Analog Devices EVAL-ADAQ7767-1 User Manual page 11

User Guide
EVALUATION BOARD HARDWARE
Table 2. Recommended Power Supply Rails when Using Input Buffers and/or An IEPE Interface (Continued)
Input Range (V) ADAQ7767-1 Input Pins
IN2− to GND
2.5 to 21.5 Unipolar Single- IN3+ = Input
Ended (Either DC-Coupled
IN3− to GND
IEPE Input to IEPE_IN or
Voltage Input to AINP/AINN)
−2.5 to −21.5, Unipolar IN3+ = Input
Single-Ended (Voltage Input
IN3− to GND
to AINP/AINN)
−2.5 to −21.5 Unipolar Single- Not applicable
Ended (IEPE)
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IEPE Supply HV_VDD
(V) Positive
VDD_BUF = INT_VDD =
15
P_BST = 26 P_BST = 26
HV_VDD = INT_VDD = VDD_BUF = INT_VDD =
24 24
Not applicable P_BST = 7
VDD_BUF = INT_VDD =
5
Not applicable Not applicable
EVAL-ADAQ7767-1
Buffer Supply VDD_BUF (V)
Negative
VSS_BUF = INT_VSS =
−15
N_BST = −7
VSS_BUF = INT_VSS =
−5
N_BST = −26
VSS_BUF = INT_VSS =
−24
Not applicable
Comments
externally supply EXT_VDD
with 24 V.
This input range is designed
for DC-coupled IEPE inputs.
Change supply rails to
suit input range. Caution:
ensure that VDD_BUF –
VSS_BUF does not exceed
the ADA4625-1 operating
voltage of 36 V.
Change supply rails to
suit input range. Caution:
ensure that VDD_BUF –
VSS_BUF does not exceed
the ADA4625-1 operating
voltage of 36 V.
Range not available for
on-board IEPE interface,
IEPE_IN.
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