5, 6, 7 and 8)
Output Pulse 1, 2 (Pins 10 and 11)
Oscillator/Clock (Pins 12, 13, 15 and 16)
STATIC DC CURRENTS
I
CC
Output Pulse 1, 2 (Pins 10 and 11)
-
-
22
0
30
100
mA
µA
-
2.4
-
3.1
0
2.9
5.1
3.6
0.1
3.4
-
4.1
V
V
V
V
Electrical Specifications
PARAMETER
DYNAMIC SPECIFICATIONS
Preamplifier Input Impedance
Preamplifier Output Impedance
Preamplifier Gain at 2.37MHz
Preamplifier Output Offset Voltage
Clock Limiter Input Impedance
ALBO Off Impedance
ALBO On Impedance
DATA Threshold Voltage
CLOCK Threshold Voltage
ALBO Threshold
V
TH
(D) as % of V
TH
(AL)
V
TH
(CL) as % of V
TH
(AL)
Buffer Gate Voltage (low)
Differential Buffer Gate Voltage
Output Pulse Rise Time
T
A
= 25
o
C, V
CC
= 5.1V
±5%
SYMBOL
FIGURE
NOTE
MIN
TYP
MAX
UNITS
Z
IN
Z
OUT
A
O
∆V
OUT
Z
IN
(CL)
Z
ALBO
(off)
Z
ALBO
(on)
V
TH
(D)
V
TH
(CL)
V
TH
(AL)
7
7
7
7
5
5
5
6
6
6
1
2
3
4
5, 8
6, 8
7, 8
20
-
47
-50
10
20
-
0.62
0.92
1.4
44
66
-
-
50
0
-
-
-
0.7
1.1
1.5
47
73
0.8
0
-
-
2
-
50
-
-
10
0.78
1.28
1.6
49
80
0.95
0.15
40
kΩ
kΩ
dB
mV
kΩ
kΩ
Ω
V
V
V
%
%
V
V
ns
V
OL
∆V
OL
t
R
4
4
4, 8
9
9
9, 10
0.65
-0.15
-
2
CD22301
Electrical Specifications
PARAMETER
Output Pulse Fall Time
Output Pulse Width
Pulse Width Differential
Clock Drive Current
NOTES:
1. No signal input. Measure voltage between pins 7 and 8.
2. Measure clock limiter input impedance at pin 15. See Figure 5.
3. Adjust potentiometer for 0V (See Figure 5). Measure ALBO off impedances from pins 2, 3 and 4 to pin 1.
4. Increase potentiometer until voltage at pin 17 = 2V (See Figure 5). Measure ALBO on impedances from pins 2, 3 and 4 to pin 1.
5. Adjust potentiometer for
∆V
= 0V (See Figure 6). Then slowly increase
∆V
in the positive direction until pulses are observed at the DATA
terminal.
6. Continue increasing
∆V
until the DC level at the clock terminal drops to 4V (See Figure 6).
7. Continue increasing
∆V
until the ALBO terminal rises to 1V (See Figure 6).
8. Turn potentiometer in the opposite direction and measure negative threshold voltages by repeating tests outlined in notes 5, 6 and 7.
9. Set e
IN
= 2.75mV
RMS
at f
≈
1.185MHz. Adjust frequency until maximum amplitude is obtained at pin 15. Observe output pulses at pins
10 and 11.
10. Adjust input signal amplitude until pulses just appear in outputs. Increase input amplitude by 3dB.
T
A
= 25
o
C, V
CC
= 5.1V
±5%
(Continued)
SYMBOL
t
F
t
W
∆t
W
I
CL
FIGURE
4, 8
4, 8
4, 8
NOTE
9, 10
9, 10
9, 10
MIN
-
290
-10
-
TYP
-
324
0
2
MAX
40
340
10
-
UNITS
ns
ns
ns
mA
+
ALBO
GND 1
SUBSTRATE
1µF
ALBO
18 BIAS 17
17µH
0.1
µF
600 - 800pF
120K
BIAS
LC TANK
16
15 INPUT
14 V
CC
AO1 2
AO2 3
4
AO3
0.1µF
2200pF
470µH
2.7K
8.2K
1500pF
1.8K
PULSE
INPUT
430
Ω
0.1µF
15µH
510Ω
82pF
5
150pF
6
130Ω
1.33K
4.53K
0.1µF
6.19K
7
8
ALBO
OUTPUT
CIRCUIT
SEE
FIG. 1
PEAK
DETECTOR
CLOCK
CIRCUIT
SEE FIG. 2
LIMITER
TIMING
PULSE
AMPLIFIER
13
PRE-
AMPLIFIER
CLOCK THRESHOLD
COMPARATOR
12
100
µH
PHASE
SHIFT
NETWORK
3.83K
33pF
DATA THRESHOLD
COMPARATOR
GATE
FF
11
PULSE
OUTPUT
GATE
FF
10
9 V
EE
V
CC
FIGURE 1. TYPICAL 1.544MHz T1 REPEATER SYSTEM
3
CD22301
16
15
V
CC
V
CC
V
CC
FROM
LIMITER
TO AMPLIFIER
5.1K
5.1K
5.5K
13
12
TO TIMING
PULSE
AMPLIFIER
12K
V
EE
V
EE
V
EE
FROM CLOCK
THRESHOLD DETECTOR
FIGURE 2. CLOCK INTERFACE CIRCUIT
FIGURE 3. PHASE-SHIFT INTERFACE CIRCUITS
1
2
3
0.1µF
e
IN
0.001
µF
8.2kΩ
8.2kΩ
0.1
µF
4
5
6
7
8
9
18
1µF
17
16
L
1
(NOTE)
15
14
3.83kΩ
13
12
130Ω
11
10
20
pF
100µH
C
1
(NOTE)
91kΩ
V
CC
= 5.1V
0.1µF
0.68µF
NOTE:
C
1
AND L
1
RESONATE AT 1.272MHz
130Ω
PULSE OUTPUT
FIGURE 4. DC AND OUTPUT PULSE TEST CIRCUIT
1
2
3
4
5
6
7
8
9
18
17
16
15
14
0.01µF
13
12
11
10
V
CC
= 5.1V
0.1µF
5KΩ
FIGURE 5. TEST CIRCUIT FOR IMPEDANCE MEASUREMENT
4
CD22301
1
2
3
4
5
6
7
8
9
5kΩ
∆V
18
1µF
17
1µF
16
15
1µF
2kΩ
V
CC
= 5.1V
14
1µF
13
0.1µF 75Ω
12
IN4152
11
10
130Ω
2.75V
RMS
at
1.185MHz
CLOCK
- 3V + 8.2kΩ
8.2
kΩ
0.1
µF
0.1
µF
0.1
µF
8.2kΩ
8.2kΩ
0.1
µF
DATA
FIGURE 6. TEST CIRCUIT FOR THRESHOLD VOLTAGE MEASUREMENT
1
2
NC
3
4
1.0µF
e
in
5
6
50Ω
200
kΩ
1.0
µF
200kΩ
7
8
9
18
17
16
15
14
0.1µF
13
12
11
10
V
CC
= 5.1V
NC
NC
FIGURE 7. PREAMPLIFIER GAIN AND IMPEDANCE MEASUREMENT CIRCUIT
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