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| TDA7237 QUAD DIFFERENTIAL LINE DRIVER PRODUCT PREVIEW DESCRIPTION The quad differential line driver is a monolithic integrated circuit intended to provide low noise, low distortion voltage gain. Additionally, the signal is converted from a single ended to a differential signal pair for applications reuiring signal isolation from DC grounded. The four channel's gains are matched within 1dB. DIP18 ORDERING NUMBER: TDA7237 BLOCK DIAGRAM VCC 10F C(ext) 18 BIAS GENERATOR 17 16 CH1 15 10F CH1I GND 3 5 CH1Iout CH1Nout CH2I 10F 4 14 CH2 13 CH2Iout CH2Nout CH3I 10F 7 12 CH3 11 CH3Iout CH3Nout CH4I 10F 8 1,2,6 N.C. 10 CH4 9 CH4Iout CH4Nout D95AU385 November 1995 1/5 This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice. TDA7237 ABSOLUTE MAXIMUM RATINGS Symbol VS Ptot Tamb Tstg Supply Voltage Total Power Dissipation Operating Ambient Temperature Storage Temperature Parameter Value 20 750 -40 to 85 -55 to 150 Unit V mW C C PIN CONNECTION N.C. N.C. CH1I CH2I GND N.C. CH3I CH4I CH4NO 1 2 3 4 5 6 7 8 9 D95AU386 18 17 16 15 14 13 12 11 10 CEXT VS CH1IO CH1NO CH2IO CH2NO CH3IO CH3NO CH4IO THERMAL DATA Symbol Rth j-pins Parameter Thermal Resistance junction - pins Value 90 Unit C/W PIN FUNCTIONS N. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 2/5 Name N.C. N.C. CH1I CH2I GND N.C. CH3I CH4I CH4NO CH4IO CH3NO CH3IO CH2NO CH2IO CH1NO CH1IO VS CEXT Function Input to channel one Input to channel two Ground Input to channel three Input to channel four Channel four non inverting output Channel four inverting output Channel three non inverting output Channel three inverting output Channel two non inverting output Channel two inverting output Channel one non inverting output Channel one inverting output Supply Voltage By-pass Capacitor TDA7237 ELECTRICAL CHARACTERISTICS (VCC = 10V; Tamb = 25C; f = 1KHz, unless otherwise specified.) Symbol VS ZI SVR Isg Parameter Supply Voltage Input Impedance Supply Voltage Rejection Output Short Circuit Current to GND Output Short Circuit Current to VCC Is SR S/N THD CS VIDC VODC VCDC ZO Gv Notes: 1) Bw = 20Hz to 20KHz with 60dB/decade Rolloff (referred to 1.4VRMS) 2) All input AC grounded via 10F capacitor Test Condition Min. 9 15 Typ. 23 45 40 300 20 150 35 3 Max. 11 30 Unit V K dB mA mA mA mA f = 10KHz each pin all pins each pin all pins RL = 10KW; CL = 1000pF 35 Supply Current Slew Rate Signal to Noise Ratio (1) Total Harmonic Distortion Channel Separation DC Input Voltage DC Output Voltage DC Cext Voltage Output Impedance Voltage Gain 50 mA V/s dB % dB 83 VO = 4VRMS; RL = 10KW; CL = 1000pF (2) 70 5.8 pin 18 3.9 5.8 15.9 91 0.07 80 6.25 4.75 6.25 50 16.7 0.1 6.6 5.3 6.6 100 17.5 V V V dB 3/5 TDA7237 DIP18 PACKAGE MECHANICAL DATA mm MIN. a1 B b b1 D E e e3 F I L Z 3.3 1.34 8.5 2.54 22.86 7.1 3.93 0.130 0.053 0.254 1.39 0.45 0.25 25.4 0.335 0.100 0.900 0.280 0.155 1.65 TYP. MAX. MIN. 0.010 0.055 0.018 0.010 1.000 0.065 inch TYP. MAX. DIM. 4/5 TDA7237 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. (c) 1995 SGS-THOMSON Microelectronics All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A. 5/5 |
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