Datasheet LTC2242-12 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 12-Bit, 250Msps ADC |
| 页数 / 页 | 30 / 3 — CONVERTER CHARACTERISTICS The. denotes the specifi cations which apply … |
| 文件格式/大小 | PDF / 486 Kb |
| 文件语言 | 英语 |
CONVERTER CHARACTERISTICS The. denotes the specifi cations which apply over the full operating
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LTC2242-12
CONVERTER CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. (Note 4) PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution (No Missing Codes) ● 12 Bits Integral Linearity Error Differential Analog Input (Note 5) ● –2.7 ±1 2.7 LSB Differential Linearity Error Differential Analog Input ● –1 ±0.4 1 LSB Offset Error (Note 6) ● –17 ±5 17 mV Gain Error External Reference ● –3.2 ±0.7 3.2 %FS Offset Drift ±10 μV/C Full-Scale Drift Internal Reference ±60 ppm/C External Reference ±45 ppm/C Transition Noise SENSE = 1V 0.74 LSBRMS
ANALOG INPUT The
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V + – IN Analog Input Range (AIN – AIN ) 2.375V < VDD < 2.625V (Note 7) ● ±0.5 to ±1 V V + – IN, CM Analog Input Common Mode (AIN + AIN )/2 Differential Input (Note 7) ● 1.2 1.25 1.3 V I + – IN Analog Input Leakage Current 0 < AIN , AIN < VDD ● –1 1 μA ISENSE SENSE Input Leakage 0V < SENSE < 1V ● –1 1 μA IMODE MODE Pin Pull-Down Current to GND 7 μA ILVDS LVDS Pin Pull-Down Current to GND 7 μA tAP Sample and Hold Acquisition Delay Time 0.4 ns tJITTER Sample and Hold Acquisition Delay Time Jitter 95 fsRMS Full Power Bandwidth Figure 8 Test Circuit 1200 MHz
DYNAMIC ACCURACY The
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. AIN = –1dBFS. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio (Note 10) 10MHz Input 65.4 dB 70MHz Input l 63.4 65.3 dB 140MHz Input 65.3 dB 240MHz Input 65.1 dB SFDR Spurious Free Dynamic Range 10MHz Input 78 dB 2nd or 3rd Harmonic 70MHz Input l 65 75 dB (Note 11) 140MHz Input 74 dB 240MHz Input 73 dB Spurious Free Dynamic Range 10MHz Input 87 dB 4th Harmonic or Higher 70MHz Input l 73 87 dB (Note 11) 140MHz Input 87 dB 240MHz Input 87 dB S/(N+D) Signal-to-Noise Plus 10MHz Input 65.3 dB Distortion Ratio 70MHz Input l 61.8 65.1 dB (Note 12) 140MHz Input 64.8 dB 240MHz Input 64.5 dB IMD Intermodulation Distortion fIN1 = 135MHz, fIN2 = 140MHz 81 dBc 224212fc 3 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION CONVERTER CHARACTERISTICS ANALOG INPUT DYNAMIC ACCURACY INTERNAL REFERENCE CHARACTERISTICS DIGITAL INPUTS AND DIGITAL OUTPUTS POWER REQUIREMENTS TIMING CHARACTERISTICS ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS FUNCTIONAL BLOCK DIAGRAM TIMING DIAGRAMS APPLICATIONS INFORMATION PACKAGE DESCRIPTION REVISION HISTORY RELATED PARTS
CONVERTER CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. (Note 4) PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution (No Missing Codes) ● 12 Bits Integral Linearity Error Differential Analog Input (Note 5) ● –2.7 ±1 2.7 LSB Differential Linearity Error Differential Analog Input ● –1 ±0.4 1 LSB Offset Error (Note 6) ● –17 ±5 17 mV Gain Error External Reference ● –3.2 ±0.7 3.2 %FS Offset Drift ±10 μV/C Full-Scale Drift Internal Reference ±60 ppm/C External Reference ±45 ppm/C Transition Noise SENSE = 1V 0.74 LSBRMS
ANALOG INPUT The
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V + – IN Analog Input Range (AIN – AIN ) 2.375V < VDD < 2.625V (Note 7) ● ±0.5 to ±1 V V + – IN, CM Analog Input Common Mode (AIN + AIN )/2 Differential Input (Note 7) ● 1.2 1.25 1.3 V I + – IN Analog Input Leakage Current 0 < AIN , AIN < VDD ● –1 1 μA ISENSE SENSE Input Leakage 0V < SENSE < 1V ● –1 1 μA IMODE MODE Pin Pull-Down Current to GND 7 μA ILVDS LVDS Pin Pull-Down Current to GND 7 μA tAP Sample and Hold Acquisition Delay Time 0.4 ns tJITTER Sample and Hold Acquisition Delay Time Jitter 95 fsRMS Full Power Bandwidth Figure 8 Test Circuit 1200 MHz
DYNAMIC ACCURACY The
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. AIN = –1dBFS. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio (Note 10) 10MHz Input 65.4 dB 70MHz Input l 63.4 65.3 dB 140MHz Input 65.3 dB 240MHz Input 65.1 dB SFDR Spurious Free Dynamic Range 10MHz Input 78 dB 2nd or 3rd Harmonic 70MHz Input l 65 75 dB (Note 11) 140MHz Input 74 dB 240MHz Input 73 dB Spurious Free Dynamic Range 10MHz Input 87 dB 4th Harmonic or Higher 70MHz Input l 73 87 dB (Note 11) 140MHz Input 87 dB 240MHz Input 87 dB S/(N+D) Signal-to-Noise Plus 10MHz Input 65.3 dB Distortion Ratio 70MHz Input l 61.8 65.1 dB (Note 12) 140MHz Input 64.8 dB 240MHz Input 64.5 dB IMD Intermodulation Distortion fIN1 = 135MHz, fIN2 = 140MHz 81 dBc 224212fc 3 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION CONVERTER CHARACTERISTICS ANALOG INPUT DYNAMIC ACCURACY INTERNAL REFERENCE CHARACTERISTICS DIGITAL INPUTS AND DIGITAL OUTPUTS POWER REQUIREMENTS TIMING CHARACTERISTICS ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS FUNCTIONAL BLOCK DIAGRAM TIMING DIAGRAMS APPLICATIONS INFORMATION PACKAGE DESCRIPTION REVISION HISTORY RELATED PARTS