编辑: 鱼饵虫 2019-07-02

AIN +, AIN C <

VDD, No Encode l C1

1 ?A IIN2 PAR/SER Input Leakage Current

0 <

PAR/SER <

VDD l C3

3 ?A IIN3 SENSE Input Leakage Current 0.625 <

SENSE <

1.3V l C6

6 ?A tAP Sample-and-Hold Acquisition Delay Time

0 ns tJITTER Sample-and-Hold Acquisition Delay Jitter 0.17 psRMS CMRR Analog Input Common Mode Rejection Ratio

80 dB BW-3B Full-Power Bandwidth Figure

6 Test Circuit

800 MHz Dynamic Accuracy The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. AIN = C1dBFS. (Note 5) SYMBOL PARAMETER CONDITIONS LTC2261-14 LTC2260-14 LTC2259-14 UNITS MIN TYP MAX MIN TYP MAX MIN TYP MAX SNR Signal-to-Noise Ratio 5MHz Input 70MHz Input 140MHz Input l 71.3 73.4 73.2 72.7 71.3 73.4 73.2 72.7 70.9 73.1 72.9 72.4 dB dB dB SFDR Spurious Free Dynamic Range 2nd or 3rd Harmonic 5MHz Input 70MHz Input 140MHz Input l

76 88

85 82

76 88

85 82

79 88

85 82 dB dB dB Spurious Free Dynamic Range 4th Harmonic or Higher 5MHz Input 70MHz Input 140MHz Input l

85 90

90 90

83 90

90 90

85 90

90 90 dB dB dB S/(N+D) Signal-to-Noise Plus Distortion Ratio 5MHz Input 70MHz Input 140MHz Input l 70.2

73 72.6

72 70.2

73 72.6

72 70.4 72.9 72.6

72 dB dB dB Internal Reference Characteristics The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) PARAMETER CONDITIONS MIN TYP MAX UNITS VCM Output Voltage IOUT =

0 0.5 ? VDD C 25mV 0.5 ? VDD 0.5 ? VDD + 25mV V VCM Output Temperature Drift ±25 ppm/°C VCM Output Resistance C600?A <

IOUT <

1mA

4 Ω VREF Output Voltage IOUT =

0 1.225 1.250 1.275 V VREF Output Temperature Drift ±25 ppm/°C VREF Output Resistance C400?A <

IOUT <

1mA

7 Ω VREF Line Regulat........

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