LTC1861 LINER [Linear Technology], LTC1861 Datasheet
LTC1861
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LTC1861 Summary of contents
Page 1
... These 12-bit switched capacitor successive approximation ADCs include sample-and-holds. The LTC1860 has a differential analog input with an adjustable reference pin. The LTC1861 offers a software-selectable 2-channel MUX and an ad- justable reference pin on the MSOP version. The 3-wire, serial I/O, MSOP or SO-8 package and ...
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... REF Analog Input Leakage Current C Input Capacitance (Notes 1, 2) Power Dissipation .............................................. 400mW Operating Temperature Range LTC1860C/LTC1861C ............................. LTC1860I/LTC1861I .......................... – 0.3V) CC Storage Temperature Range ................. – 150 C Lead Temperature (Soldering, 10 sec)................. 300 C + 0.3V ORDER PART NUMBER CONV ...
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... I Hi-Z Output Leakage OZ I Output Source Current SOURCE I Output Sink Current SINK I Reference Current (LTC1860 SO-8, MSOP and CONV = V REF LTC1861 MSOP) I Supply Current CC P Power Dissipation RECO E DED OPERATI G CO DITIO S full operating temperature range, otherwise specifications are T SYMBOL PARAMETER ...
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... LTC1860/LTC1861 CHARACTERISTICS range, otherwise specifications are Conditions, unless otherwise noted. SYMBOL PARAMETER t Conversion Time (See Figure 1) CONV f Maximum Sampling Frequency SMPL(MAX) t Delay Time, SCK to SDO Data Valid dDO t Delay Time, CONV to SDO Hi-Z dis t Delay Time, CONV to SDO Enabled ...
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... CODE Change in Offset vs Temperature 1 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1 –50 –25 25 TEMPERATURE ( C) LTC1860/LTC1861 Reference Current vs Reference Voltage 250kHz 100 125 V (V) REF 1860/61 G05 ...
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... LTC1860/LTC1861 W U TYPICAL PERFOR A CE CHARACTERISTICS Change in Gain Error vs Temperature 1 0 REF 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 –50 – 100 TEMPERATURE ( C) 1860/61 G13 Signal-to-(Noise + Distortion 100 0dB IN 80 SNR SINAD 40 30 ...
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... IN (CH1) GND LTC1861 (SO-8 Package) CONV (Pin 1): Convert Input. A logic high on this input starts the A/D conversion process. If the CONV input is left high after the A/D conversion is finished, the part powers down. A logic low on this input enables the SDO pin, allowing the data to be shifted out. ...
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... ADC. If “IN is grounded and V will result on “IN Reference Input The voltage on the reference input of the LTC1860 (and the LTC1861 MSOP package) defines the full-scale range of the A/D converter. These ADCs can operate with reference voltages from ...
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... Reference Input The reference input of the LTC1861 SO-8 package is internally tied to V therefore equal the LTC1861 MSOP package defines the span of the A/ D converter. The LTC1861 MSOP package can operate with reference voltages from LTC1860/LTC1861 t ...
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... To achieve the optimum performance, use a printed circuit board. The ground pins (AGND and DGND for the LTC1861 MSOP package and GND for the LTC1860 and LTC1861 SO-8 package) should be tied directly to the analog ground plane with minimum lead length ...
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... Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) 0.053 – 0.069 (1.346 – 1.752) 0.004 – 0.010 (0.101 – 0.254) 0.014 – 0.019 0.050 (1.270) (0.355 – 0.483) TYP BSC LTC1860/LTC1861 3.00 0.102 (.118 .004) 0.52 (NOTE 3) (.206 REF 3.00 0.102 4.88 0.1 (.118 .004) ( ...
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... LTC1860/LTC1861 U TYPICAL APPLICATIO Sample Two Channels Simultaneously with a Single Input ADC 0 (0V TO 0.66V) 4.096V REF 28.7k 10k (0V TO 2V) RELATED PARTS PART NUMBER SAMPLE RATE 12-Bit Serial I/O ADCs LTC1286/LTC1298 12.5ksps/11.1ksps LTC1400 400ksps LTC1401 200ksps LTC1402 2.2Msps LTC1404 600ksps ...