t2526 ATMEL Corporation, t2526 Datasheet

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t2526

Manufacturer Part Number
t2526
Description
Low-voltage Ir Receiver Assp T2526
Manufacturer
ATMEL Corporation
Datasheet
Features
Applications
1. Description
The IC T2526 is a complete IR receiver for data communication developed and opti-
mized for use in carrier-frequency-modulated transmission applications. The IC offers
highest sensitivity as well as highest suppression of noise from daylight and lamps.
The T2526 is available with broadest range of frequencies (30, 33, 36, 37, 38, 40, 44,
56, 76 kHz) and 5 different noise suppression regulation types (standard, lamp, noise,
short burst, data rate) covering requirements of high-end remote control solutions
(please refer to selection guide available for T2525/T2526). The T2526 operates in a
supply voltage range of 2.7V to 5.5V.
The function of the T2526 can be described using the block diagram of
page
voltage for the PIN diode. Secondly the pulsed photo-current signals are transformed
into a voltage by a special circuit which is optimized for low noise applications. After
amplification by a Controlled Gain Amplifier (CGA) the signals have to pass a tuned
integrated narrow bandpass filter with a center frequency f
chosen carrier frequency of the input signal The demodulator is used first to convert
the input burst signal to a digital envelope output pulse and to evaluate the signal
information quality, i.e., unwanted pulses will be suppressed at the output pin. All this
is done by means of an integrated dynamic feedback circuit which varies the gain as a
function of the present environmental conditions (ambient light, modulated lamps
etc.). Other special features are used to adapt to the current application to secure best
transmission quality.
No External Components Except PIN Diode
Supply-voltage Range: 2.7V to 5.5V
Highest Sensitivity Due to Automatic Sensitivity Adaption (AGC) and Automatic Strong
Signal Adaption (ATC)
Automatic Supply Voltage Adaptation
Highest Immunity against Disturbances from Daylight and Lamps
Available for Carrier Frequencies between 30 kHz to 76 kHz; adjusted by Zener-Diode
Fusing ±2.5%
TTL and CMOS Compatible
Home Entertainment Applications (Audio/Video)
Home Appliances
Remote Control Equipment
2. The input stage meets two main functions. First it provides a suitable bias
0
which is equivalent to the
Figure 1-1 on
Low-voltage
IR Receiver
ASSP
T2526
4597G–AUTO–10/06

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t2526 Summary of contents

Page 1

... The IC offers highest sensitivity as well as highest suppression of noise from daylight and lamps. The T2526 is available with broadest range of frequencies (30, 33, 36, 37, 38, 40, 44, 56, 76 kHz) and 5 different noise suppression regulation types (standard, lamp, noise, short burst, data rate) covering requirements of high-end remote control solutions (please refer to selection guide available for T2525/T2526) ...

Page 2

... Not connected 5 IN Input PIN-diode 6 GND Ground 7 NC Not connected 8 NC Not connected T2526 2 VS CGA and Input filter AGC/ATC Oscillator and digital control GND OUT 3 6 GND OUT Micro- Demodulator controller T2526 4597G–AUTO–10/06 ...

Page 3

... Junction ambient TSSOP8 4597G–AUTO–10/06 Symbol Value V –0 –0 0. –0 –25 to +85 amb T –40 to +125 stg P 30 tot Symbol Value R TBD thJA T2526 Unit °C °C mW Unit K/W 3 ...

Page 4

... Type means: A =100% tested 100% correlation tested Characterized on samples Design parameter Notes: 1. Depending on version, see “Ordering Information” 2. BER = bit error rate; e.g., BER = 5% means that with the input pin 19...21 pulses can appear at the pin OUT 3. After transformation of input current into voltage T2526 4 Pin 25° ...

Page 5

... VARMIN G 71 MAX f –2.5 f +2.5 03V_FUSE 0 f –5.5 f +3.5 03V 0 f –4.5 f +3.0 03V 0 B 3.8 Symbol Min. Typ. Max. V 4.5 5.0 5 0.9 1.2 1 30/ 250 – 0. OCL T2526 Unit Type kHz C Unit Type ...

Page 6

... BER = bit error rate; e.g., BER = 5% means that with the input pin 19...21 pulses can appear at the pin OUT 3. After transformation of input current into voltage 6.1 ESD All pins 6.2 Reliability Electrical qualification (1000h) in molded plastic package T2526 6 Pin = 0 5 Figure 7-10 on page 25° ...

Page 7

... Eemin IN_DC S 100 0.1 0 IN_DC I versus Eemin IN_DC S 100 0.1 0 IN_DC V versus IN_DC S 3.5 V 3.0 2.5 2.0 1.5 1 IN_DC 10 100 1000 (µA) 10 100 1000 (µ 100 1000 (µA) T2526 7 ...

Page 8

... Figure 7-4. Figure 7-5. Figure 7-6. T2526 8 V versus IN_DC S 3.5 3.0 2.5 2.0 1.5 1 IN_DC Data Transmission Rate 5000 4500 4000 3500 3000 2500 2000 1500 1000 500 Data Transmission Rate 5000 4500 4000 3500 3000 2500 2000 1500 1000 ...

Page 9

... Envelope 1 OUT Data word 17 ms 4597G–AUTO–10/06 Typical Bandpass Curve 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.92 0.94 0.96 /B; B => –3 dB values. Period (P = 16) Burst ( pulses µs t DOFF 17056 µs/data word Telegram pause REF Bandwidth (-3 dB) 0.98 1.00 1.02 1.04 1.06 f 533 µs Data word T2526 1.08 Envelope ...

Page 10

... PER RPU T2526 OUT GND IN_DC T2526 GND U2/40 k IN_DC DC (1) optional (1) R > 2 OCL Microcontroller (1) C 470 220 1 OUT + C 1 4.7 µF 4597G–AUTO–10/06 ...

Page 11

... Length inclusive scribe Width inclusive scribe Thickness Pads Fusing pads Material Thickness Material Thickness 1. Value depends on manufacture location. 1210, 1040 IN 783,887 T2526 Fusing width 1.16 mm 1.37 mm 290 µ ± µ 90 µ 70 µ 70 µ (1) AlCu/AlSiTi 0.8 µ /SiO 0.7/0.3 µm T2526 scribe 11 ...

Page 12

... Two pad layout versions (see 3. Integrated pull-up resistor at pin OUT (see electrical characteristics) 4. Typical data transmission rate up to bit/s with request: noise type, data rate type 9.1 Pad Layout Figure 9-1. Figure 9-2. T2526 12 (3) ( 2179 ...

Page 13

... Section 9 “Ordering Information” on page 11 changed Section 9 “Ordering Information” on page 11 changed Put datasheet in a new template Section 8 “Chip Dimensions” on page 10 changed Put datasheet in a new template First page: Pb-free logo added Page 11: Ordering Information changed Page 11, 13: SO8 deleted T2526 13 ...

Page 14

... Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. © 2006, Atmel Corporation. All rights reserved. Atmel trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Atmel Operations Memory ...

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