GSG
勁力
AK2127
EDITION 09/00
半導½
Gunter
Semiconductor
GmbH
Receiver/ Demodulator for time
code signals transmitted by the
transmitter DCF77( Germany) ,
MSF(UK), or WWVB(USA)
For inquiry please contact :
China
Tel: 0086-755-3200442
Fax: 0086-755-3355520
Hong Kong
Tel : 00852-26190748
Fax: 00852-24948080
e-mail
sales@gsg-asia.com
Edition 09/00
Radio Controlled Clock Receiver
Short Description
The TFA2127 is a bipolar integrated straight through
receiver circuit in the frequency range of 50...80 kHz.
The integrated circuit is designed for radio controlled
clock application with high sensitivity.
Features
• Supply voltage range 1.2 ... 3.5 V
• Very high sensitivity < 1 µV
• High selectivity by X-tal resonator
• Start/stop-function available
• Complementary output stages
• Minimum external components
Package
1. Die
Pad-layout
11 10
12
13
14
15
16
17
18 19
1 2
TFA 2127 X
9
8
7
6
5
4
3
Die dimensions
- die measures:
1.8 mm x 2.1 mm
- bond-pad measures: 100 µm x 100 µm
- die height:
- width of scribe line:
320 µm ± 15 µm
80 µm
2. SOP 16
only for test purposes
1.35
±
0.1
9.9
±
0.1
6.0
±
0.2
3.9
±
0.1
≤
2.00
+ 0.1
0.05
0...8
°
0.15
-
0.15
≥
0.3
1.27
0.42
+ 0.07
- 0.06
0.25
M
≤
0.7
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
09/00
0.19
±
0.06
1
Pin Description
Pad-No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Pin-No.
(SOP 16)
1
-
2
3
4
5
6
7
8
9
10
11
-
12
13
14
15
16
16
Symbol
E3Q
A2
A1
AP1
AP2
E1
V
CC2
PON
V
CC1
OPD
OPU
GND1
KS
SR
CR
CD
AP3
GND3
GND2
Function
Amplifier 3 input
Amplifier 2, non inverting output
Amplifier 2, inverting output
Bias control
Bias control
RF input, antenna
Supply voltage 2, internal band gap
Stand-by and Start / Stop-switch
Supply voltage 1
Output time code, pull-down
Output time code, pull-up
Ground (digital)
Comparator threshold
Clamping control input
AGC time constant
Low pass filter
Capacitor for bias stability
Ground (analog)
Ground (analog)
Block Diagram and Test Circuit
6.8nF
GND1
47nF
22nF
AP3
17
GND1
4.7µF
GND1
AP2
5
AP1
4
A1
3
A2
2
E3Q
1
CD
16
CR
15
14
E1
6
V1
∆V1
200k
V2
-
1p
UE1
V3
CONTROL AMPLIFIER
SR
V
CC3
50
V
CC1
TFA 2127
GND1
V
CC2
7
POWER SUPPLY
COMPARATOR
10
V3
9
V
CC1
8
PON
18
GND 3
V1, V2
19
GND2
12
GND 1
13
KS
OPD
11
OPU
100k
4.7µF
100k
V2
V1
UE1: pot core A
L
1100 nH/w
2
; 2 x 25 windings with 0.2 CuL
2
09/00
TFA2127
Absolute Maximum Ratings
Parameter
Supply voltage 1
Supply voltage 2
Output voltage OPD
Output voltage OPU
Input voltage SR
Input voltage PON
Junction temperature
Ambient temperature range
Symbol
V
CC1
V
CC2
V
OPD
V
OPU
V
SR
V
PON
T
j
T
amb
-25
min.
0
0
-0.3
-0.3
0
0
max.
5.25
5.25
V
CC1
5.25
V
CC1
V
CC1
150
+70
Unit
V
V
V
V
V
V
°C
°C
Recommended Operational Conditions
Parameter
Supply voltage 1
Supply voltage 2
RF input voltage
Reception frequency
Symbol
V
CC1
V
CC2
V
iE1
f
min.
2.2
1.2
1
50
max.
3.5
1.8
50000
80
Unit
V
V
µV
KHz
09/00
TFA2127
3
Electrical Characteristics
Refering to the test circuit with generator signal
f = 77500 ± 5 Hz
pulse modulation of RF-signal from 100 % to 25 %
during modulation time t = 200 ms,
V
CC1
= V
CC2
= 1.4 V; V
PON
= 0 V; T
a
= 25 °C,
unless specified otherwise
Parameter
Supply voltage 1
Supply voltage 2
Supply current
(V
CC1
= 3.5 V)
(V
CC1
= 2.2 V)
Supply current
Supply current stand-by
(V
PON
= V
CC1
)
Input current stand-by switch
Input current on SR
Output pulse duration (OPU)
1)
V
iE1
= 3 µV, 10 mV
Output LOW-current (OPU)
V
iE1
= 30 µV
Output LOW-voltage (OPU)
V
iE1
= 30 µV; I
OL
= 15 µA
Output HIGH-current (OPD)
V
iE1
= 30 µV
Output HIGH-voltage (OPD)
V
iE1
= 30 µV; -I
OH
=15 µA
Sensitivity
(min. RF input for t
OL
≥
180 ms)
1)
Symbol
V
CC1
V
CC2
min.
2.2
1.2
typ.
3.5
1.4
max.
5.25
1.8
Unit
V
V
I
CC11
I
CC12
I
CC2
I
CC10
400
400
300
540
530
500
0.03
690
690
640
1
µA
µA
µA
µA
-I
PON
-I
SR
t
OL
180
14
0.3
190
20
2
220
µA
µA
ms
I
OL
100
200
µA
V
OL
45
200
mV
-I
OH
100
330
µA
V
OH
1.1
1.3
V
V
iE1
0.8
1
µV
1)
Test in a special application circuit without socket.
4
09/00
TFA2127
京公网安备 11010802033920号
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