ADS7831 Burr-Brown Corporation, ADS7831 Datasheet - Page 2

• Manufacturer Part Number: ADS7831
• Description: 12-Bit 600kHz Sampling CMOS ANALOG-to-DIGITAL CONVERTER
• Manufacturer: Burr-Brown Corporation

SPECIFICATIONS
At T
NOTES: (1) LSB means Least Significant Bit. For the 12-bit, 2.5V input ADS7831, one LSB is 1.22mV. (2) Measured with 50 in series with analog input. Adjustable
to zero with external potentiometers. (3) Total unadjusted error is the worst case of –Full Scale or +Full Scale untrimmed deviation from ideal first and last code
transitions and includes the effect of offset error. (4) All specifications in dB are referred to a full-scale 2.5V input. (5) Usable Bandwidth defined as Full-Scale input
frequency at which Signal-to-(Noise+Distortion) degrades to 60dB, or 10 bits of accuracy. 6) Recovers to specified performance after 2 x FS input over voltage.
PARAMETER
RESOLUTION
ANALOG INPUT
Voltage Range
Impedance
Capacitance
THROUGHPUT SPEED
Conversion Time
Complete Cycle
Throughput Rate
DC ACCURACY
Integral Linearity Error
Differential Linearity Error
No Missing Codes
Total Unadjusted Error
Power Supply Sensitivity
AC ACCURACY
Spurious-Free Dynamic Range
Total Harmonic Distortion
Signal-to-(Noise+Distortion)
Signal-to-Noise
Usable Bandwidth
Full-Power Bandwidth
SAMPLING DYNAMICS
Aperture Delay
Aperture Jitter
Transient Response
Overvoltage Recovery
REFERENCE
Reference Voltage
Reference DC Source Current
DIGITAL INPUTS
Logic Levels
DIGITAL OUTPUTS
Data Format
Data Coding
Leakage Current
Output Capacitance
DIGITAL TIMING
Bus Access Time
Bus Relinquish Time
POWER SUPPLIES
Specified Performance
Power Dissipation
TEMPERATURE RANGE
Specified Performance
Storage
Thermal Resistance (
A
(Includes Bipolar Zero Error and Full Scale Error)
(+V
(External load should be static)
V
V
I
I
V
V
+V
–V
+I
+I
–I
Plastic DIP
SOIC
IL
IH
= –40 C to +85 C, f
IL
IH
OL
OH
DIG
ANA
ANA
DIG
ANA
DIG
= +V
= +V
ANA
ANA
®
= V
(5)
D
ADS7831
)
S
(6)
= 600kHz, +V
(2, 3)
JA
)
DIG
= +V
ANA
= +5V, –V
–5.25V < –V
ANA
+4.75V < V
Acquire & Convert
V
= –5V, using internal reference and the 50 input resistor shown in Figure 4b, unless otherwise specified.
I
CONDITIONS
SOURCE
OUT
I
High-Z State,
High-Z State
f
f
f
f
f
SINK
IN
IN
IN
IN
S
V
FS Step
V
= 250kHz
= 250kHz
= 250kHz
= 250kHz
= 0V to V
= 600kHz
IL
IH
= 1.6mA
= 500 A
= 0V
= 5V
ANA
D
< +5.25V
< –4.75V
DIG
2
+4.75
–5.25
2.45
–0.3
+2.4
+2.8
MIN
600
–40
–65
77
69
69
Binary Two's Complement
Parallel 12-bits
ADS7831P, U
Guaranteed
TYP
–85
200
250
100
+16
+16
–12
220
3.1
1.3
1.6
2.5
+5
87
71
72
15
20
10
–5
75
75
2.5
5
V
D
+5.25
–4.75
MAX
+150
1.66
2.55
+0.8
+0.4
+85
–77
275
12
15
62
83
+ 0.3
10
10
10
1
1
5
5
UNITS
LSB
dB
MHz
MHz
LSB
LSB
LSB
mW
Bits
kHz
mA
mA
mA
C/W
C/W
k
dB
dB
dB
pF
ns
ps
ns
ns
pF
ns
ns
V
V
V
V
V
V
V
V
C
C
A
A
A
A
s
s
(4)
(1)