CXA1511L/M Preamplifier for Remote Control Signal Reception Description The CXA1511L/M is a bipolar IC used for preamplifiers that receive signals in infrared remote control systems. These ICs consist of a first-stage amplifier, limiter amplifier, band-pass filter, band elimination filter, signal waveform detection circuit and waveform shaping circuit. 8 pin SIP (Plastic) Features • Low power consumption (VCC = 5V, 9mW typ.) • Low supply voltage (VCC = 5V) • Filters (center frequency can be varied through external resistor: fo = 30kHz to 60kHz, 40kHz typ.) • Elimination of inductors prevents magnetic field inductance interference. • Optical reception diode can be coupled directly. • Collector output (pull-up resistor, TTL and CMOS can be connected directly) 8 pin SOP (Plastic) Absolute Maximum Ratings 7 V • Supply voltage VCC • Operating temperature Topr –20 to +75 °C • Storage temperature Tstg –65 to +150 °C • Allowable power dissipation PD 600 mW (SIP) • Allowable power dissipation PD 300 mW (SOP) Operating Conditions • Supply voltage Applications TVs, VCRs, audio equipment 4.7 to 5.3 V Structure Bipolar silicon monolithic IC Block Diagram and Pin Configuration Head Amp IN Limiter Amp BPF Delector & Hysteresis BEF Comparator Integralor Comparator 1 ABLC Photo Diode 3 4 5 6 C2 GND fo N.C. 2 C1 7 8 OUT VCC 470, 680 0.01µ 0.01µ 200k (fo = 40kHz) VCC = 5V Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. –1– E94301A8X CXA1511L/M Pin Description Pin No. 1 Symbol IN Pin voltage depends on the DC Characteristics Measurement Circuit. Pin voltage Equivalent circuit Description Input pin. Connect optical reception diode to GND. 2.8V 47k 160k VCC 1 2 C1 2.8V 8k VCC 40µA↓ ↓40µA 2 8k VCC 330k 3 C2 1.9V 30nA↓ ↓30µA 8k 3 4 GND fo Connect a detection capacitor to GND. When the capacitor is large, sensitivity decreases in relation to the mean value detection and transient response. When the capacitor is small, fluctuation of the peak detection and output pulse width increases. The capacitor in usage is 0.01µF (typ.). Set output pulse width fluctuation and noise elimination characteristics to be optimum. GND pin. Adopt a pattern design that will allow external parts to be located as closely as possible to this pin. Ground them all at the same point. The transport distance and noise elimination characteristics are greatly influenced by the pattern design surrounding the GND. VCC 5 5 Connect a resistor and capacitor in series to GND, and set the frequency response and gain of "Head Amp". When the resistor is large and the capacitor small, the gain is small. When the capacitor is large, sensitivity decreases in relation to the transient response. VCC 1.4V 4p 8k –2– Connect a resistor to the power supply. Set the center frequency of the built-in BPF. See "External resistor at Pin 5 vs. Center frequency response" on Page 6. CXA1511L/M Pin No. 6 Symbol Pin voltage Equivalent circuit Description No connected pin. Connect to GND. N.C. VCC 24k 5.0V (High) 7 30k OUT Output pin. 7 0.6V (Low) 14k 30k 8 VCC 5.0V Supply voltage pin. DC Characteristics Measurement Circuit (CXA1511L) (CXA1511M) CXA1511L 1 2 3 4 5 200k 5V 6 7 8 8 470 7 6 5 200k CXA1511M 0.01µ 0.01µ 2 1 5V 3 470 0.01µ 0.01µ –3– 4 L level output voltage Voltage gain BPF characteristics (1) BPF characteristics (2) Input impedance Detecting ability 3 4 5 6 7 8 –4– S2, 5, 6, 9 S2, 5, 6, 9 S2, 5, 6, 9 S3, 7, 8 S1, 2, 3, 4, 7 S1, 3, 7 ON-SW D C Note 3) rin= 47kΩ [kΩ] (Vi/Vx) –1) A2=20log S3, 7 S2, 5, 6, 7 A B B B C A A Measurement point Note 2) The level ratio between AC level at 40kHz and that at 48kHz is taken A2 [dB]. 60µVp-p 200mVp-p S1, 2, 6, 7 40µVp-p 40µVp-p 30µVp-p Level A1=20log Icc burst wave 40kHz CW rin Det 40kHz, 48kHz CW 30kHz, 37kHz CW 40kHz CW Signal Measurement condition AVQ2 AVQ1 AV VOL VIN2 VIN1 Symbol Note 1) The level ratio between AC level at 37kHz and that at 30kHz is taken A1 [dB]. Current consumption Input pin voltage (2) 2 9 Input pin voltage (1) Item 1 No. Electrical Characteristics 0.6 — 1.8 2.8 mA Remarks Burst wave signal with a 1.2ms, 40kHz cycle is input. Note 3) Input level is taken Vi and measuring value is taken Vx. Note 2) Note 1) 100µA is flown out from Pin 1. measuring value (f = 40kHz) measuring value (f = 48kHz) measuring value (f = 37kHz) measuring value (f = 30kHz) 1.0 µs 440 550 770 dB dB dB V V V kΩ — — 85 1.3 1.8 3.3 64 40 19 5 31 10 5 81 1.2 0.6 75 2.8 2.3 Min. Typ. Max. Unit (VCC = 5V, Ta = 25°C) CXA1511L/M CXA1511L/M Electrical Characteristics Measurement Circuit 2 1 3 4 6 5 D 8 7 470 0.01µ S1 S2 S3 C 0.47µ A S7 S8 S9 R6 47k S4 330k S6 0.47µ I1 100µA E2 5.0V 200k S5 0.01µ B SG 50 E1 1.0V Application Circuit (CXA1511L) (CXA1511M) 47 +5V 47µ 200k 1% (fo = 40kHz) CXA1511L 1 2 4 3 470, 680 5 6 7 OUT 8 8 200k OUT 1% (fo = 40kHz) Photo Diode 0.01µ 5 CXA1511M 47 PH302B 6 7 0.01µ 47µ 1 +5V Photo Diode 2 3 4 470, 680 PH302B 0.01µ 0.01µ Description of Operation (See the Block Diagram.) Receives infrared signals transmitted from the infrared remote control commander with a photodiode to output them as rectangular waves. I/O pin Pin 1 Input waveform Waveform 40µVp-p to 2.5Vp-p Hysteresis comparator input waveform Pin 7 Output waveform Converts the signal current of a photodiode into voltage and amplifies it. AAA AA AAA AA AAAAA 600µs Pin 3 BPF output waveform Operation typ. 40kHz (typ.) Suppresses the noise component with BPF and BEF. Detects the signal component and performs wave detection. 5V 0.6V (typ.) –5– Integrates the signal component and outputs it as rectangular wave from the hysteresis comparator. CXA1511L/M Example of Representative Characteristics External resistor at Pin 2 vs. AV1 characteristics VCC vs. ICC characteristics VIN = 50µVp-p (Pin 1) f = 40kHz Ta = 25°C VCC = 5V –5 Ta = 25°C 2.0 ICC [mA] BPF relative voltage gain [dB] (Pin 3) 0 –10 1.5 –15 –20 100 1.0 1k 10k External resistor at Pin 2 [Ω] 4.0 5.0 6.0 VCC [V] I1 vs. VIN2 characteristics Ta = 25°C VCC = 5V Input voltage at Pin 1 vs. Output voltage at Pin 3 characteristics VIN2 [V] 1 3 2 0.5 1 0 0.1 10µ 100µ VIN 1m [Vp-p] (Pin 1 input) 10m 10 I1 [µA] 1 100m 100 80 Ta = 25°C VCC = 5V Center frequency [kHz] 70 60 50 Ta = 25°C VCC = 5V VIN = 50µVp-p (Pin 1) 80 60 40 20 40 30 100 External resistor at Pin 5 vs. Center frequency response f vs. AV1 characteristics Av1 [dB] BPF output (Pin 3) 5 4 f = 40kHz Ta = 25°C VCC = 5V 10 20 30 40 0 100 0 100 200 300 400 External resistor at Pin 5 [kΩ] f [kHz] –6– CXA1511L/M Package Outline Unit: mm CXA1511L 8PIN SIP (PLASTIC) + 0.5 19.0 – 0.2 8 2.54 8.3 MAX 3.0 1 1.2 MIN + 0.5 6.4 – 0.2 2.8 ± 0.2 + 0.1 0.25 – 0.05 0.5 ± 0.1 1.2 ± 0.1 + 0.3 1.2 – 0.1 PACKAGE STRUCTURE PACKAGE MATERIAL EPOXY RESIN SONY CODE SIP-8P-02 LEAD TREATMENT SOLDER PLATING EIAJ CODE SIP008-P-0340 LEAD MATERIAL COPPER ALLOY PACKAGE MASS 0.7g JEDEC CODE CXA1511M 8PIN SOP (PLASTIC) + 0.4 1.25 – 0.15 + 0.4 5.0 – 0.1 8 0.10 5 6.4 ± 0.4 + 0.3 4.4 – 0.1 A 4 1 1.27 b 0.24 M + 0.15 0.1 – 0.1 0.5 ± 0.2 B DETAIL B : SOLDER b = 0.4 ± 0.03 + 0.03 0.15 – 0.01 (0.4) (0.15) + 0.1 0.15 – 0.05 0° to 10° + 0.1 b = 0.4 – 0.05 DETAILA DETAIL B : PALLADIUM PACKAGE STRUCTURE PACKAGE MATERIAL EPOXY RESIN SONY CODE SOP-8P-L03 LEAD TREATMENT SOLDER/PALLADIUM PLATING EIAJ CODE SOP008-P-0225 LEAD MATERIAL 42/COPPER ALLOY PACKAGE MASS 0.1g JEDEC CODE NOTE : PALLADIUM PLATING This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame). –7–