OKI Semiconductor ML6190B FEDL6190B-01 Issue Date: Mar. 3, 2005 Longwave Time Code RF Receiver LSI GENERAL DESCRIPTION The ML6190B receives and detects standard low-frequency radio waves and outputs time codes indicating time and calendar information as digital signals. Using the time codes allows clocks built in various devices to be corrected automatically. The ML6190B is provided with a built-in antenna switch to allow reception of two radio frequencies. A CMOS amplifier circuit, which has extremely high impedance input, can capture antenna output signal voltage effectively, so it can have higher radio wave sensitivity than a bipolar amplifier ciucuit. Features • • • • • High sensitivity (1.0 µVrms typ.) Low supply current (17 µA typ.) Low standby current (0.01 µA max.) Low voltage drive (VDD = 1.1 V to 3.6 V) Built-in antenna switch (frequency switching) Functions • RF amplifier • AGC circuit • Rectifier • Slicer • Time code output • Antenna switch Package 20-pin SSOP (SSOP20-P-44-0.65-K) (ML6190BMB) 1/11 FSEL CSW IN2 IN1 Antenna Input SW AMP with AGC AGCAMP OUTP (*) Use a capacitor equal to the capacitance between the crystal pins. AGC HOLD AGCAMP OUTN AGC + VREG + VREG GND Slicer 0.022µF +80%/-20% Rectifier AMP AMP INP DET 10µF +80%/-20% AGC BIAS AMP INN 2pF (note) VDD Level Shifter REG & BIAS PON 4.7µF +80%/-20% TCO Output FEDL6190B-01 OKI Semiconductor ML6190B BLOCK DIAGRAM 2/11 FEDL6190B-01 OKI Semiconductor ML6190B PIN SPECIFICATIONS • Package 20-pin SSOP (0.65 mm pitch) • Pin configuration Pin Symbol Function Pin Symbol 1 VREG 11 AMPINP AMP input pin 2 VDD 12 AMPINN AMP input pin 3 GND 13 AGCAMPOUTN AGCAMP output pin 4 FSEL 14 AGCAMPOUTP AGCAMP output pin 5 PON Regulator output pin External power supply pin Ground pin Antenna switch control pin Power-on input pin 15 GND Ground pin 6 TCO Time code output pin 16 VREG Regulator output pin 7 AGC_HOLD AGC hold input pin 17 GND Ground pin AGC pin for external capacitor DET pin for external capacitor Ground pin 18 CSW Antenna input pin 19 IN2 Antenna input pin 20 IN1 Antenna input pin 8 AGC 9 DET 10 GND Function 3/11 FEDL6190B-01 OKI Semiconductor ML6190B • Pin descriptions Pin Symbol I/O 1 VREG — 2 3 4 VDD GND FSEL — — I 5 PON O 6 TCO I 7 AGC_HOLD — 8 AGC — 9 DET 10 11 GND AMPINP — I 12 AMPINN I 13 14 15 AGCAMPOUTN AGCAMPOUTP GND O O — 16 VREG — 17 18 19 20 GND CSW IN2 IN1 — I I I Description Regulator output pin Connect a 4.7 µF capacitor between this pin and the GND pin. Either polar or non-polar capacitors can be used. When using polar capacitors, connect them as shown in the block diagram. This pin is connected to pin 16 internally but should also be connected externally. External power supply pin Ground pin Antenna switch control pin Power-on input pin “H”: Normal operation “L”: Standby operation Time code output pin The “H” output for the large amplitude signal, the “L” output for the small amplitude signal, and “H” output in the standby state. AGC hold input pin “H”: AGC operation “L”: AGC hold operation AGC pin for an external capacitor Connect a 10 µF capacitor between this pin and the GND pin. Either polar or non-polar capacitors can be used. When using polar capacitors, connect them as shown in the block diagram. DET pin for an external capacitor Connect a 0.022µF capacitor between this pin and the GND pin. Ground pin AMP input pin AMP input pin Leave this pin open. Output pin for AMP with AGC Output pin for AMP with AGC Ground pin Regulator output pin This pin is connected to pin 1 internally but should also be connected externally. Ground pin Antenna input pin Antenna input pin Antenna input pin 4/11 FEDL6190B-01 OKI Semiconductor ML6190B RADIO WAVE RECEIVING IC SPECIFICATIONS Absolute Maximum Ratings Parameter Maximum supply voltage Symbol Condition VDD Ta = 25°C Rating Unit –0.3 to +3.8 V Input voltage VIN –0.3 to VDD+0.3 V Operating temperature* Top — –40 to +85 °C Storage temperature TSTG — –55 to +125 °C *: The temperature that does not cause permanent damage to the device (Performance may not be guaranteed) Recommended Operating Conditions Parameter Operating voltage Symbol Condition Rating Unit VDD — 1.1 to 3.6 V TOP — –25 to +85 °C Operating temperature Electrical Characteristics VDD = 1.5 V, GND = 0 V, Ta = 25 °C, fIN = 60 kHz, and modulation factor = 90 %, unless otherwise specified. • DC characteristics Parameter Supply current Standby current Symbol IDD ISTB Condition — — Min. Typ. Max. Unit — — 17 — 38 0.01 µA µA Symbol VINmin VINmax Condition — — Between IN1 and IN2 pins Between AMPINP and AMPINN pins — — Min. Typ. Max. Unit — 100 2 1.0 — — — — — µVrms mVrms MΩ — 40 — — 5 100 pF kHz Condition — — VDD = 3.6 V VO = 0 V Min. Typ. Max. Unit VDD−0.1 — — — — 0.1 V V — −36 — µA • AC characteristics Parameter Voltage sensitivity Maximum signal input Input resistance Rin Input capacitance Receiving frequency Cin fIN 500 kΩ • TCO output characteristics Parameter Output voltage (high) Output voltage (low) Output short current (high) Output short current (low) Output pulse width (500 ms input) Output pulse width (800 ms input) Output pulse width (200 ms input) Symbol VOH VOL IOH IOL VDD = 3.6 V VO = 3.6 V — 36 — µA T500 — 400 500 600 ms T800 — 700 800 900 ms T200 — 100 200 300 ms 5/11 FEDL6190B-01 OKI Semiconductor ML6190B • AGC hold characteristics Parameter AGC_HOLD “H” input voltage AGC_HOLD “L” input voltage AGC_HOLD “H” input current AGC_HOLD “L” input current Symbol Condition Min. Typ. Max. Unit VIHAH During normal operation 0.9*VDD — — V VILAH During AGC hold — — 0.1*VDD V |IIHAH| VI = VDD — 0.01 — µA |IILAH| VI = 0.0V — 0.01 — µA Symbol VIHPON VILPON |IIHPON| |IILPON| Condition During normal operation During standby mode VI = VDD VI = 0.0V Min. Typ. Max. Unit 0.9*VDD — — — — — 0.01 0.01 — 0.1*VDD — — V V µA µA Symbol VIHFSEL VILFSEL |IIHFSEL| |IILFSEL| Condition Antenna switch ON Antenna switch OFF VI = VDD VI = 0.0V Min. Typ. Max. Unit 0.9*VDD — — — — — 0.01 0.01 — 0.1*VDD — — V V µA µA • PON characteristics Parameter PON “H” input voltage PON “L” input voltage PON “H” input current PON “L” input current • FSEL characteristics Parameter FSEL “H” input voltage FSEL “L” input voltage FSEL “H” input current FSEL “L” input current Switching ON resistance Switching OFF resistance RSWH HSEL = "H" 350 — — kΩ RSWL FSEL = "L" — 20 100 Ω Parameter AGC setup time Symbol TAGC Min. Typ. Max. Unit — 3 — sec Response delay TTCO Condition At the time of PON Phase delay relative to input signal — 50 — ms • Delay characteristics 6/11 FEDL6190B-01 OKI Semiconductor ML6190B DESCRIPTION OF EACH BLOCK (1) AMP Block Radio waves received by the antenna will be amplified by AMP with AGC. Signals output from AMP with AGC will go through an external quartz resonator, which serves as a band-pass filter, and will be amplified again at AMP. AMP with AGC AMP Crystal (2) AGC Block Output signals from AMP will be input to the AGC block and the rectifier block. After signals are input to the AGC block, their high side peak amplitudes are detected. As AGC signals, they will be fed back to AMP with AGC. The AGC block has the AGC hold function. When the AGC hold signal is "H," the block performs the regular AGC operation. The AGC block performs the AGC hold operation when the AGC hold signal is "L." AGC signal (To AMP with AGC) AGC (3) Rectifier Block After signals are input to the rectifier block, their high side peak amplitudes are detected. As DET signals, they will be transferred to the slicer block. DET signal (to slicer block) Rectifier 7/11 FEDL6190B-01 OKI Semiconductor ML6190B (4) Slicer Block Signals output from the rectifier block are input to the slicer block and will be shaped to VDD as “1” and GND as “0”. Then, these outputs will be output as time codes (TCO). This LSI has the standby function. When the PON signal is "H," the LSI will perform the regular operation. When the PON signal is "L," the LSI will be in standby state. The TCO during the standby state is "H." VDD (5) Time Code Output The time code output (TCO) of the ML6190B is in phase with actual time codes input from the antenna. A “H” level is output for the large amplitude signal and a “L” level is output for the small amplitude signal. Time Code Output (TCO) Antenna Input Signal (6) Connecting the Antenna The ML6190B has a built-in antenna switch to allow reception of two receive frequencies. When receiving only one frequency, connect both the antenna and C1 across IN1 and IN2. When receiving two frequencies, add C2 across CSW and IN1 to enable frequency switching. C1 FSEL C2 CSW IN2 IN1 40 kHz/60 kHz Antenna Connection Example 8/11 FEDL6190B-01 OKI Semiconductor ML6190B PACKAGE DIMENSIONS (Unit: mm) SSOP20-P-44-0.65-K Mirror Finish 5 Package material Lead frame material Pin treatment Package weight (g) Rev. No./Last Revised Epoxy resin 42 alloy Solder plating (≥5µm) 0.088 TYP. 1/Jan. 22, 1999 Notes for Mounting the Surface Mount Type Package The surface mount type packages are very susceptible to heat in reflow mounting and humidity absorbed in storage. Therefore, before you perform reflow mounting, contact Oki’s responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times). 9/11 FEDL6190B-01 OKI Semiconductor ML6190B REVISION HISTORY Document No. Date Page Previous Current Edition Edition Description PEDL6190B-01 Jan. 7, 2005 – – Preliminary edition 1 FEDL6190B-01 Mar. 3, 2005 – – Final edition 1 1 1 2 2 4 4 5, 6 5, 6 Modified contents in the "GENERAL DESCRIPTION" Section. Modified the block diagram and eliminated "Note". Partially added contents of the descriptions of Pins 1, 8, and 16. Partially changed contents in the "Electrical characteristics" Section. 10/11 FEDL6190B-01 OKI Semiconductor ML6190B NOTICE 1. The information contained herein can change without notice owing to product and/or technical improvements. Before using the product, please make sure that the information being referred to is up-to-date. 2. The outline of action and examples for application circuits described herein have been chosen as an explanation for the standard action and performance of the product. When planning to use the product, please ensure that the external conditions are reflected in the actual circuit, assembly, and program designs. 3. When designing your product, please use our product below the specified maximum ratings and within the specified operating ranges including, but not limited to, operating voltage, power dissipation, and operating temperature. 4. Oki assumes no responsibility or liability whatsoever for any failure or unusual or unexpected operation resulting from misuse, neglect, improper installation, repair, alteration or accident, improper handling, or unusual physical or electrical stress including, but not limited to, exposure to parameters beyond the specified maximum ratings or operation outside the specified operating range. 5. Neither indemnity against nor license of a third party’s industrial and intellectual property right, etc. is granted by us in connection with the use of the product and/or the information and drawings contained herein. No responsibility is assumed by us for any infringement of a third party’s right which may result from the use thereof. 6. The products listed in this document are intended for use in general electronics equipment for commercial applications (e.g., office automation, communication equipment, measurement equipment, consumer electronics, etc.). These products are not, unless specifically authorized by Oki, authorized for use in any system or application that requires special or enhanced quality and reliability characteristics nor in any system or application where the failure of such system or application may result in the loss or damage of property, or death or injury to humans. Such applications include, but are not limited to, traffic and automotive equipment, safety devices, aerospace equipment, nuclear power control, medical equipment, and life-support systems. 7. Certain products in this document may need government approval before they can be exported to particular countries. The purchaser assumes the responsibility of determining the legality of export of these products and will take appropriate and necessary steps at their own expense for these. 8. No part of the contents contained herein may be reprinted or reproduced without our prior permission. Copyright 2005 Oki Electric Industry Co., Ltd. 11/11