DISCRETE SEMICONDUCTORS DATA SHEET M3D315 UZZ7000T Trigger amplifier with two wire current interface Preliminary specification 2000 Sep 05 Philips Semiconductors Preliminary specification Trigger amplifier with two wire current interface FEATURES UZZ7000T PINNING • Differential input trigger amplifier PIN • Designed for signal conditioning of magnetoresistive sensor bridges • Two wire 7 and 14 mA current interface • Stabilized voltage supply source for external sensor bridges • Comparator with temperature controlled hysteresis • Wide temperature range • Max. 19 V supply. SYMBOL DESCRIPTION 1 SA positive differential input 2 n.c. not connected 3 n.c. not connected 4 VAC current output and supply 5 GND ground 6 n.c. not connected 7 VP bridge supply 8 SB negative differential input DESCRIPTION The UZZ7000T is a differential input amplifier circuit with a trigger mechanism for application with magnetoresistive sensor bridges. 5 8 handbook, halfpage It is equipped with a two wire current interface. The polarity of an input voltage difference triggers the circuit supply current between 7 and 14 mA. 1 The device also includes a voltage regulator for supply to an external sensor bridge. 4 Top view An on-chip temperature sensor adapts the comparator hysteresis to the temperature dependent sensitivity of typical magnetoresistive sensors, such as the Philips KMZ family types. MBK187 Fig.1 Simplified outline SOT96-1. QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Tamb = −40 to +60 °C 5.5 Tamb = −40 to +150 °C − − 15 V VVAC = 12 V; Vin > 0; note 1 − 7 − mA VVAC = 12 V; Vin < 0; note 1 − 14 − mA − 4.9 − V VVAC DC supply voltage IVAC(L) DC supply and output current IVAC(H) DC supply and output current VVP DC bridge supply voltage IVP bridge supply current capability VVP > 4.7 V − − −4.3 mA Tamb ambient operating temperature VCC = 12 V; note 2 −40 − +150 °C Notes 1. Vin = VSA − VSB. 2. Maximum power consumption according to power derating curve, see Fig.2. 2000 Sep 05 2 12 19 V Philips Semiconductors Preliminary specification Trigger amplifier with two wire current interface UZZ7000T LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 60134). SYMBOL PARAMETER CONDITIONS DC supply voltage VVAC MIN. MAX. UNIT not protected against incorrect polarity Tamb = −40 to +60 °C −0.5 +19 V Tamb = −40 to +150 °C − 15 V VSA maximum input voltage range t ≤ 5 s; Tamb = 26 ± 10 °C −0.5 7 V VSB maximum input voltage range t ≤ 5 s; Tamb = 26 ± 10 °C −0.5 7 V Ptot total power dissipation note 1 − 320 mW Tamb ambient operating temperature VCC = 12 V; note 1 −40 +150 °C Tstg storage temperature −40 +150 °C Note 1. Maximum power consumption according to power derating curve, see Fig.2. MGT542 handbook, halfpage Ptot (mW) Vhys (mV) 300 8 200 6 100 4 0 MGT543 10 400 handbook, halfpage 0 50 100 2 −40 150 200 Tamb (°C) Fig.2 Power derating curve. 2000 Sep 05 0 40 80 120 160 Tamb (°C) Fig.3 Hysteresis voltage as a function of temperature. 3 Philips Semiconductors Preliminary specification Trigger amplifier with two wire current interface UZZ7000T CHARACTERISTICS Tamb = 26 °C; VVAC = 12 V; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supply conditions Tamb ± 10 °C 5.6 7 8.4 mA DC supply current Tamb ± 10 °C 11.2 14 16.8 mA DC supply voltage Tamb = −40 to +150 °C 5.5 12 15 V IVAC(L) DC supply current IVAC(H) VVAC Signal input characteristics frm input frequency range 0 − 25000 Hz VSA maximum input voltage range −0.5 − 7 V operating input voltage range 2.4 − 2.6 V maximum input voltage range −0.5 − 7 V operating input voltage range 2.4 − 2.6 V VSB VOFF input offset voltage Tamb ± 10 °C −2.1 − 2.1 mV IBIAS input bias current VSA - VSB = 0 0.14 0.5 1.6 µA IOFF input offset current VSA - VSB = 0 −75 − 75 nA VHYS input hysteresis voltage at Tamb; notes 1 and 2 5.4 6 6.9 mV Bridge supply output characteristics VVP DC bridge supply voltage 4.7 4.9 5 V IVP DC bridge supply current − − −4.3 mA Environmental conditions ESD protection of output pins VAC and GND compliance to IEC 0801-2 (IV); note 3 2 − − kV ESD protection of sensor interface pins SA, SB and VP compliance to IEC 0801-2 (IV); note 4 0.3 − − kV Notes 1. Input hysteresis voltage is the difference between higher and lower switching point referred to input. 2. Temperature dependence of voltage hysteresis; see Fig.3. 3. Output pins are designed for electrostatic sensitivity with field strengths up to 2 kV according to Human Body Model (HBM), MIL-STD-883, method 3015. 4. Differential input pins are designed for electrostatic sensitivity with field strengths up to 0.3 kV according to Human Body Model (HBM), MIL-STD-883, method 3015. 2000 Sep 05 4 Philips Semiconductors Preliminary specification Trigger amplifier with two wire current interface FUNCTIONAL DESCRIPTION UZZ7000T An on-chip temperature sensor adapts the comparator hysteresis to the temperature dependent sensitivity of a typical magnetoresistive sensor from the Philips MR-Sensor KMZ families. The UZZ7000 is a differential input trigger amplifier with a two wire interface and sensor supply regulator. It is designed for application with magnetoresistive sensor bridges. The block diagram is shown in Fig.4 The UZZ7000T device and the connected sensor bridge are supplied from a two wire current interface. The digital output is directly related to the differential voltage input between pins SA and SB which switches the constant current source between 7 and 14 mA. The circuitry includes a voltage regulator for supply to an external sensor bridge. handbook, full pagewidth VP 7 mA UZZ7000 VAC 7 mA SA SB GND MLD403 Fig.4 Block diagram. 2000 Sep 05 5 Philips Semiconductors Preliminary specification Trigger amplifier with two wire current interface UZZ7000T PACKAGE OUTLINE SO8: plastic small outline package; 8 leads; body width 3.9 mm SOT96-1 D E A X c y HE v M A Z 5 8 Q A2 A (A 3) A1 pin 1 index θ Lp 1 L 4 e detail X w M bp 0 2.5 5 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (2) e HE L Lp Q v w y Z (1) mm 1.75 0.25 0.10 1.45 1.25 0.25 0.49 0.36 0.25 0.19 5.0 4.8 4.0 3.8 1.27 6.2 5.8 1.05 1.0 0.4 0.7 0.6 0.25 0.25 0.1 0.7 0.3 0.01 0.019 0.0100 0.014 0.0075 0.20 0.19 0.16 0.15 0.244 0.039 0.028 0.050 0.041 0.228 0.016 0.024 inches 0.010 0.057 0.069 0.004 0.049 0.01 0.01 0.028 0.004 0.012 θ Notes 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. 2. Plastic or metal protrusions of 0.25 mm maximum per side are not included. REFERENCES OUTLINE VERSION IEC JEDEC SOT96-1 076E03 MS-012 2000 Sep 05 EIAJ EUROPEAN PROJECTION ISSUE DATE 97-05-22 99-12-27 6 o 8 0o Philips Semiconductors Preliminary specification Trigger amplifier with two wire current interface UZZ7000T DATA SHEET STATUS DATA SHEET STATUS PRODUCT STATUS DEFINITIONS (1) Objective specification Development This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice. Preliminary specification Qualification This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. Product specification Production This data sheet contains final specifications. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. Note 1. Please consult the most recently issued data sheet before initiating or completing a design. DEFINITIONS DISCLAIMERS Short-form specification The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Life support applications These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Limiting values definition Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Right to make changes Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no licence or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Application information Applications that are described herein for any of these products are for illustrative purposes only. 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