SPECIFICATIONS
ELECTRICAL
At TA = –40°C to +85°C, fS = 40kHz, VS1 = VS2 = VS = +5V ±5%, using external reference, CONTC = 0V, unless otherwise specified.
ADS7825P, U
TYP
ADS7825PB, UB
PARAMETER
RESOLUTION
CONDITIONS
MIN
MAX
MIN
TYP
MAX
UNITS
(1)
16
✻
Bits
ANALOG INPUT
Voltage Range
Impedance
±10V
45.7
35
✻
✻
✻
V
kΩ
pF
Channel On or Off
Capacitance
THROUGHPUT SPEED
Conversion Time
Acquisition Time
Multiplexer Settling Time
Complete Cycle (Acquire and Convert)
Complete Cycle (Acquire and Convert)
Throughput Rate
20
5
5
✻
✻
✻
µs
µs
µs
µs
µs
Includes Acquisition
CONTC = +5V
25
40
✻
✻
40
15
✻
kHz
DC ACCURACY
Integral Linearity Error
No Missing Codes
Transition Noise(3)
Full Scale Error(4)
Full Scale Error Drift
Full Scale Error(4)
Full Scale Error Drift
Bipolar Zero Error
±3
±2
LSB(2)
16
0.8
±7
±2
±2
✻
±5
✻
LSB
%
ppm/°C
%
ppm/°C
mV
ppm/°C
%
Internal Reference
Internal Reference
±0.5
±0.5
±10
±0.25
±0.25
✻
Bipolar Zero Error Drift
Channel-to-Channel Mismatch
Power Supply Sensitivity
✻
±0.1
±8
±0.1
✻
+4.75 < VS < +5.25
fIN = 1kHz
LSB
AC ACCURACY
Spurious-Free Dynamic Range(5)
Total Harmonic Distortion
Signal-to-(Noise+Distortion)
Signal-to-Noise
90
✻
dB
dB
dB
dB
dB
f
IN = 1kHz
IN = 1kHz
IN = 1kHz
fIN = 1kHz
–90
✻
f
f
83
83
100
86
86
✻
Channel Separation(6)
–3dB Bandwidth
Useable Bandwidth(7)
120
2
90
✻
✻
✻
MHz
kHz
SAMPLING DYNAMICS
Aperture Delay
Transient Response(8)
Overvoltage Recovery(9)
40
5
1
✻
✻
✻
ns
µs
µs
FS Step
REFERENCE
Internal Reference Voltage
Internal Reference Source Current
(Must use external buffer)
External Reference Voltage Range
for Specified Linearity
2.48
2.3
2.5
1
2.52
✻
✻
✻
✻
✻
V
µA
2.5
2.7
✻
✻
✻
V
External Reference Current Drain
VREF = +2.5V
100
µA
DIGITAL INPUTS
Logic Levels
VIL
VIH
IIL
–0.3
+2.4
+0.8
VS +0.3V
±10
✻
✻
✻
✻
✻
✻
V
V
µA
µA
IIH
±10
DIGITAL OUTPUTS
Data Format
Data Coding
VOL
Parallel in two bytes; Serial
Binary Two's Complement
✻
✻
ISINK = 1.6mA
ISOURCE = 500µA
High-Z State, VOUT = 0V to VS
High-Z State
+0.4
✻
V
V
µA
pF
VOH
+4
±5
15
✻
Leakage Current
Output Capacitance
✻
✻
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.
®
ADS7825
2
BB [ BURR-BROWN CORPORATION ]
