Datasheet LTC2249 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 14-Bit, 80Msps Low Power 3V ADC |
| 页数 / 页 | 24 / 3 — A ALOG I PUT The. denotes the specifications which apply over the full … |
| 文件格式/大小 | PDF / 565 Kb |
| 文件语言 | 英语 |
A ALOG I PUT The. denotes the specifications which apply over the full operating temperature range, otherwise
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文件文字版本
LTC2249
U U A ALOG I PUT The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V + – IN Analog Input Range (AIN – AIN ) 2.7V < VDD < 3.4V (Note 7) ● ±0.5 to ±1 V V + – IN,CM Analog Input Common Mode (AIN + AIN )/2 Differential Input (Note 7) ● 1 1.5 1.9 V Single Ended Input (Note 7) ● 0.5 1.5 2 V I + – IN Analog Input Leakage Current 0V < AIN , AIN < VDD ● –1 1 µA ISENSE SENSE Input Leakage 0V < SENSE < 1V ● –3 3 µA IMODE MODE Pin Leakage ● –3 3 µA tAP Sample-and-Hold Acquisition Delay Time 0 ns tJITTER Sample-and-Hold Acquisition Delay Time Jitter 0.2 psRMS CMRR Analog Input Common Mode Rejection Ratio 80 dB
U W DY A IC ACCURACY The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. AIN = –1dBFS. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio 5MHz Input 73 dB 40MHz Input ● 70.8 73 dB 70MHz Input 73 dB 140MHz Input 72.6 dB SFDR Spurious Free Dynamic Range 5MHz Input 90 dB 2nd or 3rd Harmonic 40MHz Input ● 75 90 dB 70MHz Input 90 dB 140MHz Input 85 dB SFDR Spurious Free Dynamic Range 5MHz Input 95 dB 4th Harmonic or Higher 40MHz Input ● 81 95 dB 70MHz Input 95 dB 140MHz Input 90 dB S/(N+D) Signal-to-Noise Plus Distortion Ratio 5MHz Input 72.9 dB 40MHz Input ● 70.2 72.8 dB 70MHz Input 72.8 dB 140MHz Input 72.1 dB IMD Intermodulation Distortion fIN1 = 28.2MHz, fIN2 = 26.8MHz 90 dB Full Power Bandwidth Figure 8 Test Circuit 575 MHz
U U U I TER AL REFERE CE CHARACTERISTICS (Note 4) PARAMETER CONDITIONS MIN TYP MAX UNITS
VCM Output Voltage IOUT = 0 1.475 1.500 1.525 V VCM Output Tempco ±25 ppm/°C VCM Line Regulation 2.7V < VDD < 3.4V 3 mV/V VCM Output Resistance –1mA < IOUT < 1mA 4 Ω 2249fa 3
U U A ALOG I PUT The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V + – IN Analog Input Range (AIN – AIN ) 2.7V < VDD < 3.4V (Note 7) ● ±0.5 to ±1 V V + – IN,CM Analog Input Common Mode (AIN + AIN )/2 Differential Input (Note 7) ● 1 1.5 1.9 V Single Ended Input (Note 7) ● 0.5 1.5 2 V I + – IN Analog Input Leakage Current 0V < AIN , AIN < VDD ● –1 1 µA ISENSE SENSE Input Leakage 0V < SENSE < 1V ● –3 3 µA IMODE MODE Pin Leakage ● –3 3 µA tAP Sample-and-Hold Acquisition Delay Time 0 ns tJITTER Sample-and-Hold Acquisition Delay Time Jitter 0.2 psRMS CMRR Analog Input Common Mode Rejection Ratio 80 dB
U W DY A IC ACCURACY The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. AIN = –1dBFS. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio 5MHz Input 73 dB 40MHz Input ● 70.8 73 dB 70MHz Input 73 dB 140MHz Input 72.6 dB SFDR Spurious Free Dynamic Range 5MHz Input 90 dB 2nd or 3rd Harmonic 40MHz Input ● 75 90 dB 70MHz Input 90 dB 140MHz Input 85 dB SFDR Spurious Free Dynamic Range 5MHz Input 95 dB 4th Harmonic or Higher 40MHz Input ● 81 95 dB 70MHz Input 95 dB 140MHz Input 90 dB S/(N+D) Signal-to-Noise Plus Distortion Ratio 5MHz Input 72.9 dB 40MHz Input ● 70.2 72.8 dB 70MHz Input 72.8 dB 140MHz Input 72.1 dB IMD Intermodulation Distortion fIN1 = 28.2MHz, fIN2 = 26.8MHz 90 dB Full Power Bandwidth Figure 8 Test Circuit 575 MHz
U U U I TER AL REFERE CE CHARACTERISTICS (Note 4) PARAMETER CONDITIONS MIN TYP MAX UNITS
VCM Output Voltage IOUT = 0 1.475 1.500 1.525 V VCM Output Tempco ±25 ppm/°C VCM Line Regulation 2.7V < VDD < 3.4V 3 mV/V VCM Output Resistance –1mA < IOUT < 1mA 4 Ω 2249fa 3