AD7732BRU Analog Devices Inc, AD7732BRU Datasheet - Page 31

• Manufacturer Part Number: AD7732BRU
• Description: Analog/Digital Converter IC Number Of Bits:24
• Manufacturer: Analog Devices Inc

Specifications of AD7732BRU

• Interface Type: Serial
• Supply Voltage Max.: 5V
• Package/case: 24-TSSOP
• Leaded Process Compatible: No
• A/d, D/a Features: DSP, MicroWire, QSPI, SPI
• Adc Resolution: 24-Bit
• Rohs Status: RoHS non-compliant
• Number Of Bits: 24
• Sampling Rate (per Second): 15.4k
• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 100mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 28-TSSOP (0.173", 4.40mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With: EVAL-AD7732EBZ - BOARD EVAL FOR AD7732
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

High Common-Mode Voltage Application
Using additional thin film resistors on AIN0 and an external operational amplifier with a ±15 V power supply, the AD7732 AIN0 can
easily be configured to accept high common-mode voltages.
±37V COMMON-
MODE VOLTAGE
(±42V ABSOLUTE
MAX VOLTAGE
TO AGND)
±11.5V COMMON-
MODE VOLTAGE
AV
AV
+
+
(MAX ±16.5V
ABSOLUTE
VOLTAGE
TO AGND)
DD
DD
10 µ F
10µF
TEMP
TEMP
+VIN
+VIN
0.01µF
0.01 µ F
ANALOG
INPUTS
ANALOG
INPUTS
±10V
DIFFERENTIAL
VOLTAGE
±10V
DIFFERENTIAL
VOLTAGE
±10V
DIFFERENTIAL
VOLTAGE
AD780
AD780
VOUT
VOUT
AV
AV
+
+
+
+
DD
DD
+2.5V
+2.5V
10µF
10 µ F
10µF
10 µ F
+15V
–15V
Figure 29. Typical Connections for the AD7732 Application
Figure 30. High Common-Mode Voltage Application
REFIN(+)
REFIN(+)
REFIN(–)
BIAS0(+)
REFIN(–)
BIAS0(+)
BIAS0(–)
BIAS1(+)
BIAS1(–)
BIAS0(–)
AIN0(+)
AIN1(+)
AIN0(+)
AIN0(–)
AIN1(–)
AIN0(–)
0.1µF
0.1 µ F
RA
RB
RC
RD
RA
RB
RC
RD
7R=108.5k Ω
R=15.5k Ω
R=15.5kΩ
7R=108.5kΩ
2R
2R
2R
2R
7R
7R
7R
7R
R
R
R
Rev. 0 | Page 31 of 32
MUX
MUX
AGND
AGND
AV
AV
DD
DD
AD7732
AD7732
BUFFER
BUFFER
GENERATOR
GENERATOR
INTERFACE
INTERFACE
CONTROL
CONTROL
CLOCK
SERIAL
Σ - ∆ ADC
SERIAL
CLOCK
Σ-∆ ADC
LOGIC
LOGIC
24-BIT
24-BIT
AND
AND
DV
DV
DGND
DGND
DD
DD
MCLKOUT
MCLKOUT
MCLKIN
RESET
SCLK
DIN
DOUT
RDY
CS
MCLKIN
RESET
SCLK
DIN
DOUT
RDY
CS
0.1µF
0.1 µ F
33pF
33pF
DV DD
DV DD
6.144MHz
6.144MHz
HOST
SYSTEM
HOST
SYSTEM
DV
DV
+
+
DD
DD
10 µ F
33pF
10µF
33pF
AD7732