Description The ERM-TU38 are miniaturized infrared receivers for infrared remote control systems. PIN diode and preamplifier are assembled on lead frame. The type of epoxy package can filter the visual interference. The demodulated output signal can directly be decoded by a microprocessor. Features Photo detector and preamplifier in one package Internal filter for PCM frequency High immunity against ambient light Improved shielding against electric field disturbance 3.0 Volt supply voltage ; low power consumption TTL and CMOS compatibility Applications AV instruments (Audio, TV, VCR, CD player) Home appliances (Air-conditioner, Fan, Light) Remote control for wireless devices ERM-TU38 Absolute Maximum Ratings (T a =25 ) Dimension in mm Supply Voltage 0.3 ~ 6.0Volt Junction Temperature 100 Operating Temperature -25 ~ +85 Storage Temperature -25 ~ +85 (t<10s, 1mm from case) Soldering Temperature 260 Optoelectric Characteristics (T a =25, V S =5V) Parameter Symbol Min. Typ. Max. Unit Supply Voltage V CC 2.7 3.0 5.5 V Current Consumption Icc 1.1 2.5 ma Peak Sensitivity Wavelength P 940 nm Output form Active low output High Level Output Voltage V OH 2.8 3.0 V Low Level Output Voltage V OL 0.2 0.4 V High Level Output Pulse Width T wh 500 800 µs Low Level Output Pulse Width T wl 500 800 µs Receiving Distance L 1 10 m Controlled Angle 45 deg Tel: (852) 2723-3122 Fax: (852) 2723-3990 Email: info@elite-ent.com.hk Page : 1 / 5
Typical Electrical / Optical Characteristics curves (25 Ambient Temperature Unless Otherwise Noted) ERM-TU38 Tel: (852) 2723-3122 Fax: (852) 2723-3990 Email: info@elite-ent.com.hk Page : 2 / 5
Note 1.Distance between emitter & detector specifies maximum distance that output form satisfies the standard (3-2) Under the conditions below the standard transmitter (1) Measuring place Indoor without extreme reflector of light (2) Ambient light source Detecting surface lamination shall be 200 ± 50Lux under ordinary white fluorescence lamp or high frequency lightning (3) Standard transmitter Burst wave indicated in drawing Fig.1 of Standard transmitter shall be to 50mVp-p under the measuring circuit specified in Fig.2. Block Diagram Functional Block Diagram VCC IN I-V Converter & Input Bias Control Pre Noise Det. & Gain Ctrl AGC Limit Band-pass filter Comparator Voltage Reference Circuit Integrator & Wave Shaping Output Stage OUT Fast Bias Circuit Frequency Setting Frequency Trimming Threshold Control Circuit Freq. Selection Option Pads (S1-S4) Trimming Pads (T1-T5) GND Text Method A. Standard Transmitter Tel: (852) 2723-3122 Fax: (852) 2723-3990 Email: info@elite-ent.com.hk Page : 3 / 5
B. Detection Length Test C. Pulse Width Test Tel: (852) 2723-3122 Fax: (852) 2723-3990 Email: info@elite-ent.com.hk Page : 4 / 5
Recommended application circuit : Reliability TEST ITEM TEST CONDITION STANDARD High Temperature T a =+80 t=240h Note 2. High Temp. & High Hum. T a =+40 90%RH t=240h Note 2. Low Temperature T a =-25 t=240h Note 2. Heat Cycle -25 (0.5H) +80 (0.5H) 20Cycle Note 2. Dropping Test devices shall be dropper 3 times naturally onto hard wooden board from a 75cm position Note 3. Note 2. 3-2 Note 3. 3-2 (electro-optical characteristics) shall be satisfied after leaving 2 hours in the normal temperature. (electro-optical characteristics) shall be satisfied and no conditions deforms and destruction of appearance. (excepting deforms of terminals) Inspection standard 1. Among electrical characteristics total number shall be inspected on items blow a. Front distance between emitter & detector inspection standard b. Current consumption c. H level output voltage d. L level output voltage 2. Items except above mentioned are not inspected particularly, but shall fully satisfy Caution (When use and storage of this device) 1. Store and use where there is no force causing transformation or change in quality. 2. Store and use where there is no corrosive gas or sea (salt) breeze. 3. Store and use where there is no extreme humidity. 4. Solder the lead-pin within the condition of ratings. After solder do not add exteriors force. 5. Do not wash this device wipe the stains of diode side with a soft cloth you can use the solvent ethyl alcohol or isopropyl one only. 6. To prevent static electricity damage to the Pre-AMP, make sure that the human body, the soldering iron is connected to ground before using. 7. Put decoupling device between V cc and GND for reduce the noise from power supply line. 8. The performance of remote-control system depends on environments condition and ability of peripheral parts, Customer should evaluate the performance as total system in those conditions after system up with components such as commander, micon and this receiver module. Others 1. This devices is not design to endure radioactive rays and heavily charged particles. 2. In case where any trouble questions arise, both parties agree to make full discussion covering the said problem. Tel: (852) 2723-3122 Fax: (852) 2723-3990 Email: info@elite-ent.com.hk Page : 5 / 5