ATA2536T Low-voltage IR Receiver ASSP DATASHEET Features ● Highly integrated device with no external components except PIN diode ● Supply-voltage range: 2.7V to 5.5V ● High sensitivity due to automatic sensitivity adaptation (AGC) and automatic strong signal adaptation (ATC) ● Automatic supply voltage adaptation ● High immunity against disturbances from daylight and lamps ● Small size and innovative pad layout ● Available for carrier frequencies between 36kHz to 40kHz ● TTL and CMOS compatible Applications ● Home entertainment applications ● Home appliances ● Remote control equipment

Description The Atmel® IC ATA2536T is a complete IR receiver for data communication developed and optimized for use in carrierfrequency-modulated transmission applications. The IC combines small size with high sensitivity as well as high suppression of noise from daylight and lamps. An innovative and patented pad layout offers unique flexibility for assembly of IR receiver modules. The Atmel ATA2536T is recommended in LCD TV application (noise environment by backlight interference) with IR protocols using 375µs maximum burst length of data bits, available with standard frequencies (36, 37, 38,...

Absolute Maximum Ratings Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Parameter Supply voltage Supply current Input voltage Output voltage Output current Operating temperature Storage temperature Power dissipation at Tamb = 25°C

Electrical Characteristics, 3-V Operation Tamb = –25°C to +85°C, VS = 2.7V to 3.3V unless otherwise specified. No. 1 Test Conditions Supply-voltage range Supply current Internal pull-up resistor Output voltage high Output current clamping Minimum detection threshold current Minimum detection threshold current with AC current disturbance IIN_AC100 = 3 µA at 100 Hz Maximum detection threshold current with VIN > 0V Test signal: VS = 3V Tamb= 25°C, IIN_DC=1µA square pp burst N = 16 f = f0; tPER = 10ms BER = 50(1) Test signal: VS = 3V, Tamb = 25°C IIN_DC = 1µA square pp burst N = 16 f = f0; tPER =...

Electrical Characteristics, 5-V Operation Tamb = –25°C to +85°C, VS = 4.5V to 5.5V unless otherwise specified. No. 5 Test Conditions Supply current Internal pull-up resistor Output voltage high Output current clamping Supply-voltage range Input DC-current Min. detection threshold current Min. detection threshold current with AC current disturbance IIN_AC100 = 3µA at 100Hz Max. detection threshold current with VIN > 0V Test signal: VS = 5V Tamb = 25°C IIN_DC = 1µA square pp burst N = 16 f = f0; tPER = 10ms BER = 50(1) Test signal: VS = 5V, Tamb = 25°C IIN_DC = 1µA square pp burst N = 16 f = f0;...

Typical Electrical Curves at Tamb = 25°C Figure 5-1. IEemin versus IIN_DC, VS = 3V 100 Figure 5-2. IEemin versus IIN_DC, VS = 5V 100 Figure 5-3. VIN versus IIN_DC, VS = 3V 4.0 3.5 3.0 VS = 3V f = fo

Figure 5-4. VIN versus IIN_DC, VS = 5V 4.0 3.5 VS = 5V f = fo Figure 5-5. Data Transmission Rate, VS = 3V 4000 3500 Short burst type Standard type Figure 5-6. Data Transmission Rate, VS = 5V 4000 3500 Short burst type Lamp type

Figure 5-7. Typical Bandpass Curve Standard and Lamp Type 1.2 VS = 3.3V Relative Amplitude Q = (f/fo) /B; B -> –3dB values Example: Q = 1/(1.06 – 0.94) = 8.3 Figure 5-8. Typical Bandpass Curve Short Burst Type 1.2 VS = 3.3V Relative Amplitude

Figure 5-9. Illustration of Used Terms, Example: f = 38kHz, burst with 16 pulses, 16 periods Period (P = 16) tPER = 842µs Burst (N = 16 pulses) tGAP > tDON + tDOFF OUT Telegram Pause Data Word Data Word Figure 5-10. Test Circuit IEe = ΔU1/400kΩ ΔU1 1nF

Figure 5-11. Application Circuit VDD = 3V to 5V The value of C2 is dimensioned for the short burst type ATA2536T7xx. For the other types C 2 can be omitted. In case of an optional resistor R 2 > 2.4kΩ the value of C 2 must be increased to C 2 = 10nF. For the other types C 2 = 470pF is sufficient.

Delivery: unsawn wafers (DDW) in box 3415 Short burst type: > 6 pulses, highest data rate Notes: 1. xx means carrier frequency value (36, 37, 38 or 40kHz typical), frequency value 33kHz and 56kHz on request 2. Maximum data transmission rate up to bits/s with f0 = 56kHz, Vs = 5V Zapping Versioning Note: The pad coordinates are given for the centre of the pad, values in Mm from the origin (0;0) Dimensions Length inclusive scribe 0.75mm Width inclusive scribe 0.84mm Fusing pads 60um diameter Pad metallurgy Material AlSiCu

Data output Supply voltage Type adjust

Revision History Please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. Revision No. • Put datasheet in the latest template • Figure 5-11 “Application Circuit” on page 11 updated

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