Datasheet LTC1414 (Analog Devices) - 4
| Hersteller | Analog Devices |
| Beschreibung | 14-Bit, 2.2 Msps, Sampling A/D Converter |
| Seiten / Seite | 20 / 4 — W U. TI I G CHARACTERISTICS (Note 5). SYMBOL. PARAMETER. CONDITIONS. MIN. … |
| Dateiformat / Größe | PDF / 296 Kb |
| Dokumentensprache | Englisch |
W U. TI I G CHARACTERISTICS (Note 5). SYMBOL. PARAMETER. CONDITIONS. MIN. TYP. MAX. UNITS. Note 6:. Note 1:. Note 7:. Note 2:. Note 8:. Note 3:
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LTC1414
W U TI I G CHARACTERISTICS (Note 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
fSAMPLE(MAX) Maximum Sampling Frequency ● 2.2 MHz tCONV Conversion Time ● 220 330 400 ns tACQ Acquisition Time ● 40 100 ns tTHROUGHPUT Throughput Time (Acquisition + Conversion) ● 370 454 ns t1 CONVST to BUSY Delay CL = 25pF 10 ns t2 Data Ready Before BUSY↑ ±20 ns t3 Delay Between Conversions (Note 9) ● 100 ns t4 CONVST Low Time (Note 10) ● 40 ns t5 CONVST High Time (Note 10) ● 40 ns t6 Aperture Delay of Sample-and-Hold – 1 ns The ● denotes specifications which apply over the full operating
Note 6:
Linearity, offset and full-scale specifications apply for a single- temperature range; all other limits and typicals T + – A = 25°C. ended AIN input with AIN grounded.
Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 7:
Integral nonlinearity is defined as the deviation of a code from a of a device may be impaired. straight line passing through the actual endpoints of the transfer curve.
Note 2:
All voltage values are with respect to ground with DGND and The deviation is measured from the center of the quantization band. AGND wired together (unless otherwise noted).
Note 8:
Bipolar offset is the offset voltage measured from – 0.5LSB
Note 3:
When these pin voltages are taken below V when the output code flickers between 0000 0000 0000 00 and SS or above VDD, they will be clamped by internal diodes. This product can handle input currents 1111 1111 1111 11. greater than 100mA below VSS or above VDD without latchup.
Note 9:
Recommended operating conditions.
Note 4:
When these pin voltages are taken below VSS, they will be clamped
Note 10:
The falling CONVST edge starts a conversion. If CONVST returns by internal diodes. This product can handle input currents greater than high at a critical point during the conversion it can create small errors. For 100mA below VSS without latchup. These pins are not clamped to VDD. best results ensure that CONVST returns high either within 225ns after the
Note 5:
V start of the conversion or after BUSY rises. DD = 5V, VSS = – 5V, fSAMPLE = 2.2MHz and tr = tf = 5ns unless otherwise specified.
W U TYPICAL PERFOR A CE CHARACTERISTICS Signal-to-Noise Ratio vs Input S/(N + D) vs Input Frequency Frequency Distortion vs Input Frequency
14 86 90 0 13 80 80 –10 12 74 –20 70 11 68 –30 10 S/(N + D) (dB) 60 –40 9 50 –50 8 THD 40 7 –60 EFFECTIVE BITS 6 30 DISTORTION (dB) –70 5 SIGNAL-TO-NOISE RATIO (dB) 20 –80 3rd 4 10 –90 2nd 3 fSAMPLE = 2.2MHz 2 0 –100 1k 10k 100k 1M 10M 10k 100k 1M 10M 10k 100k 1M 10M INPUT FREQUENCY (Hz) INPUT FREQUENCY (Hz) INPUT FREQUENCY (Hz) 1414 TA02 1414 G02 1414 G03 4
W U TI I G CHARACTERISTICS (Note 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
fSAMPLE(MAX) Maximum Sampling Frequency ● 2.2 MHz tCONV Conversion Time ● 220 330 400 ns tACQ Acquisition Time ● 40 100 ns tTHROUGHPUT Throughput Time (Acquisition + Conversion) ● 370 454 ns t1 CONVST to BUSY Delay CL = 25pF 10 ns t2 Data Ready Before BUSY↑ ±20 ns t3 Delay Between Conversions (Note 9) ● 100 ns t4 CONVST Low Time (Note 10) ● 40 ns t5 CONVST High Time (Note 10) ● 40 ns t6 Aperture Delay of Sample-and-Hold – 1 ns The ● denotes specifications which apply over the full operating
Note 6:
Linearity, offset and full-scale specifications apply for a single- temperature range; all other limits and typicals T + – A = 25°C. ended AIN input with AIN grounded.
Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 7:
Integral nonlinearity is defined as the deviation of a code from a of a device may be impaired. straight line passing through the actual endpoints of the transfer curve.
Note 2:
All voltage values are with respect to ground with DGND and The deviation is measured from the center of the quantization band. AGND wired together (unless otherwise noted).
Note 8:
Bipolar offset is the offset voltage measured from – 0.5LSB
Note 3:
When these pin voltages are taken below V when the output code flickers between 0000 0000 0000 00 and SS or above VDD, they will be clamped by internal diodes. This product can handle input currents 1111 1111 1111 11. greater than 100mA below VSS or above VDD without latchup.
Note 9:
Recommended operating conditions.
Note 4:
When these pin voltages are taken below VSS, they will be clamped
Note 10:
The falling CONVST edge starts a conversion. If CONVST returns by internal diodes. This product can handle input currents greater than high at a critical point during the conversion it can create small errors. For 100mA below VSS without latchup. These pins are not clamped to VDD. best results ensure that CONVST returns high either within 225ns after the
Note 5:
V start of the conversion or after BUSY rises. DD = 5V, VSS = – 5V, fSAMPLE = 2.2MHz and tr = tf = 5ns unless otherwise specified.
W U TYPICAL PERFOR A CE CHARACTERISTICS Signal-to-Noise Ratio vs Input S/(N + D) vs Input Frequency Frequency Distortion vs Input Frequency
14 86 90 0 13 80 80 –10 12 74 –20 70 11 68 –30 10 S/(N + D) (dB) 60 –40 9 50 –50 8 THD 40 7 –60 EFFECTIVE BITS 6 30 DISTORTION (dB) –70 5 SIGNAL-TO-NOISE RATIO (dB) 20 –80 3rd 4 10 –90 2nd 3 fSAMPLE = 2.2MHz 2 0 –100 1k 10k 100k 1M 10M 10k 100k 1M 10M 10k 100k 1M 10M INPUT FREQUENCY (Hz) INPUT FREQUENCY (Hz) INPUT FREQUENCY (Hz) 1414 TA02 1414 G02 1414 G03 4