GL6551

GL 6551 GL 6551 COMPANDER Description The GL6551 is a compander IC to expand dynamic range at transmission/reception systems and to improve the tone quality by means of restricting noise. Two functions are loaded on the IC, the one is the compressor which has the 2/1 ratio of input/output ratio by logarithm, and the expander which has the 1/w ratio input/ output ratio by logarithm. The GL6551equipped with input & filter Amp, DATA IN OUT terminal. The GL6551 is well suited for use in cellular radio MCA and handy telephone set, radio communication systems. • Low operating supply voltage. • Equipped with mute function and through function. • Equipped with compressor MIC Amp and Expander INPUT Amp • Equipped with Filter Buffer Amp • Equipped with DATA IN OUT terminal. • Operation Voltage (2.4 ~ 7.0V) • Total gain (10~ 100dB) Pin Configuration FIL OUT FIL IN COMP OUT DATA IN C-ACF COMP RECT COMP NF COMP IN COMP REF GND 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCC EXP OUT EXP RECT DATA OUT EXP NF EXP IN EXP REF EXP MUTE THROUGH COMP MUTE Features Maximum Ratings Parameter Supply Voltage Power Dissipation Storage Temperature symbol VCC, MAX PD.MAX TSTG Spec. 10 350 -5 ~ 125 Unit V mW ¡É Remark Operating Conditions Parameter Operating Voltage Operating Temperature symbol VOP TOP Spec. 2.4 ~ 7 -30 ~ 70 Unit V ¡É Remark 1 Block Diagram C-ACF DATA IN COMP IN 5 3.3K 51K 100K 15K 100K MUTE 20K SUM AMP To VREF MIC-AMP To VREF Ith 15K RECTIFIER TH S/W To VREF IDC 100K 30K 30K 4 3 COMP NF 7 8 GAIN CELL 100K COMP IN + + + 2 + − FILTER IN 1 BUFFER AMP FILTER OUT COMPRESSOR EXPANDER 30K 2 6 20K GAIN CELL − + COMP RECT 20 REGULATOR VCC EXP IN 15 + TH S/W 10K RECTIFIER To VREF Ith SUM AMP 9 14 COMP REF EXP NF 16 INPUTAMP MUTE S/W CONTROL EXP REF 17 DATA RECT EXP RECT 18 19 EXP OUT 11 12 13 COMP THROUGH EXP MUTE MUTE 10 GND GL 6551 GL 6551 Electrical Characteristics PARAMETER Current Dissipation Threshold Voltage Compressor Input impedance Input Reference Level Gain Deviation (1) Gain Deviation (2) Through ON OFF Diff. T.H.D Output Noise Voltage Mute Attenuation Limiting Voltage Data Pin Voltage Gain Data Pin Max. Output Cross Talk Buffer Amp (LPF) Voltage Gain Freq. Charact (1) Freq. Charact (2) T.H.D. Maximum Output Voltage Expander Output Reference Volt. Gain Deviation (1) Gain Deviation (2) Gain Deviation (3) Through ON OFF Diff. T.H.D Output Noise Voltage Mute Attenuation Maximum Output Voltage Input Amp Voltage Gain Input Amp Max. Voltage Cross Talk ∗ Ta=25¡ , Vcc=3.0V, f=1kHz, R1=10kΩ É SYMBOL Icc Vth Zinc Vinc ∆Gc1 ∆Gc2 ∆Gtc THDc Vnc Attc Vlimc Gdata VDmax CTc Gb ∆f1 ∆f2 THDb VBmax Voe ∆Ge1 ∆Ge2 ∆Ge3 ∆Gte THDe Vne VEmax Gi VImax CTe SPEC. MIN TYP MAX - 4.0 6.5 0.9 1.15 1.30 90 120 8 12.5 -0.5 0 -1.0 0 -1.5 0 - 0.5 - 3.0 60 80 1.15 1.35 -0.5 0 800 900 - -35 -0.5 0 -3 - -60 - 0.02 550 700 110 130 -0.5 0 -1.0 0 -1.5 0 -2.5 -1 - 0.5 10 60 80 700 800 14.5 15.5 450 500 - -70 17 0.5 1.0 1.5 1.0 5.5 1.5 0.5 -30 0.5 0.1 UNIT mA V KΩ mVrms dB dB dB % mVrms dB Vp-p dB mVrms dB dB dB dB % mVrms CONDITION No Signal 11, 12, 13 Pin Voc=30mVrms, Vin=0dB∗ Vin=-20dB ∗ Vin=-40dB ∗ Vin=-0dB, Pin12=0V∗ Vin=0dB Rg=620Ω ∗ Vin=0dB, Pin11=0V ∗ Pin4=300mVrms THD=10% Point ExpVin=30mVrms,Rg=620Ω ∗ Vin=300mVrms Vin=300mVrms, f=3kHz Vin=300mVrms, f=30kHz Vin=300mVrms THD=10% Point Vin=300mVrms=0dB ∗ Vin=-10dB ∗ Vin=-20dB ∗ Vin=-30dB ∗ Vin=0dB , Pin12=0V ∗ Vin=0dB Rg=620Ω ∗ Vin=0dB, Pin13=0V ∗ THD 10% Point Vin=0dB THD=10% Point CompVin=Vinc,Rg=620Ω ∗ 160 mVrms 0.5 DB 1.0 DB 2.0 DB 0.5 DB 1.5 % 30 uVrms DB - mVrms 16.5 DB - mVrms -60 DB Measured by Noise Filter (CCITT Recommandation P. 53) 3 GL 6551 NO 1 2 3 4 SYMBOL FILTER OUT FILTER IN COMP OUT DATA IN Filter Amp Output Terminal. Filter Amp (+) Input Terminal. Make a various kinds Filters. Compressor Output Terminal. Connected to (-) Input terminal of Compressor Output Amp through resistor Signal which is input to this terminal is output to COMP OUT (Pin3). (not compress) Coupling capacitor connect Terminal. Determined Low cutoff frequency of Compressor block by capacitance. Rectifing Capacitor external connect Terminal. Determined Recovery time and Attack time of Compressor by Capacitance. Input resistor and decoupling capacitor of Compressor Mic Amp external connect Terminal. Determined Mic Amp Gain by resistor. Max gain condition is not connect resistor. Compressor Mic Amp (+) Input Terminal. Same potential with COMP REF (Pin 9). Reference voltage of Compressor Internal Amp Output Terminal. Ground Terminal. “L” state – Compressor Output Mute. Input signal of Data In terminal is output to COMP OUT (Pin3). “H” state – open. “L”state – Compressor and Expander Logalithm 1 (Constant Gain) “H” state – open. “L” state = Expander Output is muting. Data out to DATA OUT (Pin 17) Terminal. “H” state – open. Reference voltage of Expander Internal Amp output Terminal. Expander Input Amp (+) Input Terminal. Expander Input Amp (-) Input Terminal. Expander Input Amp Input Terminal. Rectifing capacitor external connect Terminal. Determine Attack time and Recovery time of Expander by Capacitance. Expander Output Terminal. Power Supply. FUNCTION 5 C-ACF 6 COMP RECT 7 8 9 10 11 12 13 14 15 16 17 18 19 20 COMP NF COMP IN COMP REF GND COMP MUTE THROUGH EXP MUTE EXP REF EXP IN EXP NF DATA OUT EXP RECT EXP OUT Vcc 4 Application Circuit DATA IN ¥ì 100n 5 4 30K 100K 15K MUTE GAIN 20K SUM AMP 100K MIC-AMP 100K 100K 3 10K 10K 470n 100 7 8 CELL To VREF TH S/W 3.3K 51K 30K + 47¥ì + 2 1n 10K 6.8n Comp IN + − AMP To VREF IDC + 1¥ì To VREF Ith RECTIFIER 15K 1 BUFFER AMP Filter OUT COMPRESSOR EXPANDER 30K Exp IN 2.2¥ì 5 6 10K 10K 20K 20 REGULATOR + 4.7 ¥ì VCC 9 V REF C + 4.7 ¥ì 1µ 15 6.8n 10 1n TH S/W GAIN CELL SUM 100K + To VREF Ith 16 INPUTAMP RECTIFIER 10K AMP UTE M 19 S/W CONTROL 14 V REF B AMP 17 18 + 2.2¥ì To VREF (PIN 9) 1¥ì 11 + 1¥ì COMP MUTE 12 13 10 Exp MUTE THROUGH DATA OUT Exp OUT GL 6551