View DS3894_1234354.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Obsolescence Notice
This product is obsolete. This information is available for your convenience only. For more information on Zarlink's obsolete products and replacement product lists, please visit
http://products.zarlink.com/obsolete_products/
DS3894 - 2.0
ZN409CE
PRECISION SERVO INTEGRATED CIRCUIT
The ZN409CE is a precision monolithic integrated circuit designed particularly for pulse-width position servo mechanisms used in all types of control applications. The low number of components required with the ZN409CE, together with its low power consumption, make this integrated circuit ideal for use in model aircraft, boats and cars where space, weight and battery life are at a premium. The amplifier will operate over a wide range of repitition rates and pulse widths and is therefore suitable for the majority of systems. The ZN409CE can also be used in motor speed control circuits.
FEATURES
s s s s s s s s s s Low External Component Count Low Quiescent Current (7mA Typical at 4.8V) Excellent Voltage and Temperature Stability High Output Drive Capability Consistent and Repeatable Performance PrecisionInternal Voltage Stabilisation Time Shared Error Pulse Expansion Balanced Deadband Control Schmitt Trigger Input Shaping Reversing Relay Output (DC Motor Speed Control)
Fig.1 Pin connections - top view
ABSOLUTE MAXIMUM RATINGS
Supply voltage Package dissipation Operating Temperature range Storage temperature range 6.5V 300mW -20C to +65C -65C to +150C
Fig.2 Block diagram for ZN409CE
ZN409CE
ELECTRICAL CHARACTERISTICS
Test conditions (unless otherwise stated): Tamb = 25C, VS = 5V Value Min. Input threshold (lower) Input threshold (upper) Ratio upper/lower threshold Input resistance Input current Regulator voltage Regulator supply rejection ratio 1.15 1.4 1.1 20 350 2.1 200 Typ. 1.25 1.5 1.2 27 500 2.2 300 Max. 1.35 1.6 1.3 35 650 2.3 k A V -10C to +65C, 1.3mA load current VS = 3.5V to 6.5V dVIN RSRR = Monostable Linearity Monostable period temperature coefficient Output Schmitt deadband Minimum output pulse Error pulse for full drive Total deadband PNP drive Output saturation voltage Direction bistable output Supply voltage range Supply current Total external current from regulator Peak voltage VC EXT (with respect to 2V regulated voltage) 1 2.5 70 3.5 40 35 2 3.5 4.6 1.3 1.5 3.5 100 5 55 50 300 2.8 5 6.7 0.7 0.5 3 4.5 130 6.5 70 65 400 3.6 6.5 10 s ms s s mA mA mV mA V mA mA V V Quiescent VS = 3.5V T = 25C T = -10C 3.5 +0.01 4.0 % %/C dVOUT 45, Rp = 1.5k, R1 = 12k Excluding RT, CT. Rp = 1.5k, R1 = 12k (potentiometer slider set mid-way) CE = 0.47F CE = 0.47F, RE = 180k 15ms repetition rate CE = 0.47F, RE = 180k CD = 1000pF T = 25C T = 10C IL = 400mA
Characteristics
Units V V Pin 14 Pin 14
Test conditions
-10C to +65C
CIRCUIT DESCRIPTION
The ZN409CE incorporates a precision dual voltage source providing 1.5V for internal use and 2.2V for external circuit requirements. The input circuit is a Schmitt trigger allowing servo operation independent of edge speed, as obtained from the receiver-decoder. Output from the Schmitt trigger is fed to the deadband and monostable circuits. The deadband circuit prvides a prgrammable area of insensitivity to input pulse in order to eliminate hunting and overshoot. Dynamic feedback can be used to reduce the width of the deadband to acceptable levels, and to maintain correct servo operation. The monostable circuits provide the inputs to the pulse comparison circuit which determines direction and amount of drive required to reach the new position. The output drive is also controlled by the pulse expansion circuit. This circuit ensures that a stationary motor will start rotating without drawing full stall current. This gives much improved battery life.
2
ZN409CE
3
ZN409CE
HEADQUARTERS OPERATIONS GEC PLESSEY SEMICONDUCTORS Cheney Manor, Swindon, Wiltshire SN2 2QW, United Kingdom. Tel: (0793) 518000 Fax: (0793) 518411 GEC PLESSEY SEMICONDUCTORS P.O. Box 660017 1500 Green Hills Road, Scotts Valley, California 95067-0017, United States of America. Tel: (408) 438 2900 Fax: (408) 438 5576
CUSTOMER SERVICE CENTRES * FRANCE & BENELUX Les Ulis Cedex Tel: (1) 64 46 23 45 Fax : (1) 64 46 06 07 * GERMANY Munich Tel: (089) 3609 06-0 Fax : (089) 3609 06-55 * ITALY Milan Tel: (02) 66040867 Fax: (02) 66040993 * JAPAN Tokyo Tel: (03) 5276-5501 Fax: (03) 5276-5510 * NORTH AMERICA Integrated Circuits and Microwave Products Scotts Valley, USA Tel (408) 438 2900 Fax: (408) 438 7023. Hybrid Products, Farmingdale, USA Tel (516) 293 8686 Fax: (516) 293 0061. * SOUTH EAST ASIA Singapore Tel: (65) 3827708 Fax: (65) 3828872 * SWEDEN Stockholm, Tel: 46 8 702 97 70 Fax: 46 8 640 47 36 * UK, EIRE, DENMARK, FINLAND & NORWAY Swindon Tel: (0793) 518510 Fax : (0793) 518582 These are supported by Agents and Distributors in major countries world-wide.
(c) GEC Plessey Semiconductors 1993 Publication No. DS3894 Issue No. 2.0 Octobner 1993
This publication is issued to provide information only which (unless agreed by the Company in writing) may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. No warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. The Company reserves the right to alter without prior knowledge the specification, design or price of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a specific piece of equipment. It is the user's responsibility to fully determine the performance and suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not been superseded. These products are not suitable for use in any medical products whose failure to perform may result in significant injury or death to the user. All products and materials are sold and services provided subject to the Company's conditions of sale, which are available on request.
4

▲Up To Search▲

Price & Availability of DS3894

	To Download DS3894 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .