SBAS469B
–
MARCH 2009
–
REVISED SEPTEMBER 2011
ELECTRICAL CHARACTERISTICS
V
CC
= 5 V, V
REF
= 5 V, f
SAMPLE
= 200 kHz, f
CLK
= 16
×
f
SAMPLE
= 3.2 MHz, over operating temperature
–40°C
to 125°C (unless
otherwise noted)
PARAMETER
Analog Input
C
I
I
leak
Input capacitance
Leakage current
Resolution
No missing codes
INL
DNL
Integral linearity error
Differential linearity error
Offset error
Offset error match
Gain error
Gain error match
V
n
PSRR
Noise
Power-supply ripple rejection
0.1
30
70
0.15
±0.8
±3
1
±4
1
ADS7841EIDBQRQ1
ADS7841ESQDBQRQ1
12
11
±2
12
25
200
pF
nA
bits
bits
LSB
(
1)
TEST CONDITIONS
MIN
TYP
MAX UNIT
System Performance
LSB
LSB
LSB
LSB
LSB
μV
rm
s
dB
CLK
12 cycle
s
Sampling Dynamics
t
conv
Conversion time
t
acq
Acquisition time
Throughput rate
3
200
500
30
100
V
IN
= 5 V
p-p
at 10 kHz
V
IN
= 5 V
p-p
at 10 kHz
V
IN
= 5 V
p-p
at 10 kHz
V
IN
= 5 V
p-p
at 50 kHz
DCLK static
f
SAMPLE
= 12.5 kHz
DCLK static
68
72
–78
71
79
120
5
40
100
2.5
0.001
3.5
0.4
550
900
3
–72
CLK
cycle
s
kHz
ns
ns
ps
dB
dB
dB
dB
GΩ
μA
t
settle
t
d
t
jitter
THD
SINAD
Multiplexer settling time
Aperture delay
Aperture jitter
Total harmonic distortion
(2)
Signal to noise + distortion ratio
Spurious-free dynamic range
Channel-to-channel isolation
Dynamic Characteristics
Reference Input
R
I
I
I
Resistance
Input current
Digital Input/Output
V
OH
V
OL
High-level output voltage
Low-level output voltage
I
OH
=
–250 μA
I
OL
= 250
μA
V
V
Power Supply
I
Q
Quiescent current
f
SAMPLE
= 12.5 kHz
Power-down mode
(1)
(2)
(3)
4
LSB = least significant bit. With V
REF
= 5 V, one LSB is 1.22 mV.
First five harmonics of the test frequency
Auto power-down mode (PD1 = PD0 = 0) active or SHDN = GND
Product Folder Link(s):
Copyright
©
2009–2011, Texas Instruments Incorporated
(3)
300
, CS = V
CC
3
μA
TI [ TEXAS INSTRUMENTS ]
