AD7606-6 Analog Devices, AD7606-6 Datasheet - Page 25

• Manufacturer Part Number: AD7606-6
• Description: 6-Channel DAS with 16-Bit, Bipolar, Simultaneous Sampling ADC
• Manufacturer: Analog Devices

Specifications of AD7606-6

• Resolution (bits): 16bit
• # Chan: 6
• Sample Rate: 200kSPS
• Interface: Ser,SPI,Par
• Analog Input Type: Diff-Uni
• Ain Range: Bip 10V,Bip 5.0V
• Adc Architecture: SAR
• Pkg Type: QFP

Data Sheet
TYPICAL CONNECTION DIAGRAM
Figure 43 shows the typical connection diagram for the AD7606/
AD7606-6/AD7606-4. There are four AV
part, and each of the four pins should be decoupled using a 100 nF
capacitor at each supply pin and a 10 µF capacitor at the supply
source. The AD7606/AD7606-6/AD7606-4 can operate with the
internal reference or an externally applied reference. In this
configuration, the AD7606 is configured to operate with the
internal reference. When using a single AD7606/AD7606-6/
AD7606-4 device on the board, the REFIN/REFOUT pin
should be decoupled with a 10 µF capacitor. Refer to the
Internal/External Reference section when using an application
with multiple AD7606/AD7606-6/AD7606-4 devices. The
REFCAPA and REFCAPB pins are shorted together and
decoupled with a 10 µF ceramic capacitor.
The V
processor. The V
output logic signals. For layout, decoupling, and grounding
hints, see the Layout Guidelines section.
After supplies are applied to the AD7606/AD7606-6/AD7606-4,
a reset should be applied to the AD7606/AD7606-6/AD7606-4
to ensure that it is configured for the correct mode of operation.
POWER-DOWN MODES
Two power-down modes are available on the AD7606/AD7606-6/
AD7606-4: standby mode and shutdown mode. The STBY pin
controls whether the AD7606/AD7606-6/AD7606-4 are in
normal mode or in one of the two power-down modes.
DRIVE
supply is connected to the same supply as the
DRIVE
voltage controls the voltage value of the
EIGHT ANALOG
INPUTS V1 TO V8
1
2
DECOUPLING CAPACITOR CAN BE SHARED BETWEEN AV
DECOUPLING SHOWN ON THE AV
DECOUPLING SHOWN ON THE REGCAP PIN APPLIES TO EACH REGCAP PIN (PIN 36, PIN 39).
10µF
+
CC
supply pins on the
10µF
REFCAPA
REFCAPB
REFGND
V1
V1GND
V2
V2GND
V3
V3GND
V4
V4GND
V5
V5GND
V6
V6GND
V7
V7GND
V8
V8GND
REFIN/REFOUT
Figure 43. AD7606 Typical Connection Diagram
+
CC
1µF
PIN APPLIES TO EACH AV
Rev. C | Page 25 of 36
AD7606
REGCAP
AGND
100nF
CONVST A, CONVST B
ANALOG SUPPLY
2
VOLTAGE 5V
AV
PAR/SER SEL
The power-down mode is selected through the state of the
RANGE pin when the STBY pin is low. Table 7 shows the
configurations required to choose the desired power-down mode.
When the AD7606/AD7606-6/AD7606-4 are placed in standby
mode, the current consumption is 8 mA maximum and power-
up time is approximately 100 µs because the capacitor on the
REFCAPA and REFCAPB pins must charge up. In standby mode,
the on-chip reference and regulators remain powered up, and
the amplifiers and ADC core are powered down.
When the AD7606/AD7606-6/AD7606-4 are placed in shutdown
mode, the current consumption is 6 µA maximum and power-up
time is approximately 13 ms (external reference mode). In shut-
down mode, all circuitry is powered down. When the AD7606/
AD7606-6/AD7606-4 are powered up from shutdown mode,
a RESET signal must be applied to the AD7606/AD7606-6/
AD7606-4 after the required power-up time has elapsed.
Table 7. Power-Down Mode Selection
Power-Down Mode
Standby
Shutdown
DB0 TO DB15
REF SELECT
CC
CC
PIN 37 AND PIN 38.
RANGE
RESET
CC
V
BUSY
1
STBY
OS 2
OS 1
OS 0
DRIVE
PIN (PIN 1, PIN 37, PIN 38, PIN 48).
CS
RD
DIGITAL SUPPLY
VOLTAGE +2.3V TO +5.25V
100nF
INTERFACE
PARALLEL
OVERSAMPLING
AD7606/AD7606-6/AD7606-4
V
DRIVE
V
DRIVE
STBY
0
0
RANGE
1
0