PCA9691BS/1 NXP Semiconductors, PCA9691BS/1 Datasheet - Page 22

• Manufacturer Part Number: PCA9691BS/1
• Description: IC, ADC/DAC, 8-BIT, I2C, 16-HVQFN
• Manufacturer: NXP Semiconductors

Specifications of PCA9691BS/1

• Brief Features: 8bit Successive Approximation A/D Conversion, Low Standby Current
• Supply Voltage Range: 2.5V To 5.5V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: VQFN
• No. Of: RoHS Compliant
• Ic Function: 8-bit A/D & D/A Converter
• Rohs Compliant: Yes

NXP Semiconductors
11. Application information
PCA9691_2
Product data sheet
[1]
Inputs must be connected to V
connected to pins AGND or VREF.
In order to prevent excessive ground and supply noise and to minimize crosstalk of the
digital-to-analog signal paths the printed-circuit board layout must be designed very
carefully. Noisy digital circuits and ground loops must be avoided on the supply lines
common to the PCA9691 device. Decoupling capacitors (> 10 μF) are recommended for
power supply and reference voltage inputs.
During data transfer the first bit written out is the MSB and the last bit is the LSB.
Fig 24. Application diagram
The linearity error is assured if the internal frequency is changed by setting bit 7 and bit 3 of the control byte
to logic 1 (see
V
Figure
DD
analog
ground
digital
ground
6).
Rev. 02 — 27 January 2010
Θ
V
V 0
DD
V 0
SS
Θ
V 1
or V
V
DD
DD
AIN0
AIN1
AIN2
AIN3
A0
A1
A2
AIN0
AIN1
AIN2
AIN3
A0
A1
A2
when not in use. Analog inputs may also be
TRANSMITTER
PCA9691
PCA9691
MASTER
V
V
V
V
V
V
V
DD
DD
SS
DD
DD
SS
DD
AGND
AGND
AOUT
AOUT
VREF
VREF
OSC
OSC
SDA
SDA
EXT
SCL
EXT
SCL
V
V
8-bit A/D and D/A converter
OUT
OUT
V 2
V
DD
001aag473
I
PCA9691
2
© NXP B.V. 2010. All rights reserved.
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