LTC1164-7 Linear Technology, LTC1164-7 Datasheet
LTC1164-7
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LTC1164-7 Summary of contents
Page 1
... Bessel), while at three times the cutoff fre- quency the filter attains 68dB attenuation (vs 30dB for Bessel). The cutoff frequency of the LTC1164-7 is tuned via an external TTL or CMOS clock. Low power is achieved without sacrificing dynamic range. ...
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... CLK S Phase Factor ( F ) Phase = 180 – (Note 1) Phase Nonlinearity (Note Operating Temperature Range LTC1164-7C ...................................... – LTC1164-7M ................................... – 125 C + Lead Temperature (Soldering, 10 sec)................ 300 0.3V ORDER PART NUMBER GND 3 LTC1164-7CN + ...
Page 3
... F is arbitrarily called the “phase factor” expressed in degrees. The phase factor together with the specified deviation from the ideal straight line allows the calculation of the phase at a given frequency. Example: The phase shift at 7kHz of the LTC1164-7 shown in Figure 1 is: phase shift = 180 – 434 (7kHz/10kHz) nonlinearity = –123 –123.9 1 ...
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... LTC1164 TYPICAL PERFOR A Gain vs Frequency 10 0 –10 –20 –30 100:1 50:1 –40 –50 –60 –70 – ±5V S – 500kHz CLK –100 T = 25°C A –110 0 100 FREQUENCY (kHz) 1264-7 G01 Phase Factor vs f (Min and CLK Max Representative Units) 438 V = ±5V ...
Page 5
... IN RMS f = 500kHz – 50 CLK ( 50:1 CLK C – REPRESENTA- TIVE UNITS) – 60 –65 – 70 –75 –80 –85 – FREQUENCY (kHz) LTC1164-7 Passband Gain vs Frequency and f CLK ± 100 CLK 25° – ...
Page 6
... LTC1164 TYPICAL PERFOR A THD + Noise vs Frequency – ±5V S – RMS f = 500kHz – 50 CLK ( 100:1 CLK C – REPRESENTA- TIVE UNITS) – 60 –65 – 70 –75 –80 –85 – FREQUENCY (kHz) 1164-7 G18 THD + Noise vs Frequency – 40 ...
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... Unit) CLK 0.000 180.00 2.500 70.99 5.000 – 37.75 7.500 – 146.83 10.000 – 256.88 LTC1164 GAIN (dB) PHASE (DEG) – 0.201 180.00 – 0.201 71.39 – 0.727 – 36.79 – 2.075 – 143.66 – 5.205 – 247.79 – 0.176 180.00 – ...
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... LTC1164 TYPICAL PERFOR A Table 5. Passband Gain and Phase V = Single 5V, Ratio = 50: FREQUENCY (kHz) GAIN (dB 250kHz (Typical Unit) CLK 0.000 – 0.085 1.250 – 0.085 2.500 – 0.252 3.750 – 1.056 5.000 – 3.562 f = 500kHz (Typical Unit) CLK 0.000 – ...
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... Pin interme- 1164-7 F03 diate filter output providing an unspecified 6th order /f = 50:1 CLK CUTOFF lowpass filter. Pin 6 should not be loaded. LTC1164-7 – gives a 100:1 ratio. For – LT1056 1k + 1164-7 F04 Figure 4. Buffer for Filter Output ...
Page 10
... Pins 1, 8 and 13 are not connected to any internal circuit point on the device and should be preferably tied to analog ground LTC1164-7 wideband noise at 5V supply is 105 which have frequency contents from RMS the filter’s cutoff frequency. The total wideband noise ( nearly independent of the value of the clock ...
Page 11
... U If, for instance, an LTC1164-7 operating with a 100kHz clock and 1kHz cutoff frequency receives a 98kHz 10mV input signal, a 2kHz, 143 V its output. When the LTC1164-7 operates with a clock-to- cutoff frequency of 50:1, aliasing occurs at twice the clock frequency. Table 11 shows details. Table 11. Aliasing (f INPUT FREQUENCY ...
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... LTC1164-7 PACKAGE DESCRIPTIO 0.290 – 0.320 (7.366 – 8.128) 0.008 – 0.018 0° – 15° (0.203 – 0.460) 0.385 ± 0.025 0.038 – 0.068 (9.779 ± 0.635) (0.965 – 1.727) 0.300 – 0.325 (7.620 – 8.255) 0.015 (0.380) MIN 0.130 ± 0.005 (3.302 ± ...