A1377LUCTN-TC3-T

A1377 Highly Programmable Linear Hall-Effect Sensor IC DESCRIPTION FEATURES AND BENEFITS • On-board diagnostics □□ Broken ground detection □□ VCC undervoltage detection □□ VCC overvoltage detection • Customer-programmable offset, sensitivity, polarity, and output clamps • Integrated power supply and output bypass capacitors • Customer and factory access code for enhanced reliability □□ Factory code required for write access to TC trim and other factory registers □□ Customer code required for write access to customer registers The Allegro™ A1377 programmable linear Hall-effect sensor IC is designed for applications that require high accuracy and high resolution without compromising bandwidth. The A1377 employs segmented, linearly interpolated temperature compensation technology. This improvement greatly reduces the total error of the device across the whole temperature range. As a result, the device is ideally suited for sensing in numerous automotive applications, such as linear and rotary position sensors in actuators and valves. Available in a through-hole, small form factor, single in-line package (SIP), the A1377 Hall-effect sensor IC has a broad range of sensitivity and offset operating bandwidth. The accuracy and flexibility of this device is enhanced with user programmability, via the VCC and output pins, which allows the device to be optimized in the application. Continued on the next page… PACKAGE: 3-pin SIP (suffix UC) This ratiometric Hall-effect sensor IC provides a voltage output that is proportional to the applied magnetic field. The quiescent voltage output (QVO) is user-adjustable from approximately 5% to 95% of the supply voltage. The device sensitivity is adjustable within the range of 1 to 14 mV/G. The features of this linear device make it ideal for use in automotive and industrial applications requiring high accuracy, and apply across an extended temperature range, from –40°C to 150°C. Not to scale Continued on the next page… A1377 IC VCC (Programming) 100 nF Undervoltage and Overvoltage Detection Regulator Pulse Generator Level Detector EEPROM Broken Ground Detection To all subcircuits Temperature Sensor Dynamic Offset Cncellation Sensitivity Control Control Logic Active Temperature Compensation Offset Control Signal Recovery PushPull Address Decoding Output Clamps Transmit and Receive Control VOUT (Programming) 100 nF GND Functional Block Diagram A1377-DS, Rev. 2 MCO-0000607 February 22, 2019 A1377 Highly Programmable Linear Hall-Effect Sensor IC FEATURES AND BENEFITS (continued) • Temperature-stable quiescent voltage output and sensitivity: sensitivity temperature coefficient (TC) and QVO temperature coefficient programmed at Allegro for improved accuracy • Optional output voltage clamps provide short-circuit diagnostic capabilities • Wide ambient temperature range: –40°C to 150°C • Enhanced EMC performance for stringent automotive applications DESCRIPTION (continued) Each BiCMOS monolithic circuit integrates a Hall element, temperature-compensating circuitry to reduce the intrinsic sensitivity drift of the Hall element, a small-signal high-gain amplifier, a clamped low-impedance output stage and a proprietary dynamic offset cancellation technique. The A1377 sensor is provided in a 3-pin single in-line package (UC suffix) with bypass capacitors integrated into the package. It is lead (PB) free, with 100% matte-tin leadframe plating. SELECTION GUIDE Part Number Packing* A1377LUCTN–TC[N]–T 4000 pieces per 13-inch reel *Contact Allegro™ for additional packing options. Configuration Option A1377LUCTN - TCN - T Leadframe plating – T : 100% matte tin Temperature Compensation (%/°C) TC1: 0.12 (Default; for NdFeB) TC3: 0.035 (For SmCo) Allegro Identifier and Device Type – A1377 Operating Temperature Range, TA – L: –40°C to 150°C Package Designator – UC Instructions (Packing) – TN: Tape and reel, 4000 pieces per 13-inch reel Specifications Pinout Diagram and Terminal List Operating Characteristics Characteristic Definitions Functional Description Diagnostic Conditions Undervoltage Detection Overvoltage Detection Broken Ground Detection EEPROM Diagnostics EEPROM Margin Checking 3 3 4 8 12 12 12 12 12 12 12 Table of Contents Application Information Programming Guidelines Serial Communication Memory Address Map Programmable Parameter Reference Package Outline Drawing 14 15 15 19 21 24 Allegro MicroSystems, LLC 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 2 A1377 Highly Programmable Linear Hall-Effect Sensor IC SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS Rating Unit Forward Supply Voltage Characteristic Symbol VCC Notes 16 V Reverse Supply Voltage VRCC –16 V Forward Output Voltage VOUT VOUT < VCC + 2 16 V Reverse Output Voltage VROUT TJ(max) not exceeded –5 V Output Source Current IOUT(SOURCE) VOUT to GND 10 mA IOUT(SINK) VCC to VOUT –10 mA At absolute maximum conditions, the device sinks not more than 50 mA –50 mA –40 to 150 ºC Output Sink Current Reverse Supply Current IRCC Operating Ambient Temperature TA Maximum Junction Temperature TJ(max) 165 ºC Tstg –65 to 170 ºC Storage Temperature L temperature range THERMAL CHARACTERISTICS: May require derating at maximum conditions; see application information Characteristic Symbol Package Thermal Resistance RθJA Test Conditions* Estimated, on single-layer PCB with copper limited to solder pads Value Unit 201 ºC/W *Additional thermal information available on the Allegro website. 1 2 3 VCC GND VOUT Terminal List Table Number Name Function 1 VCC Device power supply, also used for programming 2 GND Device ground 3 VOUT Output signal, also used for programming UC Package Pinout Diagram Allegro MicroSystems, LLC 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 3 A1377 Highly Programmable Linear Hall-Effect Sensor IC OPERATING CHARACTERISTICS: Valid across full TA range, CBYPASS = 0.1 µF (internal), VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. Max. Unit 1 4.5 5 5.5 V ELECTRICAL CHARACTERISTICS Supply Voltage VCC Supply Current ICC No load on VOUT Reverse Supply Current IRCC VCC = –15 V, TA = 25°C Power-On Time 2 tPO Delay to Clamp 2 tCLP Internal Bandwidth BWi – 7.5 10 mA –10 – – mA TA = 25°C, CLOAD(PROBE) = 10 pF – 400 2000 µs TA = 25°C, CLI = 100 nF – 30 – µs Large signal –3 dB – 2.5 – kHz fC TA = 25°C – 125 – kHz VN TA = 25°C, CBYPASS = open, Sens = 2.5 mV/G, no load on VOUT – 2.1 6 mVRMS Input-Referred RMS Noise Density 11 VNRMS TA = 25°C, CBYPASS = open, no load on VOUT, magnetic input signal frequency