AD7952 Ver la hoja de datos (PDF) - Analog Devices
Número de pieza
componentes Descripción
Fabricante
AD7952 Datasheet PDF : 32 Pages
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Data Sheet
ANALOG
SUPPLY (5V)
10µF
100nF
NOTE 5
10Ω
DIGITAL
SUPPLY (5V)
10µF 100nF
100nF
10µF
AD7952
DIGITAL
INTERFACE
SUPPLY
(2.5V, 3.3V, OR 5V)
+7V TO +15.75V
SUPPLY
10µF
100nF
–7V TO –15.75V
SUPPLY
NOTE 6
10µF
100nF
CREF
NOTE 4 22µF
100nF
ANALOG
INPUT+
NOTE 2
U1
15Ω
CC
2.7nF
ANALOG
INPUT–
NOTE 2
U1
15Ω
CC
NOTE 1
2.7nF
AVDD AGND DGND
VCC
DVDD OVDD OGND
BUSY
VEE
REF NOTE 3
REFBUFIN
REFGND
IN+
IN–
SDCLK
SDOUT
SCCLK
SCIN
SCCS
AD7952
NOTE 3
PDREF PDBUF
CNVST
OB/2C
SER/PAR
HW/SW
BIPOLAR
TEN
WARP
IMPULSE
PD RD CS RESET
AGND DGND
NOTE 8
NOTE 7
33Ω
D
OVDD
MicroConverter®/
MICROPROCESSOR/
DSP
SERIAL
PORT 1
SERIAL
PORT 2
CLOCK
NOTES
1. ANALOG INPUTS ARE DIFFERENTIAL (ANTIPHASE). SEE ANALOG INPUTS SECTION.
2. THE AD8021 IS RECOMMENDED. SEE DRIVER AMPLIFIER CHOICE SECTION.
3. THE CONFIGURATION SHOWN IS USING THE INTERNAL REFERENCE. SEE VOLTAGE REFERENCE INPUT/OUTPUT SECTION.
4. A 22µF CERAMIC CAPACITOR (X5R, 1206 SIZE) IS RECOMMENDED (FOR EXAMPLE, PANASONIC ECJ4YB1A226M).
SEE VOLTAGE REFERENCE INPUT/OUTPUT SECTION.
5. OPTIONAL, SEE POWER SUPPLIES SECTION.
6. THE VCC AND VEE SUPPLIES SHOULD BE VCC = [VIN(MAX) + 2V] AND VEE = [VIN(MIN) – 2V] FOR BIPOLAR INPUT RANGES.
FOR UNIPOLAR INPUT RANGES, VEE CAN BE 0V. SEE POWER SUPPLIES SECTION.
7. OPTIONAL LOW JITTER CNVST, SEE CONVERSION CONTROL SECTION.
8. A SEPARATE ANALOG AND DIGITAL GROUND PLANE IS RECOMMENDED, CONNECTED TOGETHER DIRECTLY UNDER THE ADC.
SEE LAYOUT GUIDELINES SECTION.
Figure 27. Typical Connection Diagram Shown with Serial Interface and Serial Programmable Port
Rev. A | Page 19 of 32
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