®
ADS7807
2
SPECIFICATIONS
ELECTRICAL
At T
A
= –40
°
C to +85
°
C, f
S
= 40kHz, V
DIG
= V
ANA
= +5V, using internal reference and fixed resistors shown in Figure 7b, unless otherwise specified.
ADS7807P, U
ADS7807PB, UB
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
Parallel 16 bits in 2-bytes; Serial
Binary Two’s Complement or Straight Binary
RESOLUTION
16
*
Bits
ANALOG INPUT
Voltage Ranges
±
10, 0 to +5, 0 to +4
V
Impedance
(See Table II)
Capacitance
35
*
pF
THROUGHPUT SPEED
Conversion Time
20
*
µ
s
Complete Cycle
Acquire and Convert
25
*
µ
s
Throughput Rate
40
*
kHz
DC ACCURACY
Integral Linearity Error
±
3
±
1.5
LSB
(1)
Differential Linearity Error
+3, –2
+1.5, –1
LSB
No Missing Codes
15
16
Bits
Transition Noise
(2)
0.8
*
LSB
Gain Error
±
0.2
±
0.1
%
Full Scale Error
(3,4)
±
0.5
±
0.25
%
Full Scale Error Drift
±
7
±
5
ppm/
°
C
Full Scale Error
(3,4)
Ext. 2.5000V Ref
±
0.5
±
0.25
%
Full Scale Error Drift
Ext. 2.5000V Ref
±
0.5
*
ppm/
°
C
Bipolar Zero Error
(3)
±
10V Range
±
10
*
mV
Bipolar Zero Error Drift
±
10V Range
±
0.5
*
ppm/
°
C
Unipolar Zero Error
(3)
0V to 5V, 0V to 4V Ranges
±
3
*
mV
Unipolar Zero Error Drift
0V to 5V, 0V to 4V Ranges
±
0.5
*
ppm/
°
C
Recovery Time to Rated Accuracy
2.2
µ
F Capacitor to CAP
1
*
ms
from Power Down
(5)
Power Supply Sensitivity
+4.75V < V
S
< +5.25V
±
8
*
LSB
(V
DIG
= V
ANA
= V
S
)
AC ACCURACY
Spurious-Free Dynamic Range
f
IN
= 1kHz,
±
10V
90
100
96
*
dB
(6)
Total Harmonic Distortion
f
IN
= 1kHz,
±
10V
–100
–90
*
–96
dB
Signal-to-(Noise+Distortion)
f
IN
= 1kHz,
±
10V
83
88
86
*
dB
–60dB Input
30
32
dB
Signal-to-Noise
f
IN
= 1kHz,
±
10V
83
88
86
*
dB
Usable Bandwidth
(7)
130
*
kHz
Full Power Bandwidth (–3dB)
600
*
kHz
SAMPLING DYNAMICS
Aperture Delay
40
*
ns
Aperture Jitter
20
*
ps
Transient Response
FS Step
5
*
µ
s
Overvoltage Recovery
(8)
750
*
ns
REFERENCE
Internal Reference Voltage
No Load
2.48
2.5
2.52
*
*
*
V
Internal Reference Source Current
1
*
µ
A
(Must use external buffer.)
Internal Reference Drift
8
*
ppm/
°
C
External Reference Voltage Range
2.3
2.5
2.7
*
*
*
V
for Specified Linearity
External Reference Current Drain
Ext. 2.5000V Ref
100
*
µ
A
DIGITAL INPUTS
Logic Levels
V
IL
–0.3
+0.8
*
*
V
V
IH
+2.0
V
D
+0.3V
*
*
V
I
IL
V
IL
= 0V
±
10
*
µ
A
I
IH
V
IH
= 5V
±
10
*
µ
A
DIGITAL OUTPUTS
Data Format
Data Coding
V
OL
I
SINK
= 1.6mA
+0.4
*
V
V
OH
I
SOURCE
= 500
µ
A
+4
*
V
Leakage Current
High-Z State,
±
5
*
µ
A
V
OUT
= 0V to V
DIG
Output Capacitance
High-Z State
15
*
pF
