EVAL-AD7766-1EDZ Analog Devices Inc, EVAL-AD7766-1EDZ Datasheet - Page 9

• Manufacturer Part Number: EVAL-AD7766-1EDZ
• Description: BOARD EVAL AD7766-1 64KSPS 111DB
• Manufacturer: Analog Devices Inc

Specifications of EVAL-AD7766-1EDZ

• Number Of Adc's: 1
• Number Of Bits: 24
• Sampling Rate (per Second): 64k
• Data Interface: Serial
• Inputs Per Adc: 1 Differential
• Input Range: ±VREF
• Power (typ) @ Conditions: 10.5mW @ 64kSPS
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 105°C
• Utilized Ic / Part: AD7766-1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 5. Pin Function Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Mnemonic
AV
V
REFGND
V
V
AGND
SYNC/PD
DV
V
SDO
DGND
DRDY
SCLK
MCLK
SDI
CS
REF+
IN+
IN−
DRIVE
DD
DD
Description
+2.5 V Analog Power Supply.
Reference Input for the AD7766/AD7766-1/AD7766-2. An external reference must be applied to this input pin. The
V
applied to the AV
Reference Ground. Ground connection for the reference voltage. The input reference voltage (V
decoupled to this pin.
Positive Input of the Differential Analog Input.
Negative Input of the Differential Analog Input.
Power Supply Ground for Analog Circuitry.
Synchronization and Power-Down Input Pin. This pin has dual functionality. It can be used to synchronize multiple
AD7766/AD7766-1/AD7766-2 devices and/or to put the AD7766/AD7766-1/AD7766-2 devices into power-down
mode. See the Power-Down, Reset, and Synchronization section for further details.
2.5 V Digital Power Supply Input. In cases where a logic voltage of 2.5 V for interfacing is used, (2.5 V applied to
V
Logic Power Supply Input, 1.8 V to 3.6 V. The voltage supplied at this pin determines the operating voltage of the
digital logic interface.
Serial Data Output. The conversion result from the AD7766/AD7766-1/AD7766-2 is output on the SDO pin as a 24-bit,
twos complement, MSB first, serial data stream.
Digital Logic Power Supply Ground.
Data Ready Output. A falling edge on the DRDY signal indicates that a new conversion data result is available in the
output register of the AD7766/AD7766-1/AD7766-2. See the
further details.
Serial Clock Input. The SCLK input provides the serial clock for all serial data transfers with the AD7766/AD7766-1/
AD7766-2 devices. See the AD7766/AD7766-1/AD77662-2 Interface section for further details.
Master Clock Input. The sampling frequency of the AD7766/AD7766-1/AD7766-2 is equal to the MCLK frequency.
Serial Data Input. This is the daisy-chain input of the AD7766/AD7766-1/AD7766-2. See the Daisy Chaining section
for further details.
Chip Select Input. The CS input selects a specific AD7766/AD7766-1/AD7766-2 device and acts as an enable on the
SDO pin. In cases where CS is used, the MSB of the conversion result is clocked onto the SDO line on the CS falling
edge. The CS input allows multiple AD7766/AD7766-1/AD7766-2 devices to share the same SDO line. This allows
the user to select the appropriate device by supplying it with a logic low CS signal, which enables the SDO pin of
the device concerned. See the
REF+
DRIVE
input can range from 2.4 V to 5 V. The reference voltage input is independent of the voltage magnitude
pin), the DV
DD
DD
pin.
and V
DRIVE
Figure 6. 16-Lead TSSOP Pin Configuration
SYNC/PD
REFGND
pins may be connected to the same voltage supply rail.
AGND
AD7766/AD7766-1/AD77662-2 Interface
V
AV
DV
REF+
V
V
IN+
IN–
DD
DD
1
3
4
5
6
8
2
7
Rev. C | Page 9 of 24
(Not to Scale)
AD7766-2
AD766-1/
AD7766/
TOP VIEW
16
15
14
13
12
11
10
9
CS
SDI
MCLK
SCLK
DRDY
DGND
SDO
V
DRIVE
AD7766/AD7766-1/AD77662-2 Interface
section for further details.
REF+
) should be
section for
AD7766