Datasheet IL145567 Datasheet (PCM)

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TECHNICAL DATA

IL145567

PCM CODEC - FILTER

IL145567N is a one-chip PCM-cofidec which converts speech signal into digital form and backwards. The IC is design to operate in synchronous and asynchronous systems and is comprised of:

- reference generator;

- filters on switching capacitors in transmission and receipt channels ;

- two operational amplifiers.

The IC does signal companding under the A-low and full differential processing of analogue signals for reduction of noises. Typical dissipated power is 40mW, under reduced power – 1 mW at ±5 V.

ORDERING INFORMATION

IL145567N Plastic DIP

TA = -40° to 85° C

GSX ANBL MCLK FS CLKSEL Vcc GND V

I-

VF

X

+

VF

X

COMP

VPO+

4 8

VPO−

4 VPI

O 8

VF

R

Active RCfilter of LF

Reference generator

Active RCfilter of LF

5-poles active filter

R-D-to-A

5-poles filter of LF

BB

3-poles filter of HF

С-D-to-A

Storage/hol ding circuit

Note – COMP – comparator

FSR MCLKX BCLKX PDN

X

Multiplexer

/ BCLKR/

R

Control logic

Shift

register

Receivin

g latch

Transmitti ng register

Receiving

register

TSx

Dx

D

R

Figure 1 – Block diagram

1

Pins description

Pin № Symbol Description

01 VPO+ Output of power OA 02 GND Common output 03 04 VPI Input of power OA 05 VFRO Output of digital signal audio frequency 06 Vcc Supply 5 V 07 FS 08 D 09 BCLKR/CLKSEL Input of clock oscillator and selector of basic oscillator frequency 10 MCLKR/PDN Input of main clock oscillator and underconsumption control 11 MCLKx Input of main clock oscillator for transmission

12 BCLKx

13 Dx Output of transmitted digital data 14 FSx Input of transmission cycle synchronisation

15

16 ANBL Input of feedback loop control 17 GSx Output of input OA 18 VFxI- Input of transmitted audio frequency (inverting) 19 VFxI+ Input of transmitted audio frequency (noninverting) 20 V

VPO −

R

TSx

BB

IL145567

Pin arrangement in package

Output of power OA

Input of receipt cycle synchronisation Input of digital data receipt

Input of clock oscillator for data transmission (synchronised with MCLKx)

Output of transmission temporary interval indicator

Supply minus 5 V

2

Supply source

Characteristics

V

Supply voltage of constant current

CC

V

BB

Consumption power in active mode (without load)

VPI = V

BB

Consumption power in sleep mode (without load)

VPI = V

BB

Digital signal strength

(VCC = 5V ± 5%, VBB = -5V ± 5%, GNDA = 0V)

Characteristics Symbol Min Max Unit

Input voltage Low

Input voltage High V Output voltage Low

Output voltage High DX, I

Input current Low Input current High Output current in the third state

D

or

X

I

OL

OH

I

OH

GNDA ≤ V GNDA ≤ V GNDA ≤ D

TS ,

X

= 3.2mA = -3.2mA = -1.6mA

≤ V

in

CC

≤ V

in

CC

≤ V

X

CC

IL145567

min max

4.75

- 4.75

–

V

IL

IH

2.2 -

5.25

- 5.25 70 60

5.0

3.0

-

0.6

0.4

V

OL

V

OH

I

IL

I

IH

I

OZ

-

2.4

-0.5

V

CC

-10

-

+10 +10 +10

Unit

V

mW

V

mkA

3

Dynamic characteristics of digital signals

(VCC = 5V ± 5%, VBB = -5V ± 5%, values of all signals are indicated relatively to GNDA)

Characteristics Symbol min typical max Unit

IL145567

Frequencies of main clock oscillators MCLKX or

MCLK

R

Min width of high or low pulse MCLKX or

MCLK

R

Min width of high or low pulse BCLKX or

BCLK

R

Min width of low pulse FSX or FS

R

t

t Rise time t Fall time t Ratings of data bit synchronisation BCLKX or BCLK Presetting time of from low BCLKX to high MCLK Presetting time from high MCLKX to low BCLK

R

X

t

su(BRM)

t

su(MFB)

Holding time from low BCLKX (BCLKR) to high FSX (FSR) t Presetting time from high FSX (FSR) to low BCLKX (BCLKR) for

t

su(FB)

long frames Delay time from high BCLKX to setting correct data on D

Delay time from high BCLKX to low

TS

X

Delay time of inhibition of output data DX relatively to 8th clock pulse BCLK

X

Time of setting correct data after entry of signals FSX or BCLKX

t

d(BTS)

t

t ( the later of them) Time of presetting data DR relatively to clock pulse BCLK Holding time from low BCLKR to switching off D

R

R edge

Presetting time from high level FSX (FSR) to low level BCLKX (BCLK

) under synchronisation standard Short Frame

R

t

su(DB)

t

Holding time from low level BCLKX (BCLKR) to low level FSX

) for synchronisation Short Frame

(FS

R

Holding time from 2nd period of low level BCLKX (BCLKR) to low level FS

(FSR) for synchronisation Long Frame

X

t

h(BFI)

fm –

1.544

2.048

w(M)

w(B)

w(FL)

r

f

B

100

50

50 ns 50 ns 50 ns

128 4096 kHz

50 – ns 20 ns

h(BF)

20 ns 80

d(BD)

20 140 ns 20

d(ZC)

d(ZF)

50

20

0 – ns

h(BD)

su(F)

t

h(F)

50 ns 50

50

–

– MHz

–

ns

140 ns

ns

50 ns

4

IL145567

Analogue electrical characteristics

(VCC = 5V ± 5%, VBB = -5V ± 5%, VFXI- connected to GSX )

Characteristic min typical max Unit

VF

Input current (-2.5 V ≤ Vin ≤ 2.5 V)

I+, VFXI

X

Input impedance to GNDA at frequency 1 kHz VFXI+, VFXI Input capacitance VFXI+, VFXI Input bias voltage GSX Op Amp VFXI+, VFXI Range of input common-mode voltages VFXI+, VFXI-- 2.5 2.5 V Amplification ratio without feedback GSX Op Amp (R

≥ 10 kOhm)

load

Attenuation factor of in-phase components on out. VFXI+, VFXI- 65 dB Frequency band of unity gain on out. GSX Op Amp (R

≥ 10 kOhm)

load

Equivalent input noise between out. VFXI+, VFXI

- and

GS

X

Load capacitance for GSX Op Amp 0 100 pF Output range of voltages for GS

Output current (-2.8 V ≤ V

≤ 2.8 V)

out

X

R

= 10 kOhm relat. GNDA

load

= 600 Ohm relat. GNDA

R

load

GS

, VFRO ± 5.0 – mA

X

Output impedance on out. VFRO in the frequency range from 0 to 3.4 kHz 1 Ohm Load capacitance for output VFRO 0 500 pF Bias voltage for output VFRO relatively to GNDA – ± 100 mV Noise abatement on supply on transmission (+) – from 0 to 100 kHz; (-) - from 0 to 100 kHz;

– – ± 0.2 mkA

10 – MOhm

-

– 10 pF

-

– ± 25 mV

-

75 – dB

1000 kHz

-20 dBm

- 3.5

- 2.8

45

+ 3.5 + 2.8

V

dB

45

5

c

Analogue transmission characteristics

(VCC = 5 V ± 5%, VBB = -5 V ± 5%, GNDA = 0 V, dBm0 = 1.2276Vrms = 4 dBm with load 600 Ohm,

= FSR = 8 kHz, BCLKX = MCLKX = 2.048 MHz at synchronous operation, VF

FS

X

Through

Characteristic

channel

min max min max min max

Change of amplification ratio (relatively to level 0 dBm0 on frequency 1.02 kHz, T

= 5V, VBB = -5V)

V

CC

Change of amplification ratio depending on temperature

= 25 °С, at

A

0 to 70°С

–40 to + 85°С

Change of amplification ratio depending on supply

voltage (V Change of amplification ratio depending on signal strength (relatively to level -10 dBm0 on frequency 1.02 kHz) * Total distortions of signal at frequency 1 kHz

= 5V, ± 5%, VBB = 5V ±5%)

CC

from –40 to –50 dB from –50 to –55 dB

from 3 to –40 dB

3 dBм0

0 ÷ - 30 dBm0

-40 dBm0

-45 dBm0

-55 dBm0 Total distortions with pseudonoise as per CCITT G.714

-3 dBm0

6 ÷ - 27 dBm0

-34 dBm0

-40 dBm0

-55 dBm0

– – -0.25 0.25 -0.25 0.25 dB

–

– – –

-0.4

-0.8

-1.6

33

0.4

0.8

1.6

– 33 35 29 24 15

27.5

– 28 35

33.1

28.2

13.2

I

connected to GSX)

-

X

Channel AD Channel DA

–

±0.03 ±0.06

–

±0.02 – ±0.02 dB

-0.2

0.2

-0.4

0.4

-0.8

0.8

36 30 25 15

35.5

33.5

28.5

13.5

–

±0.03

–

±0.06

-0.2

-0.4

-0.8

– 33

36 30 25 15

– 28.5

36

34.2 30 15

-0.2

-0.4

-0.8

– dB

IL145567

Unit

dB

Noise of "silent" channel (for trough channel and channel AD psophometrically weighted) Amplitude-frequency characteristi (AFC). (Relatively to level 0 dBm0 at frequency 1.02 kHz) *

15 Hz 50 Hz 60 Hz

200 Hz

from 300 to 3000 Hz

3300 Hz 3400 Hz 4000 Hz

4600 Hz Noise level in the frequency range from 300 to 3000 Hz (relatively to level 0 dBm0 at frequency 1.02 kHz under transmission and receipt) * Attenuation of parasitic harmonics beyond the limits of gating frequency VFRO VFRO

from 4600 to 7600 Hz from 7600 to 8400 Hz

from 8400 to 100000 (Relatively to input signal of frequency 300–3400 Hz and level 0 dBm0)

– -70 – -70 – -83 dBm

– – – –

-0.3

-0.70

-1.6 – –

-40

-30

-26

0.3

-28

-60

–

-40

-0.15

–

-30

-0.15

–

-26

-0.15

–

-1.0

-0.4

-0.15

0.15

-0.15

-0.35

0.15

-0.35

0

-0.8

0

-0.8

–

-14

–

-32

0 0 0 0

0.15

0.15 0

–

-14

–

-30

– -48 – -48 – -48 dB

–

-30

–

-40

–

-30

–

-30

–

-40

–

-30

Hz

dB

6

IL145567

G

m

V

t

continued

Trough

Characteristic

channel

min max min max min max

Noise of "silent" selected channel (for frequency

– -70 – – – -70 dBm 8 kHz. Input – GNDA) Absolute delay (on frequency 1600 Hz) – – – 315 – 215 mks Group delay relatively to signal of frequency 1600 Hz

500 ÷ 600 Hz

– – – 220

600 ÷ 800 Hz

800 ÷ 1000 Hz 1000 ÷ 1600 Hz 1600 ÷ 2600 Hz 2600 ÷ 2800 Hz 2800 ÷ 3000 Hz

Crosstalk of signal of frequency 1020 Hz for AD or DA – – – -75 – -75 dB Intermodulation distortions of two signals with amplitude from minus 4 to minus 21 dBm0 for the range 300 ÷ 3400 Hz

*

Parameters of the channels А/D and D/А are guaranteed by measuring through channel parameters

– -41 – -41 – -41 dB

Channel AD Channel DA

145

75 40

75 105 155

-40

-30

– – – –

–

90 125 175

Unit

mks

Power OA

Characteristic min typical max Unit

Input current (-1 V ≤ VPI ≤ 1V) Input resistance (-1 V ≤ VPI ≤ 1 V)

VPI – –

VPI 5 10 – MOhm Input bias voltage (VPI connected to VPO-) VPI – – ± 50 mV Output resistance VPO–or VPO+ – 1 – Ohm Amplification ratio from VPO– to VPO+ (R

= 300 Ohm, VPO+ to

load

– -1 – V/V

NDA, level on VPO– equals 1.77Vrms, 3 dBm0)

Maximum level 0 dBm0 for better than ± 0.1 dB linearity in the range

ore than from –10 dBm0 to 3 dBm0 (for R

between VPO+ and VPO)

load

R

= 600 Ohm

load

= 1200 Ohm

R

load

= 10 кOhm

R

load

Noise attenuation on supply on Vcc or VBB (VPO- connected to VPI)

PO–or VPO+ connected to GNDA

0 – 4 kHz

4 – 50 kHz

Differential noise attenuation on supply on Vcc or V

(VPO- connected

BB

o VPI), VPO– connected to VPO+ , 0 – 50 kHz

Load capacitance (R

*

dBm0 = 1.2276Vrms = 4 dBm

≥ 300 Ohm )

load

VPO+ or VPO– to GNDA 0 1000

3.3

3.5

4.0

55 35

50

– – Vrms *

dB

± 0.5 mkA

7

IL145567

TSx

MCLK MCLK

BCLK

FSx

Dx

BCLK

FS

R

t

d(BTS)

X

R

t

SU(BRM)

X

t

SU(F)

t

H(BF)

R

t

SU(F)

t

H(BF)

t

1

H(F)

1

H(F)

MSB

2

t

d(BD)

CH1

t

SU(DB)

3

CH2

3

4

t

W(M)

CH3

t

W(M)

t

SU(MFB)

5

67

t

W(B)

t

W(B)

ST1 ST2 ST3

5

67

t

d(ZC)

8

LSB

8

t

d(ZC)

9

D

R

At Short Frame synchronisation, synchronisation pulses FSx or FS

of clock generator MCLK pulses.

Figure 3 – Time diagram at Short Frame synchronisation

MSB

CH1

CH2

t

H(BD)

CH3

ST1 ST2 ST3

should have duration equal to duration

R

t

H(BD)

LSB

8

MCLK MCLK

FSx

IL145567

X

R

t

SU(BRM)

SU(MFB)

BCLK

Dx

BCLK

FS

t

H(BF)

t

SU(FB)

X

1

t

d(ZF)

MSB

R

1

t

SU(FB)

t

H(BF)

R

t

d(ZF)

2

CH1

2

t

H(BFI)

3

t

H(BFI)

t

d(BD)

CH2

t

SU(DB)

4

CH3

5

67

ST1 ST2 ST3

t

H(BD)

5

67

t

d(ZC)

t

H(BD)

8

LSB

8

9

t

d(ZC)

9

D

R

At Long Frame synchronisation, synchronisation pulses FSx or FS

of clock generator MCLK.

MSB

CH1

CH2

CH3

ST1 ST2 ST3

should have duration not less than 3 bits

R

Figure 4 – Time diagram at Long Frame synchronisation

LSB

9

Package Dimension

A

20

1

N SUFFIX PLASTIC DIP

(MS - 001AD)

11

B

10

IL145567

Di mens i on, mm

Symbol MIN MAX

A

B

24.89 26.92

6.10 7.11

F

C

SEATING

-T-

N

G

NOTES:

1.

Dimensions “A”, “B” do not include mold flash or protrusions.

0.25 (0.010) M T

D

PLANE

K

Maximum mold flas h or prot rusion s 0.25 mm (0.010) per s ide.

2.54

7.62

5.33

10

°

C

L

D

F

0.36 0.56

1.14 1.78

G

H

M

H

J

K

L

M

N

0

°

2.92 3.81

7.62 8.26

0.20 0.36

0.38

10