GL6962 Hynix Semiconductor, GL6962 Datasheet

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GL6962

Manufacturer Part Number
GL6962
Description
GL6962Low Voltage Universal Speech Network
Manufacturer
Hynix Semiconductor
Datasheet

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Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
GL6962A
Manufacturer:
DG
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6 222
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Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
GL6962AD
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LG
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Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
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GL6962D
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Description
The GL6962 and GL6962A are bipolar integrated
circuits that perform all speech and line interface
functions required in fully electronic telephone sets.
They perform electronic switching between dialing
and speech. The ICs operate at line voltage down
to 1.6V DC (with reduced performance) to
facilitate the use of more telephone sets connected
in parallel.
Features
dynamic, magnetic or piezo-electric microphones
(excluding polarity guard)
resistance
for electric microphones
(GL6962)
(GL6962A)
piezo-electric earpieces.
earpiece amplifiers.
Line loss compensation (line current dependent)
for microphone and earpiece amplifiers
Gain control curve adaptable to exchange supply
Low DC line voltage: operates down to 1.6V
Voltage regulator with adjustable static
Provides a supply for external circuits
Symmetrical high-impedance inputs (64k¥ Ø ) for
Asymmetrical high-impedance inputs(32k¥ Ø )
DTMF signal input with confidence tone
MUTE input for pulse or DTMF dialing
Receiving amplifier for dynamic, magnetic or
Large gain setting ranges on microphone and
DC line voltage adjustment facility
Packaged in 16 DIP/SOP.
MUTE
input for pulse or DTMF dialing
1
Low Voltage Universal Speech Network
PIN Configuration
TGA1
TGA2
MIC+
MIC-
RGA
QR
LN
I
* Pin 12 is active LOW(MUTE) for GL6962A
ref
GL6962/GL6962A
1
2
3
4
5
6
7
8
(TOP View)
GL6962
GL6962/GL6962A
16
15
14
13
12
11
10
9
DTMF
V
MUTE
IR
REG
V
SLPE
AGC
EE
CC

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GL6962 Summary of contents

Page 1

... Gain control curve adaptable to exchange supply DC line voltage adjustment facility Packaged in 16 DIP/SOP. GL6962/GL6962A Low Voltage Universal Speech Network PIN Configuration (TOP View TGA1 2 TGA2 GL6962 RGA 5 MIC- 6 MIC ref * Pin 12 is active LOW(MUTE) for GL6962A 1 GL6962/GL6962A SLPE 16 15 AGC REG MUTE 12 DTMF ...

Page 2

... Block Diagram MIC MIC DTMF (1) 12 MUTE SUPPLY & REFERENCE CURRENT REFERENCE Pin 12 is active LOW ( MUTE RGC RM TGC + MUTE CONTROL RM RGC TGC Ó CURRENT CONTROL 15 AGC ref ) for GL6962A. 2 GL6962/GL6962A RGA - TGA1 - + 3 TGA2 LOW VOLTAGE CIRCUIT 14 16 REG SLPE ...

Page 3

... MUTE REG 15 AGC 16 SLPE (1) Pin 12 is active LOW ( MUTE ) for GL6962A. DESCRIPTION Positive line terminal Gain adjustment: transmitting amplifier Gain adjustment: transmitting amplifier Non-inverting output: receiving amplifier Gain adjustment: receiving amplifier Inverting microphone input Non-Inverting microphone input Current stabilizer Negative line terminal ...

Page 4

... Absolute Maximum Ratings SYMBOL PARAMETER V Positive continuous line voltage LN I Line Current line Note1 GL6962 ; GL6962A V Input voltage on all other pins i Positive input voltage Negative input voltage P Total power dissipation tot Note2 GL6962 ; GL6962A T Operating ambient temperature amb T Storage temperature stg Maximum Ratings are those values beyond which damage to the device may occur ...

Page 5

... VA k§ Ù R (REG to SLPE)= 2. 15mA line MUTE = HIGH IP = 1.2mA IP = 0mA = LOW MUTE IP = 1.2mA IP = 0mA Between MIC- and MIC+ MIC- or MIC 15mA line k§ Ù with f = 300 and 3400 GL6962/GL6962A MIN TYP MAX UNIT - 1 1 3.55 4.0 4.25 V 4.9 5 ...

Page 6

... Receiving amplifier input IR (pin 10 Input impedance i Receiving amplifier output QR (pin Output impedance o G Voltage gain from ¥ Ä G Gain variation with frequency referred to vf 800Hz GL6962/GL6962A CONDITION MIN TYP - 15mA 24.0 25.5 line k§ Ù ¡ ¾ 300 and 3400 - Hz 0.2 ...

Page 7

... Reduction of gain G Voltage gain from DTMF GL6962 GL6962A Automatic gain control input AGC (pin 15) ¥ Ä G Controlling the gain from and the v gain from MIC+, MIC Gain control range GL6962/GL6962A CONDITION MIN TYP THD = 2 % sinewave drive ; R4 = 100k¥ Ø 15mA ; I = 0mA ; line p = 150 ¥ ...

Page 8

... For measuring gain from MIC+ and MIC-, the MUTE input should be LOW or open-circuit. For measuring the DTMF input, the MUTE input should be HIGH. Inputs not being tested should be open-circuit. Fig. 1 Test circuit for defining GL6962 voltage gain of MIC+, MIC- and DTMF inputs. (Voltage gain is defined 620¥ ...

Page 9

... For measuring gain from MIC+ and MIC-, the For measuring the DTMF input, the Inputs not being tested should be open-circuit. Fig. 2 Test circuit for defining GL6962A voltage gain of MIC+, MIC- and DTMF inputs. (Voltage gain is defined 620¥ Ø ...

Page 10

... R4 C4 100k¥ Ø 100pF 140mA Fig. 3 Test circuit for defining GL696 (Voltage gain is defined 20log | R1 620¥ Ø GL6962 MIC+ MIC- SLPE TGA1 REG AGC ¥ Ø 4.7•F + 100pF ¥ Ø GL6962/GL6962A 11 DTMF + ref EE C1 100• ¥ Ø ...

Page 11

... I line + 100• 600¥ Ø + 10µ 100k 100pF 140mA Fig. 4 Test circuit for defining GL6962A voltage gain of receiving amplifier. (Voltage gain is defined 620¥ Ø GL6962A RGA MIC+ MIC- SLPE TGA1 TGA2 REG AGC 68k¥ Ø 4.7•F + 100pF ...

Page 12

... Pin 12 is active LOW ( Fig. 5 Typical application of GL6962, shown there with piezo-electric earpiece and DTMF dialing. (The diode bridge, the zener diode and R10 limit current into, and the voltage across, the circuit during line transients. A different protection requirement is required for pulse dialing or register recall ...

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