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MP8820 Datasheet(PDF) 3 Page - Exar Corporation

No. de pieza MP8820
Descripción Electrónicos  8-Bit Analog-to-Digital Converter with an 8-Channel MUX
Download  12 Pages
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Fabricante Electrónico  EXAR [Exar Corporation]
Página de inicio  http://www.exar.com
Logo EXAR - Exar Corporation

MP8820 Datasheet(HTML) 3 Page - Exar Corporation

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MP8820
3
Rev. 1.00
ELECTRICAL CHARACTERISTICS TABLE FOR DUAL SUPPLIES
Unless Otherwise Noted: VDD = 5 V, GND = 0 V, VREF(+) = 1.5 V, VREF(–) = 0 V, VMID = 2.5 V.
25
°C
Parameter
Symbol
Min
Typ
Max
Units
Test Conditions/Comments
DC CHARACTERISTICS
Resolution
N
8
Bits
Differential Non-Linearity
DNL
–1
+1/4
1
LSB
Differential Non-Linearity2
DNL
–1
+1/2
1
LSB
@ VREF(+) – VREF(–) = 0.5 V
Integral Non-Linearity7
INL
–1
+1/2
1
LSB
Integral Non-Linearity4, 7
INL
–1
+1/2
1
LSB
@ VREF(+) – VREF(–) = 0.5 V
Monotonicity
Guaranteed
Bipolar Zero Error
BZE
–25
10
25
mV
Offset is measured as the bipolar
zero code transition,
01111111 to 10000000, relative to
VMID
Zero Scale Drift2, 5
ZSD
50
µV/°C
Full Scale Error
%FS
This is a measure of the
VMID to VRT
+FSE
–5.0
2.5
5.0
internal reference
VMID to VRB
–FSE
–5.0
2.5
5.0
translation. Ideally
VRT – VMID = VMID – VRB =
VREF(+) – VREF(–)
Full Scale Drift2, 6
FSD
0.025
%FS/
°C
DC Input Range1
VINp-p
1
3
Vpp
The analog input is specified as
Vpp centered around VMID
Aperture Delay
tAP
50
ns
From rising edge of WR
Input Capacitance
CIN
25
pF
Measured with VIN – DC = 2.5 V
and WR = low
REFERENCE VOLTAGES
Positive Reference Input Voltage
VREF(+)
0.5
1.5
V
Reference voltage with respect to
VREF(–)
VREF(+) Input Resistance
RVR+
1
M
Internal Reference Settling Time
VRSTL
500
ns
Settling time required for ADC to
make a proper conversion after
(VREF(+) – VREF(–)) has changed
Negative Reference Input Voltage
VREF(–)
0VREF(+) –0.5
V
VREF(–) Input Resistance
RVR–
1
K
VMID Input Current
IVM
0mA
VMID Range
VMID
2
2.5
3
V
VMID < VDD –0.5 –
[VREF(+) – VREF(–)]
VMID < VSS +0.5 +
[VREF(–) – VREF(–)]
POWER SUPPLIES
All GNDs are Chip Substrate
Positive Supply
VDD
4.75
5
5.25
V
Negative Supply
GND
0
0
0
V
Power Supply Rejection Ratio2
PSRR
–48
dB
f = 1 kHz. Not tested.
Supply Current
IDD
45
mA
DIGITAL CHARACTERISTICS3, 4
Digital Input High Voltage
VIH
4V
Digital Input Low Voltage
VIL
1V


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