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ADS5204 Datasheet(PDF) 4 Page - Texas Instruments

Part No. ADS5204
Description  DUAL 10 BIT 40MSPS LOW POWER ANALOG TO DIGITAL CONVERTER WITH PGA
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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ADS5204 Datasheet(HTML) 4 Page - Texas Instruments

 
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ADS5204
SBAS268A – JUNE 2002 – REVISED JULY 2002
www.ti.com
4
DYNAMIC PERFORMANCE(1)
TA = TMIN to TMAX, AVDD = DVDD = DRVDD = 3.3V, fIN = –1dBFS, Internal Reference, fCLK = 80MHz, fS = 40MSPS, Differential Input Range =
2Vp–p, and PGA Gain = 0dB, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Effective Number of Bits
ENOB
fIN = 3.5MHz
9.7
Bits
fIN = 10.5MHz
9.3
9.7
Bits
fIN = 20MHz
9.6
Bits
Total Harmonic Distortion
THD
fIN = 3.5MHz
–71
dB
fIN = 10.5MHz
–71
–66
dB
fIN = 20MHz
–68
dB
Signal-to-Noise Ratio
SNR
fIN = 3.5MHz
60.5
dB
g
fIN = 10.5MHz
60.5
dB
fIN = 20MHz
60
dB
Signal-to-Noise Ratio + Distortion
SINAD
fIN = 3.5MHz
60
dB
g
fIN = 10.5MHz
57
60
dB
fIN = 20MHz
60
dB
Spurious-Free Dynamic Range
SFDR
fIN = 3.5MHz
75
dB
yg
fIN = 10.5MHz
69
73
dB
fIN = 20MHz
70.5
dB
Analog Input Bandwidth
See Note (2)
300
MHz
2-Tone Intermodulation Distortion
IMD
f1 = 9.5MHz, f2 = 9.9MHz
–68
dBc
A/B Channel Crosstalk
–75
dBc
A/B Channel Offset Mismatch
0.016
1.75
% of FS
A/B Channel Full-Scale Error Mismatch
0.025
1.0
% of FS
(1) These specifications refer to a 25
Ω series resistor and 15pF differential capacitor between A/B+ and A/B– inputs; any source impedance will
bring the bandwidth down.
(2) Analog input bandwidth is defined as the frequency at which the sampled input signal is 3dB down on unity gain and is limited by the input switch
impedance.
PGA SPECIFICATIONS
PARAMETER
MIN
TYP
MAX
UNIT
Gain Range
0 to 18
dB
Gain Step Size(1)
0.5826
dB
Gain Error(2)
–0.15
±0.025
+0.15
dB
Control Bits Per Channel
5
Bits
(1) Refer to Table 2, PGA Gain Code. Ideal step size: 18.0618dB/31 = 0.5826dB
(2) Deviation from ideal. Refer to Table 2, all gain settings.


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