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71M6531D Datasheet(PDF) 100 Page - Teridian Semiconductor Corporation |
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71M6531D Datasheet(HTML) 100 Page - Teridian Semiconductor Corporation |
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100 / 115 page  Data Sheet 71M6531D/F-71M6532D/F FDS 6531/6532 005 100 © 2005-2009 TERIDIAN Semiconductor Corporation v1.2 5.4.13 Temperature Sensor Table 76 shows the performance for the temperature sensor. The LSB values do not include the 8-bit left shift at CE input. Table 76: Temperature Sensor Performance Specifications Parameter Condition Min Typ Max Unit Nominal relationship: N(T) = Sn*(T-Tn) + Nn, Tn = 25ºC Nominal Sensi- tivity (Sn) 4 3 3 00109 . 0 ⋅ − = L S n [M40MHZ, M26MH] = [00], [10], or [11] FIR_LEN=0 (L=138) FIR_LEN=1 (L=288) FIR_LEN=2 (L=384) -106 -964 -2286 LSB/ºC [M40MHZ, M26MHZ] = [01] FIR_LEN=0 (L=186) FIR_LEN=1 (L=384) FIR_LEN=2 (L=588) -260 -2286 -8207 NominalOffset (Nn) 4 3 3 508 . 0 ⋅ = L N n [M40MHZ, M26MHZ] = [00], [10], or [11] FIR_LEN=0 (L=138) FIR_LEN=1 (L=288) FIR_LEN=2 (L=384) 49447 449446 1065353 LSB [M40MHZ, M26MHZ] = [01] FIR_LEN=0 (L=186) FIR_LEN=1 (L=384) FIR_LEN=2 (L=588) 121071 1065353 3825004 Temperature Error 1 − − = n n S N T N T ERR ) ) ( ( Tn = 25°C, T = -40ºC to +85ºC -10 10 ºC Nn is measured at Tn during meter calibration and is stored in MPU or CE for use in temperature calcula- tions. 5.4.14 VREF Table 77 shows the performance specifications for VREF. Unless otherwise specified, VREF_DIS = 0. Table 77: VREF Performance Specifications Parameter Condition Min Typ Max Unit VREF output voltage, VREF(22) Ta = 22ºC 1.193 1.195 1.197 V VREF chop step 40 mV VREF power supply sensitivity ΔVREF / ΔV3P3A V3P3A = 3.0 to 3.6 V -1.5 1.5 mV/V VREF input impedance VREF_DIS = 1, VREF = 1.3 to 1.7 V 100 kΩ VREF output impedance CAL =1, ILOAD = 10 µA, -10 µA 2.5 kΩ VNOM definition a 6 2 6 10 2 ) 22 ( 10 1 ) 22 ( ) 22 ( ) ( − − ⋅ − + ⋅ − + = TC T TC T VREF T VNOM V VNOM temperature coefficients: TC1 TC2 3.18·(52.46-TRIMT) -0.444 µV/ºC µV/°C 2 VREF(T) deviation from VNOM(T) ) 40 , 22 max( 10 ) ( ) ( ) ( 6 − − T T VNOM T VNOM T VREF -40 +40 PPM/ºC VREF aging ±25 PPM/ year a This relationship describes the nominal behavior of VREF at different temperatures. |
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