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LM12L458 データシート(PDF) 6 Page - Texas Instruments |
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LM12L458 データシート(HTML) 6 Page - Texas Instruments |
6 / 38 page LM12L458 SNAS085B – JULY 1999 – REVISED MARCH 2013 www.ti.com DC Characteristics The following specifications apply for VA+ = VD+ = +3.3V, VREF+ = +2.5V, VREF− = 0V, fCLK = 6.0 MHz and minimum acquisition time unless otherwise specified. Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25°C. (1) (2) (3) Symbol Parameter Conditions Typical(4) Limits(5) Units ID+ VD+ Supply Current CS = “1” 0.4 1.0 mA (max) IA+ VA+ Supply Current CS = “1” 2.25 3.5 mA (max) Stand-By Supply Current Clock Stopped 1.5 4.5 μA (max) Power-Down IST (ID+ + IA+) Mode Selected 6 MHz Clock 30 μA (max) ON-Channel = 3.6V 0.1 0.3 μA (max) OFF-Channel = 0V Multiplexer ON-Channel Leakage VA+ = +3.6V Current ON-Channel = 0V 0.1 0.3 μA (max) OFF-Channel = 3.6V ON-Channel = 3.6V 0.1 0.3 μA (max) OFF-Channel = 0V Multiplexer OFF-Channel VA+ = +3.6V Leakage Current ON-Channel = 0V 0.1 0.3 μA (max) OFF-Channel = 3.6V VIN = +3.3V 850 1500 Ω RON Multiplexer ON-Resistance VIN = +1.65V 1300 2000 Ω VIN = 0V 830 1500 Ω VIN = +3.3V ±1.0% ±3.0% Ω Multiplexer Channel-to-Channel VIN = +1.65V ±1.0% ±3.0% Ω RON matching VIN = 0V ±1.0% ±3.0% Ω (1) Two on-chip diodes are tied to each analog input through a series resistor, as shown below. Input voltage magnitude up to 5V above VA+ or 5V below GND will not damage the LM12L458. However, errors in the A/D conversion can occur if these diodes are forward biased by more than 100 mV. As an example, if VA+ is 3.0 VDC, full-scale input voltage must be =3.1 VDC to ensure accurate conversions. See Figure 3 (2) VA+ and VD+ must be connected together to the same power supply voltage and bypassed with separate capacitors at each V + pin to assure conversion/comparison accuracy. (3) Accuracy is ensured when operating at fCLK = 6 MHz. (4) Typical figures are at TA = 25°C and represent most likely parametric norm. (5) Limits are specified to AOQL (Average Output Quality Level). 6 Submit Documentation Feedback Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: LM12L458 |
同様の部品番号 - LM12L458_16 |
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同様の説明 - LM12L458_16 |
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