SAMSUNG KS58015N

KS58015
DTMF DIALER FOR BINARY DATA-IN
INTRODUCTION
14-DIP-300
The KS58015 is a DTMF dialer for 4 bit binary data input from
microprocessor. When the tone enable input low, the oscillator is inhibited and the device is in a low power consumption at standby mode.
On the low to high transition of tone enable, data is latched into the
device and selected the standard DTMF signals.
The N-channel open drain output provides a MUTE output during tone
generation.
14-SOP-225B
FEATURES
• Direct interface with microprocessor
• Generates 16 standard tones
• Uses inexpensive TV crystal or ceramic resonator
(3.579545MHz)
• Very low total harmonic distortion
• Low power standby mode
• Binary data inputs with latches
• Wide Operating Voltage : 2.5 ~ 8.0V
ORDERING INFORMATION
Device
Package
KS58015N
14-DIP-300
KS58015D
14-SOP-225B
Operating Temperature
- 30°C ~ + 70°C
BLOCK DIAGRAM
VDD
MUTE
OSC IN
OSC
MUTE LOGIC
CONTROL
CIRCUIT
ROW & COLUMN
TONE COUNTER
OSC OUT
TEN
ST
GS
4
D0
D1
D2
DATA
LATCH &
DECODER
D/A
CONVER TER &
MIXING
D3
VS S
Fig.1
TONE OUT
KS58015
DTMF DIALER FOR BINARY DATA-IN
PIN CONFIGURATION
VDD
1
14
TONE OUT
TEN
2
13
NC
ST
3
12
D3
GS
4
11
D2
VSS
5
10
D1
OSC IN
6
9
D0
OSC OUT
7
8
MUTE
KS58015
Fig. 2
PIN DESCRIPTION
Pin No
Symbol
1
VDD
2
TEN
Descriptions
Positive supply input
Tone enable input. An internal pull-up resistor is in a chip. When this pin connects to
logic ‘low’, the oscillator is inhibited and the tone generators and output transistor are
turned off. A low to high transition on this pin latches in data from D0 ~ D3, and tone
generation continues until this pin is connected ‘low’again.
Single tone enable. An internal pull-up resistor is in a chip. When this pin connects
3
ST
to logic ‘low’, the device is in a single tone mode. For normal operation, connects this
pin to VDD or open-circuit.
Group selection input. This pin is used to select the high group or low group fre-
4
GS
quency, when the device is in single tone mode. An internal pull-up resistor is in a
chip. When this pin connects to VDD or open, the high group will be generated, and when
connects to VSS, the low group will be generated.
5
VSS
6
OSC IN
Oscillator input
Negative supply input
7
OSC OUT
Oscillator output
8
MUTE
9, 10,
D0, D1,
DATA-INPUTS. These are the inputs for binary-coded data, which is latched in on
11, 12
D2, D3
the rising edge of the tone enable signal.
13
N.C
14
Tone out
N-channel open drain output.
This pin is a logic high state, when the tone enable pin is a high state.
This pin goes a logic low state, when the tone enable pin is a low state.
No connection.
This output is the open emitter of a NPN transistor. When an external load resistor
is connected from this pin to VSS, the tone generates on the tone enable pin = ‘High’.
KS58015
DTMF DIALER FOR BINARY DATA-IN
ABSOLUTE MAXIMUM RATINGS
Characteristic
Symbol
Value
Unit
Supply Voltage
MUTE Voltage
Input Voltage
Power Dissipation
Operating Temperature
Storage Temperature
VDD
VI (MUTE)
VI
PD
T OPR
T STG
9
9
VDD + 0.3 ~ VSS - 0.3
500
- 30 ~ + 70
- 55 ~ + 125
V
V
V
mW
°C
°C
ELECTRICAL CHARACTERISTICS
(VSS = 0V, 2V<VDD<8V, fOSC = 3.579545MHz, Ta = 25°C, unless otherwise noted)
Characteristic
Symbol
Test Conditions
Min
Typ
Operating Voltage Range
VDD
Operating Current
IDD
VDD = 3.0V, MUTE Open
ISB
RL = 10K, D0~D3 open, VDD = 3.0V
50
DI0 ~ DI3, TEN
100
Standby Current
Input Pull-up Resistance
RI (PULL)
VIL
Input Voltage
Output Current (MUTE)
Tone Output Level
VIH
2.0
DI0 ~ DI3, TEN
IOL (MUTE)
VDD = 3V, VO = 0.5, TEN = LOW
IOH (MUTE)
VDD = 3V, VO = VDD, TEN = HIGH
VO (TONE)
VDD = 3V, RL = 5KΩ, Row Tone
dBCR
VDD = 3V, RL = 5 KΩ
THD (Dual Tone)
THD
1MHz Bandwidth, VDD = 5V, RL =5KΩ
V
1.5
mA
µA
100
KΩ
VSS
0.2VDD
VDD
0.5
Unit
8.0
0.8VDD
V
V
1.5
1
-14
1
Ratio of Column to Row
Max
2
mA
2
µA
-11
dBV
3
dB
-20
90% Amplitudes, VDD = 3.0V
dB
Oscillator Start-up Time
tST (OSC)
4
mS
Data Set-up Time
tSU (DATA)
VDD = 3.0V
200
nS
Data Hold Time
tH (DATA)
VDD = 3.0V
200
nS
Data Duration
tW (DATA)
VDD = 3.0V
600
nS
APPLICATION INFORMATION
FUNCTION DESCRIPTION
When tone enable input is low, oscillator is inhibited, being allowed to low power standby mode since transistor goes to
turn off state, so D0 ~ D3 input data is ignored.
However if tone enable input goes from low to high, input data is latched and tone output is enabled, and it is correspond
to data input.
This device is designed with 14 levels, 28 segments in each single-tone. The column tone is pre-emphasized 2dB than
the row tone.
TABLE1. SINGLE TONE FREQUENCY
Tone Group
Standard DTMF (Hz)
ROW 1
ROW 2
ROW 3
ROW 4
COLUMN 1
COLUMN 2
COLUMN 3
COLUMN 4
697
770
852
941
1209
1336
1477
1633
Tone Output Actual Frequency
699.13
766.17
845.43
947.97
1215.89
1331.67
1471.85
1645.01
% Deviation from Standard
+ 0.31
- 0.50
- 0.54
+ 0.74
+ 0.57
- 0.33
- 0.35
+ 0.75
KS58015
DTMF DIALER FOR BINARY DATA-IN
TABLE 2. FUNCTION TABLE
Key Board
Data Input
Tone Output
Equivalent
D3
D2
D1
D0
fL (Hz)
fH (Hz)
1
0
0
0
1
697
1209
2
0
0
1
0
697
1336
3
0
0
1
1
697
1477
4
0
1
0
0
770
1209
5
0
1
0
1
770
1336
6
0
1
1
0
770
1477
7
0
1
1
1
852
1209
8
1
0
0
0
852
1336
9
1
0
0
1
852
1477
0
1
0
1
0
941
1336
*
1
0
1
1
941
1209
#
1
1
0
0
941
1477
A
1
1
0
1
697
1633
B
1
1
1
0
770
1633
C
1
1
1
1
852
1633
D
0
0
0
0
941
1633