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ADC12D1620QML-SP Datasheet(PDF) 5 Page - Texas Instruments |
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ADC12D1620QML-SP Datasheet(HTML) 5 Page - Texas Instruments |
5 / 82 page GND VA 200k 8 pF VCMO Enable AC Coupling VA GND VA VA GND GND Tdiode_P Tdiode_N GND VA V GND VA V 5 ADC12D1620QML-SP www.ti.com SNAS717 – APRIL 2017 Product Folder Links: ADC12D1620QML-SP Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Pin Functions: Analog Front-End and Clock Pins (continued) PIN TYPE DESCRIPTION EQUIVALENT CIRCUIT NAME NO. Rext+ Rext– C3/D3 I/O External reference resistor terminals. Connect a 3.3- kΩ, ±0.1% resistor between Rext+, Rext–. The Rext resistor is used as a reference to trim internal circuits that affect the linearity of the converter; the value and precision of this resistor must not be compromised. Rtrim+ Rtrim– C1/D2 I/O Input termination trim resistor terminals. Connect a 3.3-kΩ, ±0.1%resistor between Rtrim+/ Rtrim–. The Rtrim resistor is used to establish the calibrated 100-Ω input impedance of Vinl, VinQ, and CLK. These impedances may be fine-tuned by varying the value of the resistor by a corresponding percentage; however, the tuning range and performance is not tested for such an alternative values. Tdiode+ Tdiode– E2/F3 O Temperature sensor diode positive (anode) and negative (cathode) terminals. This set of pins is used for die temperature measurements. It has not been fully characterized. VBG B1 I/O Bandgap voltage output or LVDS common-mode voltage select. This pin provides a buffered version of the bandgap output voltage; it is capable of sourcing/sinking 100 μA and driving a load of up to 80 pF. Alternately, this pin may be used to select the LVDS digital output common-mode voltage. If tied to logic-high, the 1.2-V LVDS common-mode voltage is selected; 0.8 V is the default. VCMO C2 I/O Common-mode voltage. This pin is the common- mode output in DC-coupling mode and also serves as the AC-coupling mode select pin. When DC- coupling is used at the analog inputs, the voltage output at this pin is required to be the common- mode input voltage at VIN+ and VIN −. When AC- coupling is used, this pin must be grounded. This pin is capable of sourcing or sinking 100 μA. |
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