AD7190BRUZ Analog Devices Inc, AD7190BRUZ Datasheet - Page 11

• Manufacturer Part Number: AD7190BRUZ
• Description: IC ADC 2CH 24BIT W/PGA 24TSSOP
• Manufacturer: Analog Devices Inc

Specifications of AD7190BRUZ

• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Design Resources: Precision Weigh Scale Design Using AD7190 with Internal PGA (CN0102)
• Number Of Bits: 24
• Sampling Rate (per Second): 4.8k
• Number Of Converters: 1
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP (0.173", 4.40mm Width)
• Resolution (bits): 24bit
• Sampling Rate: 4.8kSPS
• Input Channel Type: Pseudo Differential
• Supply Voltage Range - Analog: 4.75V To 5.25V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Pin No.
13
14
15
16
17
18
19
20
21
22
23
24
Mnemonic
AIN3
AIN4
REFIN1(+)
REFIN1(−)
BPDSW
AGND
DGND
AV
DV
SYNC
DOUT/RDY
DIN
DD
DD
Description
Analog Input. It can be configured as the positive input of a fully differential input pair when used with
AIN4 or as a pseudo differential input when used with AINCOM.
Analog Input. It can be configured as the negative input of a fully differential input pair when used with
AIN3 or as a pseudo differential input when used with AINCOM.
Positive Reference Input. An external reference can be applied between REFIN1(+) and REFIN1(−).
REFIN1(+) can lie anywhere between AV
REFIN1(−)), is AV
Negative Reference Input. This reference input can lie anywhere between AGND and AV
Bridge Power-Down Switch to AGND.
Analog Ground Reference Point.
Digital Ground Reference Point.
Analog Supply Voltage, 4.75 V to 5.25 V. AV
Digital Supply Voltage, 2.7 V to 5.25 V. DV
Logic input that allows for synchronization of the digital filters and analog modulators when using
multiple AD7190 devices. While SYNC is low, the nodes of the digital filter, the filter control logic, and the
calibration control logic are reset and the analog modulator is held in its reset state. SYNC does not affect
the digital interface but does reset RDY to a high state if it is low. SYNC has a pull-up resistor internally to
DV
Serial Data Output/Data Ready Output. DOUT/RDYserves a dual purpose. It functions as a serial data
output pin to access the output shift register of the ADC. The output shift register can contain data from
any of the on-chip data or control registers. In addition, DOUT/RDY operates as a data ready pin, going low
to indicate the completion of a conversion. If the data is not read after the conversion, the pin goes high
before the next update occurs. The DOUT/RDY falling edge can be used as an interrupt to a processor,
indicating that valid data is available. With an external serial clock, the data can be read using the
DOUT/RDY pin. With CS low, the data/control word information is placed on the DOUT/RDY pin on
the SCLK falling edge and is valid on the SCLK rising edge.
Serial Data Input to the Input Shift Register on the ADC. Data in this shift register is transferred to the
control registers in the ADC, with the register selection bits of the communications register identifying the
appropriate register.
DD
.
DD
, but the part functions with a reference from 1 V to AV
Rev. B | Page 11 of 40
DD
DD
and AGND + 1 V. The nominal reference voltage, (REFIN1(+) −
DD
is independent of AV
is independent of DV
DD
DD
.
.
DD
.
DD
− 1 V.
AD7190