AK2127 GSG | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 6

Technical content

GSG 勁力半導体 Gunter Semiconductor GmbH AK2127 EDITION 09/00 Receiver/ Demodulator for time code signals transmitted by the transmitter DCF77( Germany) , MSF(UK), or WWVB(USA) For inquiry please contact : China Tel: 0086-755-3200442 Fax: 0086-755-3355520 Hong Kong Tel : 00852-26190748 Fax: 00852-24948080 e-mail sales@gsg-asia.com

Radio Controlled Clock Receiver Package 2. SOP 16 only for test purposes Technical Data TFA2127 Short Description The TFA2127 is a bipolar integrated straight through receiver circuit in the frequency range of 50...80 kHz. The integrated circuit is designed for radio controlled clock application with high sensitivity.

Features

  • Very high sensitivity < 1 µV
  • High selectivity by X-tal resonator
  • Start/stop-function available
  • Complementary output stages
  • Minimum external components Die dimensions - die measures: 1.8 mm x 2.1 mm - bond-pad measures: 100 µm x 100 µm - die height: 320 µm ± 15 µm - width of scribe line: 80 µm 18 19 12 TFA 2127 X 11 10 9 1. Die Pad-layout 56783412 910111213141516 9.9 – 0.1 0.421.27£ 0.7 0...8 0.19 –0.06 ‡ 0.3 3.9 – 0.1 6.0 – 0.2 0.25 M 0.15 1.35 – 0.10.15 £ 2.00 + 0.1 - 0.05 + 0.07 - 0.06 Edition 09/00

Pad-No. Pin-No. Symbol Function (SOP 16) 1 1 E3Q Amplifier 3 input 2 - A2 Amplifier 2, non inverting output 3 2 A1 Amplifier 2, inverting output 4 3 AP1 Bias control 5 4 AP2 Bias control 6 5 E1 RF input, antenna 76 V CC2 Supply voltage 2, internal band gap 8 7 PON Stand-by and Start / Stop-switch

98 V CC1 Supply voltage 1

10 9 OPD Output time code, pull-down 11 10 OPU Output time code, pull-up 12 11 GND1 Ground (digital) 13 - KS Comparator threshold 14 12 SR Clamping control input 15 13 CR AGC time constant 16 14 CD Low pass filter 17 15 AP3 Capacitor for bias stability 18 16 GND3 Ground (analog) 19 16 GND2 Ground (analog) Block Diagram and Test Circuit V1 DV1 V2 CONTROL AMPLIFIER COMPARATOR POWER SUPPLY V3- UE1: pot core AL1100 nH/w2 ; 2 x 25 windings with 0.2 CuL UE1 AP2 AP1 A2 E3Q AP3 CD CR SR OPU OPD KSGND1GND2GND3PONVCC1 VCC2 9 8 18 19 12 13 15161712345 V1V2 V3 V1, V2 VCC1 100k 100k VCC3 GND1GND1GND1 47nF 22nF 4.7mF 6.8nF GND1 4.7mF TFA 2127 200k 2 09/00 TFA2127

Parameter Symbol min. max. Unit Supply voltage 1 V CC1 0 5.25 V Supply voltage 2 V CC2 0 5.25 V Output voltage OPD V OPD -0.3 V CC1 V Output voltage OPU V OPU -0.3 5.25 V Input voltage SR V SR 0V CC1 V Input voltage PON V PON 0V CC1 V Junction temperature T j 150 °C Ambient temperature range T amb -25 +70 °C Recommended Operational Conditions Parameter Symbol min. max. Unit Supply voltage 1 V CC1 2.2 3.5 V Supply voltage 2 V CC2 1.2 1.8 V RF input voltage V iE1 1 50000 µV Reception frequency f 50 80 KHz TFA2127

Electrical Characteristics

Refering to the test circuit with generator signal f = 77500 ± 5 Hz pulse modulation of RF-signal from 100 % to 25 % during modulation time t = 200 ms, V CC1 = VCC2 = 1.4 V; VPON = 0 V; Ta = 25 °C, unless specified otherwise Parameter Symbol min. typ. max. Unit Supply voltage 1 V CC1 2.2 3.5 5.25 V Supply voltage 2 V CC2 1.2 1.4 1.8 V Supply current (VCC1 = 3.5 V) I CC11 400 540 690 µA (VCC1 = 2.2 V) I CC12 400 530 690 µA Supply current I CC2 300 500 640 µA Supply current stand-by I CC10 0.03 1 µA (VPON = VCC1) Input current stand-by switch -I PON 14 20 µA Input current on SR -I SR 0.3 2 µA Output pulse duration (OPU) 1) tOL 180 190 220 ms ViE1 = 3 µV, 10 mV Output LOW-current (OPU) I OL 100 200 µA ViE1 = 30 µV Output LOW-voltage (OPU) V OL 45 200 mV ViE1 = 30 µV; IOL = 15 µA Output HIGH-current (OPD) -I OH 100 330 µA ViE1 = 30 µV Output HIGH-voltage (OPD) V OH 1.1 1.3 V ViE1 = 30 µV; -IOH =15 µA Sensitivity V iE1 0.8 1 µV (min. RF input for tOL ‡ 180 ms)1) 1) Test in a special application circuit without socket. 4 09/00 TFA2127

Application Information

The PCB has to be designed for RF conditions. To achieve a high selectivity the parasitic parallel capacitance of For a trouble-free reception the capacitors on V CC2 and AP3 have to be arranged nearby the chip food prints. The dimensioning of the antenna resonant resistance is a compromise between high signal voltage and low antenna noise voltage. Q factor of antenna should be high for attenuation of interference signals. In the application circuit is R res < 100 k; Q = 80. 77.5 kHz 10111213141516 87654321 6.8n 100n FERRITE ANTENNA STAND BY * 4.7m VS = 1.5 V 100k 100k 4.7m22n47n TFA 2127 OPU OPD Switch on ground: Start, Power on Switch open or on VCC: Stop, Stand-by Copying is generally permitted, indicating the source. However, our consent must be obtained in all cases. MEGAXESS reserves the right to make changes in specifications at any time and without notice. The information and suggestions are given without obligation and cannot give rise to any liability, they do not indicate the availability of the components mentioned. The information included herein is believed to be accurate and reliable. However, MEGAXESS assumes no responsibility for its use; nor for any infringements of patents or of other rights of third parties which may result from its use. Megaxess GmbH Deutschland • POB 1370 • 15236 Frankfurt(Oder) • Germany Phone +49 335 2005 • FAX +49 335 3251 • Internet http://www. megaxess.de TFA2127