Datasheet LTC2308 (Analog Devices) - 3

LTC2308
CONVERTER AND MULTIPLEXER CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Notes 4, 5) PARAMETER CONDITIONS MIN TYP MAX UNITS
Bipolar Full-Scale Error External Reference (Note 8) l ±1 ±9 LSB Bipolar Full-Scale Error Drift External Reference 0.05 LSB/°C Bipolar Full-Scale Error Match l ±0.5 ±3 LSB Unipolar Full-Scale Error External Reference (Note 8) l ±1.5 ±8 LSB Unipolar Full-Scale Error Drift External Reference 0.05 LSB/°C Unipolar Full-Scale Error Match l ±0.4 ±3 LSB
ANALOG INPUT The
l
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 Absolute Input Range (CH0 to CH7) (Note 9) l –0.05 REFCOMP V V – IN Absolute Input Range (CH0 to CH7, Unipolar (Note 9) l –0.05 0.25 • REFCOMP V COM) Bipolar (Note 9) l –0.05 0.75 • REFCOMP V V + – + – IN – VIN Input Differential Voltage Range VIN = VIN – VIN (Unipolar) l 0 to REFCOMP V V + – IN = VIN – VIN (Bipolar) l ±REFCOMP/2 V IIN Analog Input Leakage Current l ±1 µA CIN Analog Input Capacitance Sample Mode 55 pF Hold Mode 5 pF CMRR Input Common Mode Rejection Ratio 70 dB
DYNAMIC ACCURACY The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C and AIN = –1dBFS. (Notes 4, 10) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SINAD Signal-to-(Noise + Distortion) Ratio fIN = 1kHz l 71 73.3 dB SNR Signal-to-Noise Ratio fIN = 1kHz l 71 73.4 dB THD Total Harmonic Distortion fIN = 1kHz, First 5 Harmonics l –90 –78 dB SFDR Spurious Free Dynamic Range fIN = 1kHz l 80 90 dB Channel-to-Channel Isolation fIN = 1kHz –109 dB Full Linear Bandwidth (Note 11) 700 kHz –3dB Input Linear Bandwidth 25 MHz Aperture Delay 13 ns Transient Reponse Full-Scale Step 240 ns 2308fc For more information www.linear.com/LTC2308 3