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TECHNICAL DATA
PCM CODEC - FILTER
IL145567
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 FSX FSR CLKSEL Vcc VFXIActive RCfilter of LF GND VBB 3-poles filter of HF
MCLKR/ BCLKR/ MCLKX BCLKX PDN
5-poles active filter of LF
Control logic
TSx
VFX+ COMP VPO+ Reference generator R-D-to-A converter -D-to-A converter 4 8
Shift register
Transmitti ng register
Dx
VPO- 4 VPI VFRO Active RCfilter of LF 5-poles filter of LF
Multiplexer Receivin
Storage/hol ding circuit
8
Receiving register
DR
g latch
Note - COMP - comparator
Figure 1 - Block diagram
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IL145567
Pin arrangement in package
Pins description
Pin 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 Symbol VPO+ GND VPO - VPI VFRO Vcc FSR DR BCLKR/CLKSEL MCLKR/PDN MCLKx BCLKx Dx FSx Description Output of power OA Common output Output of power OA Input of power OA Output of digital signal audio frequency Supply 5 V Input of receipt cycle synchronisation Input of digital data receipt Input of clock oscillator and selector of basic oscillator frequency Input of main clock oscillator and underconsumption control Input of main clock oscillator for transmission Input of clock oscillator for data transmission (synchronised with MCLKx) Output of transmitted digital data Input of transmission cycle synchronisation Output of transmission temporary interval indicator Input of feedback loop control Output of input OA Input of transmitted audio frequency (inverting) Input of transmitted audio frequency (noninverting) Supply minus 5 V
TSx
ANBL GSx VFxIVFxI+ VBB
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IL145567
Supply source Characteristics Supply voltage of constant current
Consumption power in active mode (without load) VPI = VBB Consumption power in sleep mode (without load) VPI = VBB VCC VBB min 4.75 - 4.75 - - max 5.25 - 5.25 70 60 5.0 3.0 Unit V mW
Digital signal strength
(VCC = 5V 5%, VBB = -5V 5%, GNDA = 0V) Characteristics Symbol VIL VIH DX or TSX , IOL = 3.2mA DX, IOH = -3.2mA IOH = -1.6mA GNDA Vin VCC GNDA Vin VCC GNDA DX VCC VOL VOH IIL IIH IOZ Min 2.2 2.4 VCC-0.5 -10 -10 -10 Max 0.6 0.4 +10 +10 +10 Unit
Input voltage Low
Input voltage High Output voltage Low Output voltage High Input current Low Input current High Output current in the third state
V
mkA
3
IL145567
(VCC = 5V 5%, VBB = -5V 5%, values of all signals are indicated relatively to GNDA) Characteristics Frequencies of main clock oscillators MCLKX or MCLKR Symbol fm min - - 1.544 2.048 Min width of high or low pulse Min width of high or low pulse MCLKX or MCLKR BCLKX or BCLKR FSX or FSR tw(M) tw(B) tw(FL) tr tf fB tsu(BRM) tsu(MFB) th(BF) tsu(FB) td(BD) td(BTS) td(ZC) td(ZF) tsu(DB) th(BD) tsu(F) th(F) th(BFI) 100 50 50 50 50 128 50 20 20 80 20 20 50 20 0 50 50 50 - 50 - ns ns ns ns ns kHz ns ns ns ns 140 140 140 140 - ns ns ns ns ns ns ns ns ns MHz typical max Unit
Dynamic characteristics of digital signals
Min width of low pulse Rise time Fall time Ratings of data bit synchronisation BCLKX or BCLKR Presetting time of from low BCLKX to high MCLKR Presetting time from high MCLKX to low BCLKX Holding time from low BCLKX (BCLKR) to high FSX (FSR) Presetting time from high FSX (FSR) to low BCLKX (BCLKR) for long frames Delay time from high BCLKX to setting correct data on DX Delay time from high BCLKX to low TSX Delay time of inhibition of output data DX relatively to 8th clock pulse BCLKX Time of setting correct data after entry of signals FSX or BCLKX ( the later of them) Time of presetting data DR relatively to clock pulse BCLKR edge Holding time from low BCLKR to switching off DR Presetting time from high level FSX (FSR) to low level BCLKX (BCLKR) under synchronisation standard Short Frame Holding time from low level BCLKX (BCLKR) to low level FSX (FSR) for synchronisation Short Frame Holding time from 2nd period of low level BCLKX (BCLKR) to low level FSX (FSR) for synchronisation Long Frame
4096 -
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IL145567
Analogue electrical characteristics
(VCC = 5V 5%, VBB = -5V 5%, VFXI- connected to GSX ) Characteristic VFXI+, VFXIInput current (-2.5 V Vin 2.5 V) Input impedance to GNDA at frequency 1 kHz VFXI+, VFXIInput capacitance VFXI+, VFXIInput bias voltage GSX Op Amp VFXI+, VFXIRange of input common-mode voltages VFXI+, VFXIAmplification ratio without feedback GSX Op Amp (Rload 10 kOhm) Attenuation factor of in-phase components on out. VFXI+, VFXIFrequency band of unity gain on out. GSX Op Amp (Rload 10 kOhm) Equivalent input noise between out. VFXI+, VFXI- and GSX Load capacitance for GSX Op Amp Output range of voltages for GSX Rload = 10 kOhm relat. GNDA Rload = 600 Ohm relat. GNDA GSX, VFRO Output current (-2.8 V Vout 2.8 V) Output impedance on out. VFRO in the frequency range from 0 to 3.4 kHz Load capacitance for output VFRO Bias voltage for output VFRO relatively to GNDA Noise abatement on supply on transmission (+) - from 0 to 100 kHz; (-) - from 0 to 100 kHz; min - 10 - - - 2.5 75 typical - max 0.2 - 10 25 2.5 - Unit mkA MOhm pF mV V dB dB kHz dBm pF V mA Ohm pF mV dB
65 1000 -20 0 - 3.5 - 2.8 5.0 1 0 - 45 45 100 + 3.5 + 2.8 - 500 100
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IL145567
Analogue transmission characteristics
(VCC = 5 V 5%, VBB = -5 V 5%, GNDA = 0 V, dBm0 = 1.2276Vrms = 4 dBm with load 600 Ohm, FSX = FSR = 8 kHz, BCLKX = MCLKX = 2.048 MHz at synchronous operation, VFXI- connected to GSX) Through Channel AD Channel DA channel min max min max min max - - -0.25 0.25 -0.25 0.25 - - - -0.4 -0.8 -1.6 33 35 29 24 15 27.5 35 33.1 28.2 13.2 - - - 0.4 0.8 1.6 - - - - -0.2 -0.4 -0.8 33 36 30 25 15 28 35.5 33.5 28.5 13.5 -
0.03 0.06 0.02
Characteristic Change of amplification ratio (relatively to level 0 dBm0 on frequency 1.02 kHz, TA = 25 , at VCC = 5V, VBB = -5V) Change of amplification ratio 0 to 70 depending on temperature -40 to + 85 Change of amplification ratio depending on supply voltage (VCC = 5V, 5%, VBB = 5V 5%) Change of amplification ratio from 3 to -40 dB depending on signal strength from -40 to -50 dB (relatively to level -10 dBm0 on from -50 to -55 dB frequency 1.02 kHz) * Total distortions of signal at 3 dB0 frequency 1 kHz 0 / - 30 dBm0 -40 dBm0 -45 dBm0 -55 dBm0 Total distortions with pseudonoise -3 dBm0 as per CCITT G.714 6 / - 27 dBm0 -34 dBm0 -40 dBm0 -55 dBm0
Unit dB dB dB dB
- - - -0.2 -0.4 -0.8 33 36 30 25 15 28.5 36 34.2 30 15 -
0.03 0.06 0.02
0.2 0.4 0.8 -
-0.2 -0.4 -0.8 -
dB
-
-
-
dB
Noise of "silent" channel (for trough channel and - channel AD psophometrically weighted) Amplitude-frequency characteristic 15 Hz - (AFC). 50 Hz - (Relatively to level 0 dBm0 at 60 Hz - frequency 1.02 kHz) * 200 Hz - from 300 to 3000 Hz -0.3 3300 Hz -0.70 3400 Hz -1.6 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 from 4600 to 7600 Hz - harmonics beyond the limits of from 7600 to 8400 Hz - gating frequency VFRO VFRO from 8400 to 100000 - (Relatively to input signal of Hz frequency 300-3400 Hz and level 0 dBm0)
-70 -40 -30 -26 - 0.3 0.3 0 -28 -60 -48 -30 -40 -30
-70
-83
dBm dB
- -40 -0.15 0 - -30 -0.15 0 - -26 -0.15 0 -1.0 -0.4 -0.15 0 -0.15 0.15 -0.15 0.15 -0.35 0.15 -0.35 0.15 -0.8 0 -0.8 0 - -14 - -14 - -32 - -30 - -48 - -48 - - - - - - - - - -30 -40 -30
dB dB
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IL145567
continued Characteristic Noise of "silent" selected channel (for frequency 8 kHz. Input - GNDA) Absolute delay (on frequency 1600 Hz) Group delay relatively to signal of frequency 1600 Hz Trough Channel AD Channel DA channel min max min max min max - -70 - - - -70 - - - 315 - 215 Unit dBm mks
- - 220 -40 - mks 500 / 600 Hz - 145 -40 - 600 / 800 Hz 75 -40 - 800 / 1000 Hz 40 -30 - 1000 / 1600 Hz 75 - 90 1600 / 2600 Hz 105 125 2600 / 2800 Hz 155 175 2800 / 3000 Hz Crosstalk of signal of frequency 1020 Hz for AD or DA - - - -75 - -75 dB Intermodulation distortions of two signals with amplitude - -41 - -41 - -41 dB from minus 4 to minus 21 dBm0 for the range 300 / 3400 Hz * Parameters of the channels /D and D/ are guaranteed by measuring through channel parameters
Power OA
Characteristic VPI Input current (-1 V VPI 1V) VPI Input resistance (-1 V VPI 1 V) Input bias voltage (VPI connected to VPO-) VPI Output resistance VPO-or VPO+ Amplification ratio from VPO- to VPO+ (Rload = 300 Ohm, VPO+ to GNDA, level on VPO- equals 1.77Vrms, 3 dBm0) Maximum level 0 dBm0 for better than 0.1 dB linearity in the range more than from -10 dBm0 to 3 dBm0 (for Rload between VPO+ and VPO) Rload = 600 Ohm Rload = 1200 Ohm Rload = 10 Ohm Noise attenuation on supply on Vcc or VBB (VPO- connected to VPI) VPO-or VPO+ connected to GNDA 0 - 4 kHz 4 - 50 kHz Differential noise attenuation on supply on Vcc or VBB (VPO- connected to VPI), VPO- connected to VPO+ , 0 - 50 kHz VPO+ or VPO- to GNDA Load capacitance (Rload 300 Ohm ) * dBm0 = 1.2276Vrms = 4 dBm min - 5 - - - typical - 10 - 1 -1
max 0.5 - 50 - -
Unit mkA MOhm mV Ohm V/V
3.3 3.5 4.0
-
-
Vrms * dB
55 35 dB 50 0 1000
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IL145567
TSx td(BTS) MCLKX MCLKR tSU(MFB) tSU(BRM) BCLKX tW(B) tW(B) tW(M) tW(M) td(ZC)
1 tH(F) tSU(F) tH(BF)
2
3
4
5
6
7
8
9
FSx td(BD) Dx td(ZC) CH2 CH3 ST1 ST2 ST3 LSB
MSB
CH1
BCLKR
1 tH(F) tSU(F) tH(BF)
2
3
4
5
6
7
8
9
tSU(DB)
FSR tH(BD) DR MSB CH1 CH2 CH3 ST1 ST2 ST3 tH(BD) LSB
At Short Frame synchronisation, synchronisation pulses FSx or FSR should have duration equal to duration of clock generator MCLK pulses. Figure 3 - Time diagram at Short Frame synchronisation
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IL145567
MCLKX MCLKR tSU(BRM) FSx tH(BF) tSU(FB) BCLKX 1 td(ZF) Dx MSB CH1 CH2 CH3 ST1 ST2 ST3 LSB tH(BFI) tSU(MFB)
2 td(ZF)
3 td(BD)
4
5
6
7 td(ZC)
8
9 td(ZC)
BCLKR tSU(FB) tH(BF) FSR
1
2
3 tH(BFI)
4
5
6
7
8
9
tSU(DB)
tH(BD) DR MSB CH1 CH2 CH3 ST1 ST2 ST3
tH(BD) LSB
At Long Frame synchronisation, synchronisation pulses FSx or FSR should have duration not less than 3 bits of clock generator MCLK. Figure 4 - Time diagram at Long Frame synchronisation
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IL145567
Package Dimension
N SUFFIX PLASTIC DIP (MS - 001AD)
A
Dimension, mm
20 11 B 1 10
Symbol A B C
MIN 24.89 6.10
MAX 26.92 7.11 5.33
F
L
D F
0.36 1.14 2.54 7.62 0 2.92 7.62 0.20 0.38
0.56 1.78
C -T- SEATING N G D 0.25 (0.010) M T K
PLANE
G H
H J
M
J K L M N
10 3.81 8.26 0.36
NOTES:
1. Dimensions "A", "B" do not include mold flash or protrusions. Maximum mold flash or protrusions 0.25 mm (0.010) per side.
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