SR12D Datasheet | Zarlink Semiconductor Inc

FEATURES s s s Standard SOT-23 Surface Mount Package Low Knee Current - Typically 80 µA Low temperature Coefficient ABSOLUTE MAXIMUM RATINGS Reference current Operating temperature range Storage temperature range 2.5m A -40°C to + 85°C -55°C to +125°C Fig.2 SR12D circuit diagram Fig.3 SR12D external connections. NOTE: In order to achieve optimum operation, an electrolytic stabilising capacitor (CS > 1µF) should be connected between VREF and 0V as shown in Fig. 3. ELECTRICAL CHARACTERISTICS These characteristics are guaranteed over the following conditions (unless otherwise stated): Tamb = +25°C, IREF = 150µA, CS = 1µF Value Characteristic Output voltage Slope resistance (see note 1) Turn-on (knee) current Remended operating current range Temperature coefficient (see note 2) RMS noise voltage Turn on time Turn off time Turn on time Turn off time Symbol Min. VREF RREF ION IREF TCVREF EN t ON t OFF t ON t OFF 0.09 40 40 10 7 24 0.4 1.8 1.193 Typ. Max. V Ω µA m A ppm/°C ppm/°C µV ms ms ms ms IREF = 5m A 0°C to +70°C -40°C to + 85°C 1Hz to 25k Hz IREF = 150µA to 2.5m A 1.230 1.267 2.5 1.5 80 90 2.5 125 120 Units Conditions NOTES 1. Slope Resistance (RREF) The slope resistance is defined as RREF = Change in VREF over specified current range The change in reference current 2. Reference Voltage Temperature Coefficient (TCVREF) This is the normalised reference voltage change over temperature , divided by the change in temperature. It is expressed in ppm/°C as follows: TCVREF = ∆VREF x 106 VREF x ∆T ppm/°C ∆T = temperature change in °C ∆VREF = change in reference voltage over temperature change ∆T. Fig.5 SR12D typical response time (not to scale) Fig.4 Typical reference characteristic Fig.6 Typical temperature characteristic of SR12D at IREF = 150µA Fig.7 Derating curve HEADQUARTERS OPERATIONS GEC PLESSEY SEMICONDUCTORS Cheney Manor, Swindon, Wiltshire SN2 2QW, United Kingdom. Tel: (0793) 518000 Fax: (0793) 518411 GEC PLESSEY SEMICONDUCTORS P.O....