EVAL-AD974CB Analog Devices Inc, EVAL-AD974CB Datasheet - Page 4

• Manufacturer Part Number: EVAL-AD974CB
• Description: BOARD EVAL FOR AD974
• Manufacturer: Analog Devices Inc

Specifications of EVAL-AD974CB

• Rohs Status: RoHS non-compliant
• Number Of Adc's: 1
• Number Of Bits: 16
• Sampling Rate (per Second): 200k
• Data Interface: Serial
• Inputs Per Adc: 4 Single Ended
• Input Range: ±10 V
• Power (typ) @ Conditions: 120mW @ 200kSPS
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: AD974
• Lead Free Status / RoHS Status: Not Compliant

EVAL-AD974CB
Jumper
Designation
JP14
JP15, JP16
JP17
JP18
JP19
JP20
JP21
JP22, JP23
JP24, JP25
JP26, JP27
JP28
Function
JP14 determines the source of the analog Channel 1 input of the AD974. To supply the AD974 analog Channel 1
input signal directly from the SMB connector, J3, set JP14 to Position B. Set JP14 to Position A to select the op
amp output.
These two jumpers are used to select the configuration of the op amp, U3. To configure the op amp as an inverter,
install the header shunt of JP15 to Position A and JP16 to Position B. To configure the op amp as a noninverter,
install the header shunt of JP15 to Position B and JP16 to Position A.
JP17 selects the digital power source for the AD974-CB digital interface circuitry. Install the jumper to provide a
single +5 V supply to all of the on-board components. Remove this header shunt to separate the analog supply
for the AD974 from the supply for the digital interface circuitry. When used in conjunction with the EVAL-
CONTROL BOARD, V
header shunt is installed, JP28 must also be installed.
With JP19 in Position B, the header shunt for JP18 allows the positive supply voltage of op amp, U3, to come
from either connector P3 (Position A), or the +12 V supply from the EVAL-CONTROL BOARD (Position B).
With JP19 set to Position A, the positive supply for the op amp, U3, is connected to VANA. When JP19 is set to
Position B, U3’s positive supply voltage is connected to either the +12 V from the EVAL-CONTROL BOARD
(JP18 Position B), or the external supply (+V
With JP21 in Position A, the header shunt for JP20 allows the negative supply voltage of op amp, U3, to come
from either connector P3 (Position B), or the –12 V supply from the EVAL-CONTROL BOARD (Position A).
With JP21 set to Position B, the negative supply for the op amp, U3, is connected to analog ground (AGND).
When JP21 is set to Position A, U3’s negative supply voltage comes from either the –12 V from the EVAL-CON-
TROL BOARD (JP20 Position A) or the external supply (–V
These TWO jumpers set the analog input ranges for Channel 3 according to Tables I through Table III.
These TWO jumpers set the analog input ranges for Channel 4 according to Tables I through Table III.
These TWO jumpers set the analog input ranges for Channel 2 according to Tables I through Table III.
Install JP28 when using a single +5 V supply for the EVAL-CONTROL BOARD. Thus, install JP28 when JP17 is
connected.
ANA
and V
DIG
are respectively the +5 V and VDD from the 96-pin connector. When this
CC
) from connector P3 (JP18 Position A).
CC
) from connector P3 (JP20 Position B).