Datasheet LTC1850, LTC1851 (Analog Devices) - 4
| Fabricante | Analog Devices |
| Descripción | 8-Channel, 12-Bit, 1.25Msps Sampling ADCs |
| Páginas / Página | 28 / 4 — DY A IC ACCURACY (Note 5). LTC1850. LTC1851. SYMBOL. PARAMETER. … |
| Formato / tamaño de archivo | PDF / 295 Kb |
| Idioma del documento | Inglés |
DY A IC ACCURACY (Note 5). LTC1850. LTC1851. SYMBOL. PARAMETER. CONDITIONS. MIN. TYP. MAX. UNITS. I TER AL REFERE CE TA = 25
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LTC1850/LTC1851
U W DY A IC ACCURACY (Note 5) LTC1850 LTC1851 SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio 47kHz Input Signal Unipolar, PGA = 0 61.6 71 dB Unipolar, PGA = 1 61.7 72 dB Bipolar, PGA = 0 61.6 71 dB Bipolar, PGA = 1 61.7 72 dB S/(N+D) Signal-to-(Noise + Distortion) Ratio 47kHz Input Signal Unipolar, PGA = 0 61.0 70 dB Unipolar, PGA = 1 61.0 71 dB Bipolar, PGA = 0 61.0 71 dB Bipolar, PGA = 1 61.2 72 dB THD Total Harmonic Distortion 47kHz Input Signal, Unipolar, PGA = 0 First 5 Harmonics –76 –80 dB Unipolar, PGA = 1 –78 –82 dB Bipolar, PGA = 0 –81 –87 dB Bipolar, PGA = 1 –80 –86 dB SFDR Spurious-Free Dynamic Range 47kHz Input Signal Unipolar, PGA = 0 74 82 dB Unipolar, PGA = 1 80 86 dB Bipolar, PGA = 0 84 90 dB Bipolar, PGA = 1 82 88 dB
U U U I TER AL REFERE CE TA = 25
°
C. (Notes 5, 6) PARAMETER CONDITIONS MIN TYP MAX UNITS
REFOUT Output Voltage IOUT = 0 2.48 2.50 2.52 V REFOUT Output Temperature Coefficient IOUT = 0 ±15 ppm/°C REFOUT Line Regulation 0.01 LSB/V Reference Buffer Gain VREFCOMP/VREFIN 1.636 1.638 1.640 V/V REFCOMP Output Voltage External 2.5V Reference 4.090 4.096 4.100 V Internal 2.5V Reference 4.060 4.096 4.132 V REFCOMP Impedance REFIN = VDD 6.4 kΩ
U U DIGITAL I PUTS A D DIGITAL OUTPUTS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. (Note 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIH High Level Input Voltage VDD = 5.25V ● 2.4 V VIL Low Level Input Voltage VDD = 4.75V ● 0.8 V IIN Digital Input Current VIN = 0V to VDD ● ±5 µA CIN Digital Input Capacitance 2 pF VOH High Level Output Voltage VDD = 4.75V, IO = –10µA 4.5 V VDD = 4.75V, IO = – 200µA ● 4.0 V VOL Low Level Output Voltage VDD = 4.75V, IO = 160µA 0.05 V VDD = 4.75V, IO = 1.6mA ● 0.10 0.4 V IOZ Hi-Z Output Leakage D11 to D0, ADOUT, A1OUT, A2OUT, DIFFOUT VOUT = 0V to VDD, CS High ● ±10 µA COZ Hi-Z Capacitance D11 to D0, ADOUT, A1OUT, A2OUT, DIFFOUT CS High (Note 9) ● 15 pF ISOURCE Output Source Current VOUT = 0V – 20 mA ISINK Output Sink Current VOUT = VDD 30 mA 18501f 4
U W DY A IC ACCURACY (Note 5) LTC1850 LTC1851 SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio 47kHz Input Signal Unipolar, PGA = 0 61.6 71 dB Unipolar, PGA = 1 61.7 72 dB Bipolar, PGA = 0 61.6 71 dB Bipolar, PGA = 1 61.7 72 dB S/(N+D) Signal-to-(Noise + Distortion) Ratio 47kHz Input Signal Unipolar, PGA = 0 61.0 70 dB Unipolar, PGA = 1 61.0 71 dB Bipolar, PGA = 0 61.0 71 dB Bipolar, PGA = 1 61.2 72 dB THD Total Harmonic Distortion 47kHz Input Signal, Unipolar, PGA = 0 First 5 Harmonics –76 –80 dB Unipolar, PGA = 1 –78 –82 dB Bipolar, PGA = 0 –81 –87 dB Bipolar, PGA = 1 –80 –86 dB SFDR Spurious-Free Dynamic Range 47kHz Input Signal Unipolar, PGA = 0 74 82 dB Unipolar, PGA = 1 80 86 dB Bipolar, PGA = 0 84 90 dB Bipolar, PGA = 1 82 88 dB
U U U I TER AL REFERE CE TA = 25
°
C. (Notes 5, 6) PARAMETER CONDITIONS MIN TYP MAX UNITS
REFOUT Output Voltage IOUT = 0 2.48 2.50 2.52 V REFOUT Output Temperature Coefficient IOUT = 0 ±15 ppm/°C REFOUT Line Regulation 0.01 LSB/V Reference Buffer Gain VREFCOMP/VREFIN 1.636 1.638 1.640 V/V REFCOMP Output Voltage External 2.5V Reference 4.090 4.096 4.100 V Internal 2.5V Reference 4.060 4.096 4.132 V REFCOMP Impedance REFIN = VDD 6.4 kΩ
U U DIGITAL I PUTS A D DIGITAL OUTPUTS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. (Note 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIH High Level Input Voltage VDD = 5.25V ● 2.4 V VIL Low Level Input Voltage VDD = 4.75V ● 0.8 V IIN Digital Input Current VIN = 0V to VDD ● ±5 µA CIN Digital Input Capacitance 2 pF VOH High Level Output Voltage VDD = 4.75V, IO = –10µA 4.5 V VDD = 4.75V, IO = – 200µA ● 4.0 V VOL Low Level Output Voltage VDD = 4.75V, IO = 160µA 0.05 V VDD = 4.75V, IO = 1.6mA ● 0.10 0.4 V IOZ Hi-Z Output Leakage D11 to D0, ADOUT, A1OUT, A2OUT, DIFFOUT VOUT = 0V to VDD, CS High ● ±10 µA COZ Hi-Z Capacitance D11 to D0, ADOUT, A1OUT, A2OUT, DIFFOUT CS High (Note 9) ● 15 pF ISOURCE Output Source Current VOUT = 0V – 20 mA ISINK Output Sink Current VOUT = VDD 30 mA 18501f 4