Datasheet LTC2348-18 (Analog Devices) - 10

LTC2348-18
Typical perForMance characTerisTics TA = 25°C, VCC = +15V, VEE = –15V, VDD = 5V, OVDD = 2.5V, Internal Reference and Buffer (VREFBUF  = 4.096V), fSMPL = 200ksps, unless otherwise noted. 32k Point Arbitrary 32k Point Two-T Two one FF -T T f one F SMPL FT = 32k Point FFT 32k Point FF f T fSMPL = 200kHz, 32k Point FFT 32k Point FF f SMPL = 200kHz, T fSMPL = 200kHz, = 200kHz, f200kHz, IN+ = –7dBFS 2kHz Sine, f SMPL = 200kHz, IN+ = –7dBFS 2kHz fIN = 2kHz f IN = 2kHz IN = 2kHz = 2kHz Sine, IN IN– – = –7dBFS 3.1kHz Sine = –7dBFS 3.1kHz Sine
0 0 0 ±10.24V RANGE ±10.24V RANGE ±10.24V RANGE –20 TRUE BIPOLAR DRIVE (IN– = 0V) –20 FULLY DIFFERENTIAL DRIVE (IN– = –IN+) –20 ARBITRARY DRIVE –40 SNR = 96.7dB –40 SNR = 96.7dB –40 SFDR = 119dB THD = –109dB THD = –119dB SNR = 96.7dB –60 SINAD = 96.5dB –60 SINAD = 96.6dB –60 SFDR = 110dB SFDR = 120dB –80 –80 –80 –100 –100 –100 6.2kHz –120 AMPLITUDE (dBFS) –120 AMPLITUDE (dBFS) –120 AMPLITUDE (dBFS) –140 –140 –140 –160 –160 –160 –180 –180 –180 0 20 40 60 80 100 0 20 40 60 80 100 0 20 40 60 80 100 FREQUENCY (kHz) FREQUENCY (kHz) FREQUENCY (kHz) 234818 G10 234818 G11 234818 G12
32k Point FFT 32k Point FF f T fSMPL = 200kHz, = 200kHz, SNR, SINAD vs VREFBUF, THD, Harmonics vs VREFBUF THD, Harmonics vs V , REFBUF, fIN = 2kHz = 2kHz fIN = 2kHz SNR, SINAD vs VREFBUF, fIN = 2kHz fIN f  = 2kHz IN = 2kHz
0 100.0 –100.0 ±5.12V RANGE ±2.5 • VREFBUF RANGE ±2.5 • VREFBUF RANGE –20 TRUE BIPOLAR DRIVE (IN– = 0V) TRUE BIPOLAR DRIVE (IN– = 0V) TRUE BIPOLAR DRIVE (IN– = 0V) –105.0 –40 SNR = 93.2dB 98.0 THD = –113dB THD –60 SNR SINAD = 93.2dB –110.0 SFDR = 114dB 96.0 –80 SINAD –115.0 –100 2ND 3RD 94.0 –120 AMPLITUDE (dBFS) SNR, SINAD (dBFS) –120.0 –140 THD, HARMONICS (dBFS) 92.0 –125.0 –160 –180 90.0 –130.0 0 20 40 60 80 100 2.5 3 3.5 4 4.5 5 2.5 3 3.5 4 4.5 5 FREQUENCY (kHz) REFBUF VOLTAGE (V) REFBUF VOLTAGE (V) 234818 G13 234818 G14 234818 G15
SNR, SINAD SNR, SINAD THD, Harmonics THD, Harmonics THD, Harmonics vs Input THD, Harmonics vs Input vs Input Frequency vs Input Frequency Common Mode, fIN = 2kHz
102.0 –70.0 0 ±10.24V RANGE ±10.24V RANGE ±10.24V RANGE TRUE BIPOLAR DRIVE (IN– = 0V) TRUE BIPOLAR DRIVE (IN– = 0V) –20 2VP-P FULLY DIFFERENTIAL DRIVE 98.0 –80.0 –40 SNR –14.5V ≤ VCM ≤ 10.5V 94.0 –90.0 –60 SINAD 90.0 –100.0 –80 –100 86.0 SNR, SINAD (dBFS) –110.0 THD THD, HARMONICS (dBFS) 2ND THD, HARMONICS (dBFS) –120 THD 82.0 –120.0 3RD –140 3RD 2ND 78.0 –130.0 –160 100 1k 10k 100k 100 1k 10k 100k –15 –10 –5 0 5 10 15 FREQUENCY (Hz) FREQUENCY (Hz) INPUT COMMON MODE (V) 234818 G16 234818 G17 234818 G18 234818fa 10 For more information www.linear.com/LTC2348-18 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Reference Buffer Characteristics Digital Inputs and Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Configuration Tables Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Revision History Typical Application Related Parts