Datasheet LTC1197, LTC1197L, LTC1199, LTC1199L (Analog Devices) - 9

LTC1197/LTC1197L LTC1199/LTC1199L
W U TYPICAL PERFOR A CE CHARACTERISTICS Linearity vs Temperature Offset vs Temperature Gain Error vs Temperature
0.5 0 0 VCC = 5V V VCC = 5V – 0.1 CC = 5V VREF = 5V VREF = 5V – 0.2 VREF = 5V 0.4 fCLK = 7.2MHz f f – 0.2 CLK = 7.2MHz CLK = 7.2MHz – 0.4 – 0.3 0.3 – 0.4 – 0.6 – 0.5 – 0.8 0.2 – 0.6 – 0.7 GAIN ERROR (LSBs) –1.0 LINEARITY ERROR (LSBs) OFFSET VOLTAGE (LSBs) 0.1 – 0.8 – 1.2 – 0.9 0 – 1.0 – 1.4 –55 – 30 – 5 20 45 70 95 120 –55 – 30 – 5 20 45 70 95 120 –55 – 30 – 5 20 45 70 95 120 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 1197/99 G19 1197/99 G20 1197/99 G21
Minimum Clock Frequency for Digital Input Threshold Input Channel Leakage Current 0.1LSB Error* vs Temperature vs Supply Voltage vs Temperature
1000 5 100 VREF = 5V TA = 25°C VREF = 5V VCC = 5V VCC = 5V 4 10 100 ON CHANNEL 3 1 10 OFF CHANNEL 2 0.1 1 LOGIC THRESHOLD (V) LEAKAGE CURRENT (nA) 1 0.01 MINIMUM CLOCK FREQUENCY (kHz) 0.1 0 0.001 – 55 – 35 – 15 5 25 45 65 85 105 125 0 2 4 6 8 10 0 25 50 75 100 125 TEMPERATURE (°C) SUPPLY VOLTAGE (V) TEMPERATURE (°C) 1197/99 G22 1197/99 G23 1197/99 G24
Acquisition Time Maximum Clock Frequency Maximum Clock Frequency† vs Source Resistance vs Supply Voltage vs Source Resistance
100 11 10000 VCC = VREF = 5V VREF = 2.5V VREF = VCC = 5V T 10 A = 25°C TA = 25°C TA = 25°C 9 µs) 8 10 R + 7 SOURCE VIN + INPUT 6 COM 1000 5 4 1 VIN + INPUT ACQUISITION TIME ( 3 – INPUT 2 – MAXIMUM CLOCK FREQUENCY (MHz) MAXIMUM CLOCK FREQUENCY (kHz) RSOURCE 1 0.1 0 100 100 1000 10000 0 1 2 3 4 5 6 7 8 9 10 100 1000 10000 SOURCE RESISTANCE (Ω) SUPPLY VOLTAGE (V) SOURCE RESISTANCE (Ω) 1197/99 G25 1197/99 G26 1197/99 G27 *As the CLK frequency is decreased from 2MHz, minimum CLK frequency (∆error ≤ 0.1LSB) † Maximum CLK frequency represents the clock frequency at which a 0.1LSB shift in the error represents the frequency at which a 0.1LSB shift in any code translation from its 2MHz value at any code transition from its 3.5MHz value is first detected. is first detected. 9