Datasheet M65850P, M65850FP Datasheet (Mitsubishi)

MITSUBISHI SOUND PROCESSOR ICs

SERIES

PRELIMINARY

Notice ; This is not a final specification.

some parametric limits are subject to change.

DIGITAL ECHO(DIGITAL DELAY)

M65850P/FP

SERIES

50

KARAOKE

DESCRIPTION

◊ The M65850P/FP is a CMOS IC for generating echo to be added to the voice through a
"karaoke" microphone.
◊ It is optimal to provide the echo effect function for karaoke player, such as radio cassette
recorders, mini audio components and television sets.
◊ Increased master clock frequency assures high-performance short delay,enabling the IC
to be used for dolby prologic surround system.

PACKAGE

FEATURES

• Built-in input/output filters, A-D and D-A converters,and memory
realize a delay system with only a single chip.

• Built-in current control type clock oscillator circuit avoids clock
affection outside,thus allowing prevention of undesired radiation.

• Delay time = 164 ms (with master clock set at 1MHz)
(Selection of delay time in a range between 15ms and 200ms)

• Small package (14-pin DIP : 14P4,16-pin SOP:16P2N)

• Built-in 20Kbit SRAM

• Built-in auto reset circuit (The IC reset as power is turned on)

• Single power supply (5V)

Outline 1 4 P 4 ( P )

2.54mm pitch 300mil DIP

RECOMMENDED OPERATING CONDITION

Supply voltage range • • • • • Vcc=3.5~5.5V
Rated supply voltage • • • • • • • • • • Vcc=5V

SYSTEM CONFIGURATION

RAM

L

VOCAL
CUT

R

MIC1

MIC AMP

MIC2

MIC AMP

HPF

LPF KEY CONTROL

HPF

MIC VOL

MIX

MIC VOL

M65850P/FP

ECHO VOLECHO

MIX

MIX

Outline 1 6 P 2 N ( FP )

1.27mm pitch 300mil SOP

BASS

BASS

MIX

MIX

MIX

L

R

Note : Dolby is the registered trademarks of dolby laboratories licensing corporation.

MITSUBISHI
ELECTRIC

( / 11 )

1

PRELIMINARY

Notice ; This is not a final specification.

some parametric limits are subject to change.

PIN CONFIGURATION

< M65850P >

DIGITAL ECHO(DIGITAL DELAY)

MITSUBISHI SOUND PROCESSOR ICs

M65850P/FP

50

KARAOKE

SERIES

SERIES

LPF1 IN

LPF1 OUT

OP1 OUT

OP1 IN

GND

< M65850FP >

CC1
CC2

1

14

14

VCC

M 6 5 8 5 0 P

CLOCK

2

3
4
5

6
7

13

REF

12
11

OP2 IN

10

OP2 OUT

9

LPF2 IN

8

LPF2 OUT

NC

LPF1 IN

LPF1 OUT

OP1 OUT

OP1 IN

CC1
CC2

GND

1

M 6 5 8 5 0 F P

14

2

3
4
5
6
7
8

MITSUBISHI
ELECTRIC

NC

16

VCC

15

CLOCK

14

REF

13
12

OP2 IN

11

OP2 OUT

10

LPF2 IN

9

LPF2 OUT

( / 11 )

2

PRELIMINARY

Notice ; This is not a final specification.

some parametric limits are subject to change.

IC INTERNAL BLOCK DIAGRAM

< M65850P >

12

REF

1/2 Vcc

DIGITAL ECHO(DIGITAL DELAY)

CLOCK

13

OSCILLATOR

CLOCK

AUTO
RESET

RESET

M65850P/FP

OP2IN OP2OUT LPF2IN LPF2OUT

CC2

6

D / A

DO1

MAIN CONTROL

D1 DO0

MITSUBISHI SOUND PROCESSOR ICs

SERIES

SERIES

50

KARAOKE

891011

LPF2

MO

M I

20Kbit
SRAM

LPF1

1 142 3 4 5

< M65850FP >

13

REF

1/2 Vcc

NC

NC

16

1

AUTO
RESET

LPF1

LPF1OUTLPF1IN

CLOCK

14

OSCILLATOR

RESET

CLOCK

A / D

OP1INOP1OUT

CC2

OP2IN OP2OUT LPF2IN LPF2OUT

7

DO1

MAIN CONTROL

D1 DO0

A / D

CC1

D / A

MO
M I

7

GND

LPF2

20Kbit
SRAM

VCC

9101112

2 153 4 5 6

LPF1OUTLPF1IN

OP1INOP1OUT

MITSUBISHI
ELECTRIC

CC1

8

GND

VCC

( / 11 )

3

PRELIMINARY

Notice ; This is not a final specification.

some parametric limits are subject to change.

PIN DESCRIPTION

Pin No.

DIGITAL ECHO(DIGITAL DELAY)

MITSUBISHI SOUND PROCESSOR ICs

M65850P/FP

50

KARAOKE

SERIES

SERIES

P FP
1
2

3
4
5

6
7
8

9
10
11

10
11

12

Symbol Name

2
3
4

5
6
7

8
9

LPF1 IN
LPF1 OUT
OP1 OUT

OP1 IN

CC1

CC2

GND

LPF2 OUT
LPF2 IN

OP2 OUT

OP2 IN

Low pass filter 1
input

Low pass filter 1
output

Operational

amplifier1 output

Operational

amplifier 1 input

Current control 1

Current control 2

GND

Low pass filter 2
output

Low pass filter 2
input

Operational

amplifier 2 output
Operational

amplifier 2 input

I/O

Function

I

To form input-side low pass filter by
connecting external capacitor and resistor

O
O

To form A-D conversion integrator by
connecting external capacitor

I

ADM control of A-D converter

-

ADM control of D-A converter

-

-

O

To form input-side low pass filter by
connecting external capacitor and resistor

I

O

To form D-A conversion integrator by
connecting external capacitor

I

I

12
13

14

-

13
14

15

1

16

REF

CLOCK

VCC

NC

Reference

Clock generator

input

Supply voltage

No connection -

MITSUBISHI
ELECTRIC

Analog reference voltage 1/2Vcc

-

To form clock generator by connecting

I

external resistor

To apply 3.5 ~ 5.5 V power

-

(Rated voltage : 5 V)

•

•

( / 11 )

4

PRELIMINARY

Notice ; This is not a final specification.

some parametric limits are subject to change.

ABSOLUTE MAXIMUM RATINGS

DIGITAL ECHO(DIGITAL DELAY)

MITSUBISHI SOUND PROCESSOR ICs

M65850P/FP

50

KARAOKE

( Ta = 25°C, unless otherwise noted )

SERIES

SERIES

Symbol Parameter Ratings Unit

Vcc Supply voltage

Icc

Pd
Topr
Tstg

Circuit current

Power dissipation

Operating temperature

Storage temperature

Conditions

6.0

100

800(P),550(FP)

-20 ~ 75

-40 ~ 125

RECOMMENDED OPERATING CONDITION

Limits

Symbol Parameter

Vcc

Supply Voltage

fck Clock frequency

Conditions

Min Typ Max

3.5

5

5.5

0.8 11.0

V

mA

mW

°C
°C

Unit

V

MHz

ELECTRICAL CHARACTERISTICS

(Vcc=5V,f=1kHz,Vi=100mV(rms),fck=1MHz,Ta=25°C, unless otherwise noted)

Limits

Symbol

Icc

Gv

Vomax

THD

No
fck

Parameter

Circuit current

Voltage gain

Maximum output

voltage

Total harmonic

distortion

Output noise voltage

Clock frequency

Test conditions

No signal input
RL=47kΩ

THD=10%
30kHz LPF

DIN-AUDIO
Rc=120kΩ

MITSUBISHI
ELECTRIC

Min Typ

5

-3.0 3.0

0.7

13

0

1.0

1.2

-85

0.85 1.15

1

Max

25

Unit

mA

dB

V(rms)

3.0

-70

%

dBV

MHz

( / 11 )

5

MITSUBISHI SOUND PROCESSOR ICs

PRELIMINARY

Notice ; This is not a final specification.

some parametric limits are subject to change.

DIGITAL ECHO(DIGITAL DELAY)

M65850P/FP

FUNCTION DESCRIPTION

(1) Delay time Td

The delay time can be calculated by the equation :
Td=8N / fck ( N=the number of memory bits=20480 )
When fck=1MHz ( fs=125kHz), Td can be set at 164ms.

« Reference »
The M65850P/FP adopts ADM ( Adaptive Delta Modulation ) system in A-D,D-A
converters.
The sampling frequency can be calculated by the following equation :
fs=clock frequency / 8 ( Hz )
For clock frequency ( fck )=1MHz, the calculated sampling frequency is :
fs=1MHz / 8 =125kHz

50

KARAOKE

SERIES

SERIES

(2) Clock oscillator circuit

The M65850P incorporates a current control type clock
oscillator circuit in it, thus providing circuit configuration just by
connecting a resistor for current control to pin 13 ( FP:pin 14 )
CLOCK.
Fully internal clock supply prevents occurrence of undesired
radiation without affecting any external circuit.

The oscillator frequency is:
fck = 1 MHz. ( Rc=120kΩ )

The resistor for current control can be calculated using the
following equation.
Rc K/Clock frequency (fck) [ Hz ]

K is the coefficient, and changes according to clock frequency
,as shown below.

Delay Time

( ms )

15~30

•

•

Clock Frequency
( Hz )

11.0M~5.5M

K value

11

0.8 X 10

Rc

Vcc

*

13

(FP:14)

*

Rc ( Ω )

7.5k~15k

Clock
oscillator
circuit

Clock
frequency : fck

31~100

101~200

5.3M~1.64M

1.62M~800K

1.0 X 10

1.2 X 10

MITSUBISHI
ELECTRIC

11

11

18k~62k

75k~150k

( / 11 )

6

PRELIMINARY

Notice ; This is not a final specification.

some parametric limits are subject to change.

(3) Input/output LPF

It is necessary to change the LPF setting ( signal pass band,fsig )
of digital echo according to the clock frequency. ( Refer to the table below )

DIGITAL ECHO(DIGITAL DELAY)

MITSUBISHI SOUND PROCESSOR ICs

M65850P/FP

50

KARAOKE

SERIES

SERIES

(FP:2)

*

R1

LPF1

REF

1 2

R2

* *

C2

R1

C1

•

fsig=

••

(FP:3)

*

1

2π C1 • C2 • R1 • R2

REF

(FP:10)

*

R2

R1

LPF2

* *

9 8

C1

C2

R1

(FP:9)

*

Delay time
( ms )

15~30

31~100

101~200

Clock
frequency( Hz )

11.0M ~ 5.5M

5.3M ~ 1.64M

1.62M ~ 800k

•Test Condition is Vcc=5V,Vi=100mV(rms),f=1kHz,Ta=25°C

signal pass
band ( Hz )

7k
5k

3k

LPF

R1( Ω ) R2 ( Ω ) C1 (F) C2 (F)

15k
13k
16k

MITSUBISHI
ELECTRIC

15k
13k
16k

3300p

4700p

6800p

680p

1000p
1500p

Distortion

(Reference value)

(%)

0.2%

(Td=20ms)

0.3%

(Td=50ms)

1.2%

(Td=160ms)

( / 11 )

7

PRELIMINARY

Notice ; This is not a final specification.

some parametric limits are subject to change.

(4) Mute

When power is turned on, the mute function works automatically to
prevent noise generation. (Here, however, "mute" means the
function which prevents noise generation after the reset time.)

DIGITAL ECHO(DIGITAL DELAY)

MITSUBISHI SOUND PROCESSOR ICs

M65850P/FP

50

KARAOKE

SERIES

SERIES

POWER
ON TIME

RESET
PERIOD

TEST CONDITIONS

ParameterSymbol

Icc
Gv

Vomax

Maximum output voltage

Circuit current

Voltage gain between

input and output

MUTE PERIOD

(ABOUT 260ms)

WHEN POWER IS ON (fck=1MHz)

S 1 S 1 4

2
1
1

MUTE
OFF TIME

2
1
1

Remarks

No-signal time

RL=47kΩ

THD=10%

THD

No

Output distortion

Output noise voltage

MITSUBISHI
ELECTRIC

1
2 1

1

30kHz LPF

DIN-AUDIO

( / 11 )

8

PRELIMINARY

Notice ; This is not a final specification.

some parametric limits are subject to change.

TEST CIRCUIT

< M65850P >

DIGITAL ECHO(DIGITAL DELAY)

MITSUBISHI SOUND PROCESSOR ICs

M65850P/FP

50

KARAOKE

SERIES

SERIES

47µ

(2)

(1)

(2)

S14

(1)

0.1µ

+

16k

51

16k

1µ

+

S1

6800p

~

Vi

120k

14

VCC

LPF1 IN

1

1500p

16k

47µ

13

CLOCK

LPF1 OUT

2

+

12

REF

OP1 OUT

3

0.068µ

0.068µ

11

OP2 INOP1 IN

4

0.22µ

16k

16k

10

OP2 OUT

CC1

5

0.22µ

6800p

16k

1500p

9

LPF2 IN

CC2

6

8

LPF2 OUT

GND

7

47k

+

1µ

~

Vo

< M65850FP >

47µ

(2)

(1)

(2)

S14

(1)

16k

120k

15

VCC

LPF1 IN

2

1500p

16k

47µ

14

CLOCK

LPF1 OUT

3

0.1µ

+

16

NC

NC

1

51

16k

1µ

+

S1

6800p

~

Vi

0.068µ

+

13

REF

OP1 OUT

4

0.068µ

12

OP2 INOP1 IN

5

0.22µ

16k

16k

11

OP2 OUT

CC1

6

0.22µ

6800p

16k

1500p

10

LPF2 IN

CC2

7

9

LPF2 OUT

GND

8

47k

+

1µ

~

Vo

Units
Resistance : Ω

Capacitance:F

MITSUBISHI
ELECTRIC

9

( / 11 )

MITSUBISHI SOUND PROCESSOR ICs

PRELIMINARY

Notice ; This is not a final specification.

some parametric limits are subject to change.

DIGITAL ECHO(DIGITAL DELAY)

M65850P/FP

APPLICATION EXAMPLE

• ECHO Delay time 164ms (Signal pass band 3kHz)
< M65850P >

50

KARAOKE

SERIES

SERIES

+

47µ

IN

1µ

< M65850FP >

47µ

OUT

+

1µ

OUT

+

1µ

12

16k

16k

10

OP2 OUT

CC1

5

0.22µ

16k

16k

11

6800p

16k

1500p

9

LPF2 IN

CC2

6

1500p

8

LPF2 OUT

GND

7

FEEDBACK GAIN SETTING VOLUME

6800p

16k

10

9

0.068µ

0.1µ

16k
16k

+

6800p

0.1µ

+

16

120k

14

VCC

LPF1 IN

1

1500p

16k

120k

15

47µ

+

13

CLOCK

LPF1 OUT

12

REF

OP1 OUT

2

3

0.068µ

0.015µ 50k

47µ

+

13

14

11

OP2 INOP1 IN

4

0.22µ

0.068µ

IN

1µ

+

NC

NC

1

6800p

16k

16k

VCC

LPF1 IN

2

1500p

16k

REF

CLOCK

LPF1 OUT

OP1 OUT

3

4

0.068µ

0.015µ 50k

MITSUBISHI
ELECTRIC

OP2 INOP1 IN

5

0.22µ

OP2 OUT

CC1

6

0.22µ

LPF2 IN

CC2

LPF2 OUT

GND

7

8

Units
Resistance : Ω

Capacitance : F

FEEDBACK GAIN SETTING VOLUME

( / 11 )

10

MITSUBISHI SOUND PROCESSOR ICs

PRELIMINARY

Notice ; This is not a final specification.

some parametric limits are subject to change.

DIGITAL ECHO(DIGITAL DELAY)

M65850P/FP

• SURROUND Delay time 20ms ( Signal pass band 7kHz )
< M65850P >

50

KARAOKE

SERIES

SERIES

+

47µ

IN

1µ

< M65850FP >

47µ

OUT

+

1µ

11k0.1µ

14

VCC

LPF1 IN

1

47µ

+

13

REF

CLOCK

LPF1 OUT

OP1 OUT

2

12

3

0.047µ

11

OP2 INOP1 IN

4

15k

15k

10

OP2 OUT

CC1

5

3300p

15k

680p

9

LPF2 IN

CC2

6

LPF2 OUT

GND

7 8

680p

15k
15k

+

0.047µ

0.15µ

0.15µ

15k

3300p

0.047µ

15k

3300p

15k

0.1µ

+

16

NC

11k

15

VCC

47µ

14

CLOCK

+

13

REF

12

OP2 INOP1 IN

15k

11

OP2 OUT

680p

10

LPF2 IN

9

LPF2 OUT

OUT

+

1µ

IN

1µ

+

NC

1

15k
15k

3300p

LPF1 IN

2

680p

15k

LPF1 OUT

OP1 OUT

3

0.047µ

4

5

0.15µ

MITSUBISHI
ELECTRIC

CC1

6

0.15µ

CC2

7

GND

8

Units
Resistance : Ω

Capacitance : F

( / 11 )

11