t4227-fbg3 ATMEL Corporation, t4227-fbg3 Datasheet

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t4227-fbg3

Manufacturer Part Number
t4227-fbg3
Description
Time-code Receiver
Manufacturer
ATMEL Corporation
Datasheet
Time-Code Receiver
Description
The T4227 is a bipolar integrated straight-through receiver circuit in the frequency range of 40 kHz to 120 kHz.
The device is designed for radio-controlled clock applications with very high sensitivity.
Features
D Low power consumption
D Very high sensitivity
D High selectivity by using crystal filter
D Power-down mode available
D Only a few external components necessary
Block Diagram
Rev. A2, 24-Jul-00
Ordering Information
T4227-DDT
T4227-FB
T4227-FBG3
T4227-DBQ
Extended Type Number
Preliminary Information
Figure 1. Block diagram
Package
SSO16
SSO16
No
No
D Complementary output stages
D AGC hold mode
D Wide frequency range (40 kHz to 120 kHz)
D Low battery voltage applications (1.1 V to 3.6 V)
Die in trace
Taped and reeled
CSP Chip Scale Package
Remarks
T4227
1 (13)

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t4227-fbg3 Summary of contents

Page 1

... D Power-down mode available D Only a few external components necessary Block Diagram Ordering Information Extended Type Number T4227-DDT T4227-FB T4227-FBG3 T4227-DBQ Rev. A2, 24-Jul-00 D Complementary output stages D AGC hold mode D Wide frequency range (40 kHz to 120 kHz) D Low battery voltage applications (1 3.6 V) Figure 1. Block diagram ...

Page 2

... Ambient temperature range Storage temperature range Junction temperature Electrostatic handling ( MIL Standard 883 D HBM ) PAD Coordinates The T4227 is available as die for “chip-on-board” mounting and in SSO16 package. DIE size: 1.65 x 1.44 mm 100 x 100 µm (contact window µm) PAD size: 300 µm ± 10 µm ...

Page 3

... HLD AGC hold mode: HLD high (V function, SL low (V AGC voltage. This can be used to prevent the AGC from peak voltages, created by e.g. a stepper motor. Preliminary Information T4227 Figure 6. Figure sets normal HDL holds for a short time the ...

Page 4

... T4227 Figure 8. PK Peak detector output: An external capacitor has to be con- nected to ensure the function of the peak detector. The value of the capacitance influences the AGC regulation time. Figure 9. VCC, GND VCC and GND are the supply voltage inputs. To power down the circuitry it is recommended to use the PDN input and not to switch the power supply ...

Page 5

... This twisted line is also necessary to reduce feedback of noise from the microprocessor to the IC input. Long connection lines must be shielded. A final adjustment of the time-code receiver can be carried out by pushing the coil along the bar antenna. Preliminary Information T4227 as close as possible to the res 5 (13) ...

Page 6

... T4227 Electrical Characteristics = 3 V, reference point Pin 3, input signal frequency 77.5 kHz ± 5 Hz; carrier voltage 100% reduction to 25 for t = 200ms 25_C, unless otherwise specified. MOD amb Parameter Supply voltage range Supply current Set-up time after Reception frequency range Minimum input voltage Maximum input voltage Input amplifier max ...

Page 7

... AGC BIAS VCC GND 3 Volt Figure 13. Test circuit 77503 Hz RFI RFO AGC BIAS PON VCC GND PON 3 Volt Figure 14. Test circuit Preliminary Information T4227 Vcc 2.2nF DEM 100k OUT1 OUT2 PEAK DET. HLD PK OFF AGC HOLD ON 2.2 µF Vcc 2.2nF DEM OUT1 ...

Page 8

... T4227 Information on the German Transmitter (Customer is responsible to verify the information!) Station: DCF 77, Frequency 77.5 kHz, Transmitting power coding when required Example:19. seconds Start Bit Modulation The carrier amplitude is reduced to 25% at the beginning of each second for a period of 100 ms (binary zero) or 200 ms (binary one), except the 59th second ...

Page 9

... The prescence of the fast code during the first 500 ms at the beginning of the minute in not guaranteed. The trans- mission rate is 100 bits/s and the code contains information of hour, minute, day and month. Preliminary Information T4227 Time frame ...

Page 10

... T4227 Information on the US Transmitter (Customer is responsible to verify the information!) Station: WWVB Frequency 60 kHz Transmitting power minutes hours Example: UTC 18. seconds minutes Frame-reference marker Modulation The carrier amplitude is reduced the beginning of each second and is restored within 500 ms (binary one) or within 200 ms (binary zero) ...

Page 11

... Figure 18. Time-Code Format The time-code format consists of 1-minute time frames. A time frame contains BCD-coded information of minutes, hours, days, weeks and year. In addition, there are 6 position-identifier markers (P0 thru P5) with reduced carrier amplitude of 500 ms duration. Preliminary Information T4227 Time frame weeks ...

Page 12

... T4227 Package Information Package SSO16 Dimensions (13) 5.00 max 6.2 5.00 5.8 4.80 1.40 3.95 max 0.25 0.635 0.10 5.2 4.45 4.8 9 technical drawings according to DIN specifications 8 Preliminary Information 0.2 Rev. A2, 24-Jul-00 ...

Page 13

... Data sheets can also be retrieved from the Internet: TEMIC Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 (0)7131 67 2594, Fax number: 49 (0)7131 67 2423 Rev. A2, 24-Jul-00 such unintended or unauthorized use. Preliminary Information T4227 http://www.temic–semi.com 13 (13) ...

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