LTC1604 TIMING CHARACTERISTICS (Note 5) The l denotes specifications that apply over the full operating temperature Note 7: Integral nonlinearity is defined as the deviation of a code from a range. straight line passing through the actual endpoints of the transfer curve. Note 1: Absolute Maximum Ratings are those values beyond which the life The deviation is measured from the center of the quantization band. of a device may be impaired. Note 8: Typical RMS noise at the code transitions. See Figure 17 for Note 2: All voltage values are with respect to ground with DGND, OGND histogram. and AGND wired together unless otherwise noted. Note 9: Bipolar offset is the offset voltage measured from –0.5LSB when Note 3: When these pin voltages are taken below V the output code flickers between 0000 0000 0000 0000 and 1111 1111 SS or above VDD, they will be clamped by internal diodes. This product can handle input currents 1111 1111. greater than 100mA below VSS or above VDD without latchup. Note 10: Signal-to-Noise Ratio (SNR) is measured at 5kHz and distortion Note 4: When these pin voltages are taken below V is measured at 100kHz. These results are used to calculate Signal-to-Nosie SS, they will be clamped by internal diodes. This product can handle input currents greater than Plus Distortion (SINAD). 100mA below VSS without latchup. These pins are not clamped to VDD. Note 11: Guaranteed by design, not subject to test. Note 5: VDD = 5V, VSS = –5V, fSMPL = 333kHz, and tr = tf = 5ns unless Note 12: Recommended operating conditions. otherwise specified. Note 13: The falling CONVST edge starts a conversion. If CONVST returns Note 6: Linearity, offset and full-scale specification apply for a single- high at a critical point during the conversion it can create small errors. For ended A + – IN input with AIN grounded. best performance ensure that CONVST returns high either within 250ns after conversion start or after BUSY rises. TYPICAL PERFORMANCE CHARACTERISTICSIntegral Nonlinearity vsDifferential Nonlinearity vsS/(N + D) vs Input FrequencyOutput CodeOutput Codeand Amplitude 2.0 1.0 100 VIN = 0dB 0.8 1.5 90 0.6 80 1.0 VIN = –20dB 0.4 70 0.5 0.2 60 VIN = –40dB 0.0 0.0 50 INL (LSB) –0.2 –0.5 DNL (LSB) SINAD (dB) 40 –0.4 30 –1.0 –0.6 20 –1.5 –0.8 10 –2.0 –1.0 0 –32768 –16384 0 16384 32767 1k 10k 100k 1M –32768 –16384 0 16384 32767 FREQUENCY (Hz) CODE CODE 1604 G01 1604 G11 1604 G10 Signal-to-Noise Ratio vsSpurious-Free Dynamic RangeInput FrequencyDistortion vs Input Frequencyvs Input Frequency 100 0 0 90 –10 –10 80 –20 –20 –30 70 –30 –40 –40 60 –50 –50 50 –60 –60 40 –70 –70 30 –80 THD –80 SIGNAL-TO-NOISE RATIO (dB) 20 3RD –90 –90 10 –100 SPURIOUS-FREE DYNAMIC RANGE (dB) 2ND –100 AMPLITUDE (dB BELOW THE FUNDAMENTAL) 0 –110 –110 1k 10k 100k 1M 1k 10k 100k 1M 1k 10k 100k 1M FREQUENCY (Hz) INPUT FREQUENCY (Hz) INPUT FREQUENCY (Hz) 1604 G03 1604 G04 1604 G05 1604fa 5