ADC08D1020_09 Datasheet, PDF (10/44 Pages) National Semiconductor (TI) – Low Power, 8-Bit, Dual 1.0 GSPS or Single 2.0 GSPS A/D Converter

Symbol
Parameter
Conditions
Typical
(Note 8)
Limits
(Note 8)
SNR
Signal-to-Noise Ratio
f_IN = 248 MHz, V_IN = FSR − 0.5 dB
f_IN = 498 MHz, V_IN = FSR − 0.5 dB
46.8
46.8
THD
Total Harmonic Distortion
f_IN = 248 MHz, V_IN = FSR − 0.5 dB
−58
f_IN = 498 MHz, V_IN = FSR − 0.5 dB
−58
2nd Harm Second Harmonic Distortion ^{fIN = 248 MHz, VIN = FSR − 0.5 dB}
−63
f_IN = 498 MHz, V_IN = FSR − 0.5 dB
−63
3rd Harm Third Harmonic Distortion
f_IN = 248 MHz, V_IN = FSR − 0.5 dB
−65
f_IN = 498 MHz, V_IN = FSR − 0.5 dB
−65
SFDR
Spurious-Free dynamic Range ^{fIN = 248 MHz, VIN = FSR − 0.5 dB}
58
f_IN = 498 MHz, V_IN = FSR − 0.5 dB
58
IMD
Intermodulation Distortion
f_IN1 = 250 MHz, V_IN = FSR − 7 dB
-50
f_IN2 = 260 MHz, V_IN = FSR − 7 dB
Out of Range Output Code ^(VIN^{+) − (V}IN^{−) > + Full Scale}
(In addition to OR Output high) (V_IN+) − (V_IN−) < − Full Scale
NORMAL MODE (Non DES) DYNAMIC CONVERTER CHARACTERISTICS, 1:1 DEMUX MODE
45.1
45.1
-50
-50
50
50
255
0
ENOB
Effective Number of Bits
f_IN = 248 MHz, V_IN = FSR − 0.5 dB
7.3
f_IN = 498 MHz, V_IN = FSR − 0.5 dB
7.3
SINAD
Signal-to-Noise Plus Distortion ^f_IN ^{= 248 MHz, V}_IN ^{= FSR − 0.5 dB}
Ratio
f_IN = 498 MHz, V_IN = FSR − 0.5 dB
45.7
45.7
SNR
Signal-to-Noise Ratio
f_IN = 248 MHz, V_IN = FSR − 0.5 dB
46
f_IN = 498 MHz, V_IN = FSR − 0.5 dB
46
THD
Total Harmonic Distortion
f_IN = 248 MHz, V_IN = FSR − 0.5 dB
-57
f_IN = 498 MHz, V_IN = FSR − 0.5 dB
-57
2nd Harm Second Harmonic Distortion ^{fIN = 248 MHz, VIN = FSR − 0.5 dB}
-63
f_IN = 498 MHz, V_IN = FSR − 0.5 dB
-63
3rd Harm Third Harmonic Distortion
f_IN = 248 MHz, V_IN = FSR − 0.5 dB
-64
f_IN = 498 MHz, V_IN = FSR − 0.5 dB
-64
SFDR
Spurious-Free dynamic Range ^{fIN = 248 MHz, VIN = FSR − 0.5 dB}
57
f_IN = 498 MHz, V_IN = FSR − 0.5 dB
57
INTERLEAVE MODE (DES Pin 127=Float) - DYNAMIC CONVERTER CHARACTERISTICS, 1:4 DEMUX MODE
FPBW
Full Power Bandwidth
Dual Edge Sampling Mode
1.3
ENOB
SINAD
Effective Number of Bits
f_IN = 498 MHz, V_IN = FSR − 0.5 dB
Signal to Noise Plus Distortion
Ratio
f_IN = 498 MHz, V_IN = FSR − 0.5 dB
7.3
6.7
46
42.1
SNR
Signal to Noise Ratio
f_IN = 498 MHz, V_IN = FSR − 0.5 dB
THD
Total Harmonic Distortion
f_IN = 498 MHz, V_IN = FSR − 0.5 dB
2nd Harm Second Harmonic Distortion f_IN = 498 MHz, V_IN = FSR − 0.5 dB
3rd Harm Third Harmonic Distortion
f_IN = 498 MHz, V_IN = FSR − 0.5 dB
SFDR
Spurious Free Dynamic Range f_IN = 498 MHz, V_IN = FSR − 0.5 dB
ANALOG INPUT AND REFERENCE CHARACTERISTICS
46.3
43.8
−58
-47
−58
−66
57
47
FSR pin 14 Low
V_IN
Full Scale Analog Differential
Input Range
FSR pin 14 High
580
650
720
800
870
940
V_CMI
Common Mode Input Voltage
V_CMO
V_CMO − 0.05
V_CMO + 0.05
Units
(Limits)
dB (min)
dB (min)
dB (max)
dB (max)
dB
dB
dB
dB
dB (min)
dB (min)
dB
Bits
Bits
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
GHz
Bits (min)
dB
dB (min)
dB (max)
dB
dB
dB (min)
mV_P-P (min)
mV_P-P (max)
mV_P-P (min)
mV_P-P (max)
V (min)
V (max)
www.national.com
10