TE
CH
tm
T62M99A
TM Technology Inc. reserves the right P. 1
Publication Date: JUN. 2004
to change products or specifications without notice.
Revision:B
T62M99A
Digital Sound Processor
Embedded 48K Bits SRAM
Features
! Operating voltage: 4.5V ~ 5.5V
! ADM algorithm
! Low noise ( -91dB typical)
! Low distortion rate (0.5% typical)
! Embedded 48k SRAM
! Automatic reset function
! Package type: 16-pin DIP/SOP
Application
! Television
! Karaoke systems
! Video disc player (CD/VCD/DVD)
! Sound equipment with Echo Processor.
! Video tape Recorder
! Car stereo
! Electronic Musical Instrument
Part Number Examples
Part NO.
Pkg.
Description
T62M99A-D
16-SOP
300mil-16-SOP
T62M99A-K
16-DIP
300mil-16-DIP
Description
The T62M99A is an echo/surround effect
processor designed for various audio system
applications such as Karaoke, television,
VCD/DVD, sound equipment ,..... Etc. It
consists of a built-in Voltage controlled
Oscillator, Embedded 48Kbits SRAM, A/D
and D/A converters as well as echo/surround
delay time control logic.
The embedded 48Kbits SRAM can generate
delay time effect through the external VCO
resister control which simplifies the
application and make it easy adjustment.
TE
CH
tm
T62M99A
TM Technology Inc. reserves the right P. 2
Publication Date: JUN. 2004
to change products or specifications without notice.
Revision:B
Block Diagram
+
-
+
-
-
+
+
-
-
+
M OD
DEM
DI DO0 DO1
M O M I CLOCK
1/2
VCC
AUTO
RESET
VCO
RAM
LPF1
IN
LPF1
OUT
LPF2
OUT
LPF2
IN
OP2
OUT
OP2
IN
OP1
IN
OP1
OUT
CC0
CC1
VCC
REF
AGND
DGND
OSC_O VCO
4.7K
Ohm
4.7K
Ohm
LPF1
COMP
LPF2
Pin Configurations
REF
VCC
AGND
DGND
OSC_O
CC1
VCO
CC0
1
2
3
4
6
5
7
8
9
10
11
12
13
14
LPF2-OUT
LPF2-IN
OP2-OUT
OP2-IN
OP1-OUT
15
16
OP1-IN
LPF1-OUT
LPF1-IN
T62M99A
TE
CH
tm
T62M99A
TM Technology Inc. reserves the right P. 3
Publication Date: JUN. 2004
to change products or specifications without notice.
Revision:B
Pin description
Pin NO. Pin Name I/O
Description
1
VCC
-
Analog and positive power supply
2
REF
I
Analog reference voltage
3 AGND -
Analog
ground
4 DGND -
Digital
ground
5
OSC_O
I
System oscillator output
6
VCO
I
System oscillator input,system frequency adjustable pin
7 CC1 -
Current
control1
8 CC0 -
Current
control0
9 OP1_OUT O
OP1
output
10 OP1_IN I
OP1
input
11 OP2_IN I
OP2
input
12 OP2_OUT O
OP2
output
13
LPF2_IN
I
Low pass filter2 input
14
LPF2_OUT
O Low pass filter2 output
15
LPF1_OUT
O Low pass filter1 output
16
LPF1_IN
I
Low pass filter1 input
Function Description
The T62M99A is an echo/surround effect generator with embedded 48k bits SRAM. It ensures low
distortion as well as low noise for processing audio signal delay. The chip provides two playing
modes(echo and surround) and the playing functional block diagrams are shown as follows.
Surround Mode
Vin LPF1
A/D Delay D/A LPF2
Vout
Echo Mode
Vout
Vin LPF1
A/D Delay D/A LPF2
TE
CH
tm
T62M99A
TM Technology Inc. reserves the right P. 4
Publication Date: JUN. 2004
to change products or specifications without notice.
Revision:B
Electrical Characteristics
Ta=25C
Test Conditions
Symbol Parameter
VDD Conditions
Min. Typ. Max. Unit
V
CC
Operating
Voltage
-
-
4.5 5.0 5.5 V
I
CC
Operating
Current
5V
-
-
15 30 mA
G
V
Voltage
Gain
5V
R
L
=47K
- 0.5 2.5
dB
V
OMAX
Maximum Output Voltage
5V
THD=10%
1.0
1.5
-
Vrms
THD
Total Harmonic Distortion
5V
30KHz L.P.F.
-
0.5
1.5
%
No
Output Noise Voltage
5V
DIN Audio
-
-91
-
dbV
Absolute Maximum Ratings
Supply Voltage .......................................................... -0.3V to 6V
Input Voltage ............................................................ Vss-0.3V to VDD+0.3V
Storage Temperature .................................................... -50C to 125C
Operating Temperature .................................................. -20C to 70C
Note: These are stress ratings only. Stresses exceeding the range specified as "Absolute Maximum
Ratings" may cause substantial damage to the device. Functional operation of this device at other
conditions beyond those listed in the specification is not implied and prolonged exposure to extreme
conditions may affect device reliability.
TE
CH
tm
T62M99A
TM Technology Inc. reserves the right P. 5
Publication Date: JUN. 2004
to change products or specifications without notice.
Revision:B
Application Circuits
0.1uF
10k
4.7uF
560pF
20K
10k
OUTPUT
100uF
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
VCC
REF
AGND
DGND
OSC_O
VCO
CC1
CC0
OP1-OUT
OP1-IN
OP2-IN
OP2-OUT
LPF2-IN
LPF2-OUT
LPF1-OUT
LPF1-IN
18k
AGND
VCC
T62M99A
50K
3
2
1
10uF
0.1uF
3900pF
4.7uF
0.1uF
4.7k
0.082uF
10K
3300pF
560pF
10k
5.6K
0.01uF
10uF
15k
0.082uF
47uF
R
100K
15k
DGND
Echo Mode
INPUT
15K
DGND
0.1uF
47uF
5600pF
INPUT
15K
100K
10uF
15k
15k
0.1uF
OUTPUT
100uF
AGND
10K
4.7uF
0.1uF
560pF
2.7k
0.1uF
VCC
10k
0.01uF
Radj
0.1uF
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
VCC
REF
AGND
DGND
OSC_O
VCO
CC1
CC0
OP1-OUT
OP1-IN
OP2-IN
OP2-OUT
LPF2-IN
LPF2-OUT
LPF1-OUT
LPF1-IN
T62M99A
5600pF
Surround Mode
560pF
Note:"Radj" Value set delay time. R/delay time Reference on Resistance / Delay Time Table.
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