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ADS8504 Datasheet(PDF) 3 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation. Click here to check the latest version.
Part No. ADS8504
Description  12-BIT 250-KSPS SAMPLING CMOS ANALOG-TO-DIGITAL CONVERTER
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Maker  BURR-BROWN [Burr-Brown (TI)]
Homepage  http://www.burr-brown.com
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ADS8504 Datasheet(HTML) 3 Page - Burr-Brown (TI)

 
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ADS8504
SLAS434 – JUNE 2005
ELECTRICAL CHARACTERISTICS (continued)
T
A = -40°C to 85°C, fs = 250 kHz, VDIG = VANA = 5 V, using internal reference (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Full-scale error(3)(4)
Ext. 2.5-V Ref.
-0.25
0.25
%FSR
Full-scale error drift
Ext. 2.5-V Ref.
±2
ppm/°C
Bipolar zero error(3)
-1
1
LSB
Bipolar zero error drift
±0.4
ppm/°C
Power supply sensitivity
-0.5
0.5
+4.75 V < VD < +5.25 V
LSB
(VDIG = VANA = VD)
AC ACCURACY
SFDR
Spurious-free dynamic range
fI = 45 kHz
86
94
dB(5)
THD
Total harmonic distortion
fI = 45 kHz
-95
-86
dB
fI = 45 kHz
72
73
dB
SINAD
Signal-to-(noise+distortion)
–60-dB Input
32
dB
SNR
Signal-to-noise ratio
fI = 45 kHz
72
73
dB
Full-power bandwidth(6)
500
kHz
SAMPLING DYNAMICS
Aperture delay
5
ns
Transient response
FS Step
2
µs
Overvoltage recovery(7)
150
ns
REFERENCE
Internal reference voltage
2.48
2.5
2.52
V
Internal reference source current (must use
1
µA
external buffer)
Internal reference drift
8
ppm/°C
External reference voltage range for specified
2.3
2.5
2.7
V
linearity
External reference current drain
Ext. 2.5-V Ref.
100
µA
DIGITAL INPUTS
Logic levels
VIL
Low-level input voltage
-0.3
0.8
V
VIH
High-level input voltage
2.0
VDIG +0.3 V
V
IIL
Low-level input current
±10
µA
IIH
High-level input current
±10
µA
DIGITAL OUTPUTS
Data format (Parallel 12-bits)
Data coding (Binary 2's complement)
VOL
Low-level output voltage
ISINK = 1.6 mA
0.4
V
VOH
High-level output voltage
ISOURCE = 500 µA
4
V
Leakage current
Hi-Z state, VOUT = 0 V to VDIG
±5
µA
Output capacitance
Hi-Z state
15
pF
DIGITAL TIMING
Bus access timing
83
ns
Bus relinquish timing
83
ns
(5)
All specifications in dB are referred to a full-scale ±10-V input.
(6)
Full-power bandwidth is defined as the full-scale input frequency at which signal-to-(noise + distortion) degrades to 60 dB, or 10 bits of
accuracy.
(7)
Recovers to specified performance after 2 x FS input overvoltage.
3


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