SPECIFICATIONS
At TA = –40°C to +85°C, fS = 40kHz, VS = +5V ±5%, using internal reference, unless otherwise specified.
ADS7812P, U
ADS7812PB, UB
TYP
PARAMETER
RESOLUTION
CONDITIONS
MIN
TYP
MAX
MIN
MAX
UNITS
12
✻
Bits
ANALOG INPUT
Voltage Range
Impedance
See Table I
See Table I
35
✻
✻
✻
Capacitance
pF
THROUGHPUT SPEED
Conversion Time
Complete Cycle
20
25
✻
✻
µs
µs
Acquire and Convert
Throughput Rate
40
✻
kHz
DC ACCURACY
Integral Linearity Error
Differential Linearity Error
No Missing Codes
Transition Noise(2)
Full Scale Error(3)
Full Scale Error Drift
Full Scale Error(3)
Full Scale Error Drift
Bipolar Zero Error
Bipolar Zero Error Drift
Unipolar Zero Error
Unipolar Zero Error Drift
Recovery Time to Rated Accuracy
from Power Down(4)
Power Supply Sensitivity
0.1
0.1
Guaranteed
0.05
±1
±1
✻
✻
✻
✻
±0.5
±0.5
LSB(1)
LSB
LSB
%
ppm/°C
%
ppm/°C
mV
ppm/°C
mV
±0.5
±0.5
±10
±6
±0.25
±0.25
✻
±14
±5
✻
✻
✻
Ext. 2.5000V Ref
Ext. 2.5000V Ref
Bipolar Ranges
Bipolar Ranges
±3
Unipolar Ranges
Unipolar Ranges
1.0µF Capacitor to CAP
✻
±3
300
✻
✻
ppm/°C
µs
+4.75V < (VS = +5V) < +5.25
±0.75
✻
✻
LSB
AC ACCURACY
Spurious-Free Dynamic Range
Total Harmonic Distortion
Signal-to-(Noise+Distortion)
Signal-to-Noise
Useable Bandwidth(6)
Full Power –3dB Bandwidth
f
IN = 1kHz
fIN = 1kHz
IN = 1kHz
IN = 1kHz
80
98
–96
74
74
130
600
✻
✻
✻
✻
✻
✻
✻
dB(5)
dB
dB
dB
kHz
kHz
–80
f
f
70
70
72
72
SAMPLING DYNAMICS
Aperture Delay
Aperture Jitter
Transient Response
Overvoltage Recovery(7)
40
20
5
✻
✻
✻
✻
ns
ps
µs
ns
FS Step
750
REFERENCE
Internal Reference Voltage
Internal Reference Source Current
Internal Reference Drift
External Reference Voltage Range
External Reference Current Drain
2.48
2.3
2.5
100
8
2.52
✻
✻
✻
✻
✻
✻
✻
V
µA
ppm/°C
V
2.5
2.7
100
✻
✻
V
REF = +2.5V
µA
DIGITAL INPUTS
Logic Levels
VIL
VIH
IIL
–0.3
+2.0
+0.8
VS +0.3V
±10
✻
✻
✻
✻
✻
✻
V
V
µA
µA
IIH
±10
DIGITAL OUTPUTS
Data Format
Data Coding
VOL
Serial
Binary Two’s Complement
ISINK = 1.6mA
ISOURCE = 500µA
High-Z State,
+0.4
✻
✻
V
V
µA
VOH
+4
✻
Leakage Current
±1
V
OUT = 0V to VS
High-Z State
Output Capacitance
15
15
pF
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN
assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject
to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not
authorize or warrant any BURR-BROWN product for use in life support devices and/or systems.
®
ADS7812
2
BB [ BURR-BROWN CORPORATION ]
