Specifications117Analog Output SpecificationsTable 22 lists the specifications for the analog output subsystem on the DT9847 Seriesmodules. Unless otherwise noted, specifications are typical at 25C.Table 22: Analog Output Subsystem SpecificationsFeature DT9847 Series SpecificationsNumber of analog output channelsDT9847-1-1:DT9847-2-2:DT9847-3-1:1, single-ended2, single-ended1, single-endedResolution 32 bitsD/A type Delta SigmaOutput range ±3 V or ±10 V, software programmable aData encoding Offset binaryMinimum sample frequency 30 kHzMaximum sample frequency 216 kHzGroup delay (typical) 36/sample rate, in sDAC Delta Sigma filter bPassband, –3 dB:Passband ripple, ±0.005 dB:Stopband:Stopband attenuation, –100 dB:Stopband attenuation, –95 dB:Stopband attenuation, –90 dB:0.49 x sample frequency, Hz0.454 x sample frequency, Hz0.546 x sample frequency, Hzsample frequency 44.1 kHzsample frequency 96 kHzsample frequency 192 kHzAnalog filter b 250 kHz, 2-pole, low-pass ButterworthOutput current ±3 mA maximum load (3 V across 1 k; 10 V across 3.3 kOutput FIFO 8 kSamplesIdle channel noise(216 kSPS)±3 V range ±10 V range15 VRMS 30 VRMSTotal Harmonic Distortion, THD c(216 kSPS–1 dBFS, 1 kHz output, 3.3 k load:–6 dBFS, 1 kHz output, 3.3 k load:±3 V range ±10 V range–102 dB –106 dB–110 dB –110 dBSpurious Free Dynamic Range, SFDR c(216 kSPS)–1 dBFS, 1 kHz output, 3.3 k load:–6 dBFS, 1 kHz output, 3.3 k load:±3 V range ±10 V range103 dB 108 dB107 dB 115 dBOffset error ±1 mVOffset error temperature coefficient ±3 V range ±10 V range100 V/C 130 V/CGain error ±1.0%
