19699-002-XTP ON Semiconductor, 19699-002-XTP Datasheet - Page 13

• Manufacturer Part Number: 19699-002-XTP
• Manufacturer: ON Semiconductor

Specifications of 19699-002-XTP

• Number Of Transmitters: 1
• Power Supply Requirement: Dual
• Package Type: LQFP
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 44
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Lead Free Status / RoHS Status: Compliant

AMIS-49200
If you do not use one of the regulators, the corresponding alarm signal can potentially be used to monitor another signal. For example,
if the series regulator is not used, SRAO should be left open, SRTR tied to VCC, VO grounded and SRSET left open. Then SRSETIN
can be the input for monitoring another voltage signal with N_PFAIL2.
4.2.4. Voltage Reference
The voltage reference circuitry generates two voltage signals, VREF and VMID. VREF comes from a bandgap circuit and is used as
the reference voltage for all circuits in the AMIS-49200 Fieldbus MAU. The typical value for VREF is 1.185V. See Figure 7.
An operational amplifier is regulating VMID to provide a bias (common) level for the AC signals. Its typical voltage is 2V. A capacitor
larger than 0.01μF is necessary on VMID to remove high-frequency ripple.
SHSETIN
SRSETIN
0.9*VREF
0.9*VREF
Figure 7: Bandgap and VMID Voltage Reference
Rev. 5 | Page 13 of 22 | www.onsemi.com
Figure 6: Low Voltage Detectors
Low Voltage Detectors
VCC2
VCC2
C3
C4
N_PFail1
N_PFail2
4
5
VDD
R1
C1
VDD
R2
C2