MP8820
ELECTRICAL CHARACTERISTICS TABLE FOR DUAL SUPPLIES
Unless Otherwise Noted: V
DD
= 5 V, GND = 0 V, V
REF(+)
= 1.5 V, V
REF(–)
= 0 V, V
MID
= 2.5 V.
25
°
C
Typ
Parameter
DC CHARACTERISTICS
Resolution
Differential Non-Linearity
Differential Non-Linearity
2
Integral Non-Linearity
7
Integral Non-Linearity
4, 7
Monotonicity
Bipolar Zero Error
Symbol
Min
Max
Units
Test Conditions/Comments
N
DNL
DNL
INL
INL
B
ZE
8
–1
–1
–1
–1
–25
+1/4
+1/2
+1/2
+1/2
Guaranteed
10
1
1
1
1
25
Bits
LSB
LSB
LSB
LSB
mV
@ V
REF(+)
– V
REF(–)
= 0.5 V
@ V
REF(+)
– V
REF(–)
= 0.5 V
Offset is measured as the bipolar
zero code transition,
01111111 to 10000000, relative to
V
MID
Zero Scale Drift
2, 5
Full Scale Error
V
MID
to V
RT
V
MID
to V
RB
Z
SD
50
µV/°C
%FS
+F
SE
–F
SE
–5.0
–5.0
2.5
2.5
5.0
5.0
This is a measure of the
internal reference
translation. Ideally
V
RT
– V
MID
= V
MID
– V
RB
=
V
REF(+)
– V
REF(–)
The analog input is specified as
Vpp centered around V
MID
From rising edge of WR
Measured with V
IN
– DC = 2.5 V
and WR = low
Full Scale Drift
2, 6
DC Input Range
1
Aperture Delay
Input Capacitance
F
SD
V
IN
p-p
t
AP
C
IN
0.025
1
50
25
3
%FS/°C
Vpp
ns
pF
REFERENCE VOLTAGES
Positive Reference Input Voltage
V
REF(+)
Input Resistance
Internal Reference Settling Time
V
REF(+)
RVR+
VR
STL
0.5
1
500
1.5
V
MΩ
ns
Reference voltage with respect to
V
REF(–)
Settling time required for ADC to
make a proper conversion after
(V
REF(+)
– V
REF(–)
) has changed
Negative Reference Input Voltage
V
REF(–)
Input Resistance
V
MID
Input Current
V
MID
Range
V
REF(–)
RVR–
I
VM
V
MID
0
1
0
2.5
V
REF(+)
–0.5
2
3
V
KΩ
mA
V
V
MID
< V
DD
–0.5 –
[V
REF(+)
– V
REF(–)
]
V
MID
< V
SS
+0.5 +
[V
REF(–)
– V
REF(–)
]
All GNDs are Chip Substrate
POWER SUPPLIES
Positive Supply
Negative Supply
Power Supply Rejection Ratio
2
Supply Current
DIGITAL CHARACTERISTICS
3, 4
Digital Input High Voltage
Digital Input Low Voltage
V
IH
V
IL
4
1
V
V
V
DD
GND
PSRR
I
DD
4.75
0
5
0
5.25
0
–48
45
V
V
dB
mA
f = 1 kHz. Not tested.
Rev. 1.00
3
EXAR [ EXAR CORPORATION ]
