SPECIFICATIONS
ELECTRICAL
VA = VD = VREF+ = 5V ±5%; VREF– = AGND = DGND = 0V; CLK = 2MHz external, TA = –40°C to +85°C, after calibration at any temperature, unless otherwise specified.
ADS7803BP/ADS7803BN
PARAMETER
RESOLUTION
CONDITIONS
MIN
TYP
MAX
UNITS
12
Bits
ANALOG INPUT
Voltage Input Range
Input Capacitance
On State Bias Current
Off State Bias Current
V
REF+ = 5V, VREF– = 0V
0
5
V
50
100
pF
nA
nA
nA
kΩ
MΩ
dB
T
A = +25°C
10
100
T
A = –40°C to +85°C
On Resistance Multiplexer
Off Resistance Multiplexer
Channel Separation
2
10
92
500Hz
REFERENCE INPUT
For Specified Performance: VREF
VREF
+
–
VREF+ ≤ VA
5
0
V
V
For Derated Performance(1): VREF
VREF
+
–
4.5
0
VA
1
V
V
Input Reference Current
V
REF+ = 5V, VREF– = 0V
10
100
µA
THROUGHPUT TIMING
Conversion Time With External Clock (Including
Multiplexer Settling Time and Acquisition Time)
CLK = 2MHz
CLK = 1MHz
CLK = 500kHz
TA = +25°C
A = –40°C to +85°C
8.5
17
34
10
µs
µs
µs
µs
µs
ns
ns
With Internal Clock Using Recommended
Clock Components
Multiplexer Settling Time to 0.01%
Multiplexer Access Time
T
10
460
20
DC ACCURACY
Total Error, All Channels(2)
Differential Nonlinearity
No Missing Codes
Gain Error
Gain Error Drift
Offset Error
Offset Error Drift
Channel-to-Channel Mismatch
Power Supply Sensitivity
±1/2
±1/4
Guaranteed
±1/8
±3/4
±1/2
LSB
LSB
All Channels
Between Calibration Cycles
All Channels
±1/4
±1/4
±1/4
LSB
ppm/°C
LSB
ppm/°C
LSB
±0.2
±1/8
±0.2
Between Calibration Cycles
V
A = VD = 4.75V to 5.25V
±1/8
LSB
AC ACCURACY
Signal-to-(Noise + Distortion) Ratio
fIN = 1kHz
69
66
71
69
–75
70
90
82
dB
dB
dB
dB
dB
dB
f
f
f
IN = 50kHz
IN = 50kHz
IN = 50kHz
Total Harmonic Distortion
Signal-to-Noise Ratio
Spurious Free Dynamic Range
fIN = 1kHz
f
IN = 50kHz
SAMPLING DYNAMICS
Full Power Bandwidth
Aperture Delay
–3dB
4
2500
5
±1/8
±1/2
MHz
ns
ns
LSB
LSB
SFR D2 LOW
SRF D2 HIGH
SFR D2 LOW
Offset Error
±1/4
±1
SFR D2 HIGH, Internal Clock or
Sampling Command Synchronous
to External Clock
SFR D2 HIGH, Sampling Command
Asynchronous to External Clock
±4
LSB
DIGITAL INPUTS
All Pins Other Than CLK: VIL
VIH
0.8
V
V
µA
µA
V
2.4
3.5
Input Current
T
A = +25°C, VIN = 0 to VD
1
10
0.8
T
A = –40°C to +85°C, VIN = 0 to VD
CLK Input: VIL
VIH
IIL
IIH
IIH
V
10
1.5
100
µA
mA
nA
Power Down Mode (D3 in SFR HIGH)
NOTES: (1) For (VREF+) – (VREF–) as low as 4.5V, the total error will typically not exceed ±1LSB. (2) After calibration cycle, without external adjustment. Includes gain
(full scale) error, offset error, integral nonlinearity, differential nonlinearity, and drift.
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.
®
2
ADS7803
BB [ BURR-BROWN CORPORATION ]
