1 (10)
DA1016B.000
13 May, 2002
MAS1016B
AM Receiver IC
High Sensitivity
Very Low Power Consumption
Wide Supply Voltage Range
Power Down Control
Control for AGC On
High Selectivity by Crystal Filter
DESCRIPTION
The MAS1016B AM Receiver chip is a highly sensitive,
simple to use AM receiver specially intended to receive
time signals in the frequency range from 40 kHz to 100
kHz. Only a few external components are required for
time signal receiver. The circuit has preamplifier, wide
range automatic gain control, demodulator and output
comparator built in. The output signal can be
processed directly by an additional digital circuitry to
extract the data from the received signal. The control
for AGC (automatic gain control) can be used to switch
AGC on or off if necessary. WWVB in USA and JJY in
Japan require use of AGC control procedure, which is
simplified in MAS1016B.
FEATURES
APPLICATIONS
Highly Sensitive AM Receiver, 0.5
V
RMS
typ.
Wide Supply Voltage Range from 1.1 V to 3.6 V
Very Low Power Consumption 50
A typ.
Power Down Control
Only a Few External Components Necessary
Control for AGC On
Wide Frequency Range from 40 kHz to 100 kHz
High Selectivity by Quartz Crystal Filter
Die and TSSOP-16 Package
Time Signal Receiver Designed for MSF (UK),
WWVB (USA), JJY (Japan) and DCF77 (Germany)
Receiver for ASK Modulated Data Signals
BLOCK DIAGRAM
AGC Amplifier
Demodulator
&
Comparator
Power Supply/Biasing
RFI
OUT
QI
QO
PDN
VDD
VSS
AGC
DEC
AON (=AGC on)
2 (10)
DA1016B.000
13 May, 2002
PAD LAYOUT
DIE size = 1.79 x 1.79 mm; PAD size = 100 x 100
m
Note: Because the substrate of the die is internally connected to VDD, the die has to be connected to VDD or left
floating. Please make sure that VDD is the first pad to be bonded. Pick-and-place and all component assembly are
recommended to be performed in ESD protected area.
Note: Coordinates are pad center points where origin has been located in the center of VDD pad
Pad Identification
Name
X-coordinate
Y-coordinate
Note
Power Supply Voltage
VDD
0
m
0
m
Quarz Filter Output
QO
306
m
19
m
Quarz Filter Input
QI
587
m
19
m
AGC Capacitor
AGC
866
m
19
m
Receiver Output
OUT
1143
m
19
m
1
Demodulator Capacitor
DEC
1111
m
1436
m
AGC On Control
AON
868
m
1436
m
2
Power Down Input
PDN
551
m
1436
m
3
Receiver Input
RFI
309
m
1436
m
Power Supply Ground
VSS
16
m
1415
m
Notes:
1) OUT = VSS when carrier amplitude at maximum; OUT = VDD when carrier amplitude is reduced (modulated)
-
the output is a current source/sink with |I
OUT
| > 5
A
-
at power down the output is high impedance
2) AON = VSS means AGC off (hold current gain level); AON = VDD means AGC on (working)
-
Internal pull-up with current < 1
A which is switched off at power down
3) PDN = VSS means receiver on; PDN = VDD means receiver off
MAS1016B
VDD QO
QI AGC OUT
VSS RFI PDN AON DEC
1788 m
1786 m
3 (10)
DA1016B.000
13 May, 2002
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Conditions
Min
Max
Unit
Supply Voltage
V
DD
-V
SS
-0.3
5.0
V
Input Voltage
V
IN
V
SS
-0.3
V
DD
+0.3
V
Power Dissipation
P
MAX
100
mW
Operating Temperature
T
OP
-20
70
o
C
Storage Temperature
T
ST
-40
120
o
C
ELECTRICAL CHARACTERISTICS
Operating Conditions: VDD = 1.4V, Temperature = 25C
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Operating Voltage
V
DD
1.10
3.60
V
Current Consumption
I
DD
50
100
A
Stand-By Current
I
DDoff
0.1
A
Input Frequency Range
f
IN
40
100
kHz
Minimum Input Voltage
V
IN min
0.5
1
Vrms
Maximum Input Voltage
V
IN max
20
mVrms
Input Levels |l
IN
|<0.5
A
V
IL
V
IH
0.8 V
DD
0.2 V
DD
V
Output Current
V
OL
<0.2 V
DD
;V
OH
>0.8 V
DD
|I
OUT
|
5
A
Output Pulse
T
0
1
Vrms
V
IN
20 mVrms
50
140
ms
T
1
1
Vrms
V
IN
20 mVrms
150
230
ms
Startup Time
T
Start
8
s
Output Delay Time
T
Delay
50
100
ms
4 (10)
DA1016B.000
13 May, 2002
TYPICAL APPLICATION
Note 1: Crystal
The crystal as well as ferrite antenna frequencies are chosen according to the time signal system. Ferrite antenna
frequencies and recommended crystal frequencies are presented in table 1. For more details about crystal
selection see DAEV1016B.
Table 1
Time-Signal System Frequencies
Time-Signal System
Location
Frequency
Recommended Crystal Frequency
Unit
DCF77
Germany
77.5
77.503
kHz
MSF
United Kingdom
60
60.003
kHz
WWVB
USA
60
60.003
kHz
JJY
Japan
40 and 60
40.003 and 60.003
kHz
Note 2: AGC Capacitor
The AGC capacitor value is also chosen according to time-signal system. Recommended capacitor values are
presented in table 2. WWVB and JJY systems require external control of AON (=AGC on) pin to receive pulses
correctly. For more details about required control of AON in WWVB and JJY systems see DAEV1016B.
The AGC and DEC capacitors should have low leakage currents due to very small 40 nA signal currents through
the capacitors. The insulation resistance of these capacitors should be higher than 70 M
. Also probes with at
least 100 M
impedance should be used for voltage probing of AGC and DEC pins.
Table 2
Recommended AGC Capacitor Value
Time-Signal System
Recommended AGC Capacitor Value
DCF77
470nF
MSF
1uF
WWVB
220nF + Special AGC Control
JJY
220nF + Special AGC Control
AGC Amplifier
Demodulator
&
Comparator
Power Supply/Biasing
RFI
OUT
QI
QO
VSS
AGC
DEC
Receiver
output
Ferrite-
Antenna
Note 1
AON (=AGC on)
VDD
1.4 V
PDN
Note 2
X1
C
AGC
0.47...1 uF
C
DEM
47 nF
5 (10)
DA1016B.000
13 May, 2002
SAMPLES IN SBDIL 20 PACKAGE
PIN DESCRIPTION
Pin Name
Pin
Type
Function
Note
NC
1
VDD
2
P
Positive Power Supply
NC
3
QO
4
AO
Quartz Filter Output
NC
5
1
QI
6
AI
Quartz Filter Input
AGC
7
AO
AGC Capacitor
OUT
8
DO
Receiver Output
2
NC
9
NC
10
NC
11
NC
12
NC
13
NC
14
DEC
15
AO
Demodulator Capacitor
AON
16
DI
AGC On Control
3
PDN
17
AI
Power Down Input
4
RFI
18
AI
Receiver Input
NC
19
VSS
20
G
Power Supply Ground
Notes:
1) Pin 5 between quartz crystal filter pins must be connected to VSS to eliminate package leadframe parasitic
capacitances disturbing the crystal filter performance. All other NC (Not Connected) pins are also
recommended to be connected to VSS to minimize noise coupling.
2) OUT = VSS when carrier amplitude at maximum; OUT = VDD when carrier amplitude is reduced (modulated)
-
the output is a current source/sink with |I
OUT
| > 5
A
-
at power down the output is high impedance
3) AON = VSS means AGC off (hold current gain level); AON = VDD means AGC on (working)
-
Internal pull-up (to AGC on) with current < 1
A which is switched off at power down
4) PDN = VSS means receiver on; PDN = VDD means receiver off
NC 1
VDD 2
NC 3
QO 4
NC 5
QI 6
AGC 7
OUT 8
NC 9
NC 10
20 VSS
19 NC
18 RFI
17 PDN
16 AON
15 DEC
14 NC
13 NC
12 NC
11 NC
Top Marking Definitions:
YYWW = Year Week
XXXXX.X = Lot Number
MAS1016B
YYWW
XXXXX.X
PDF 
ZIP