HV257FG Supertex, HV257FG Datasheet - Page 13

• Manufacturer Part Number: HV257FG
• Description: Sample & Hold Amplifiers 32-CH MEMS Drvr IC
• Manufacturer: Supertex

Specifications of HV257FG

• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 10 C
• Mounting Style: SMD/SMT
• Package / Case: MQFP-100
• Lead Free Status / RoHS Status: Not Compliant

Pin Description
34-38
46-79
Pin #
39
40
41
42
43
44
45
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
BYP-AVNN
BYP-AVDD
Function
Cathode
DGND
AGND
AGND
DVNN
DVDD
DVDD
DVNN
AGND
Anode
AVNN
AVDD
AVDD
AVNN
VSIG
NC
NC
NC
EN
A0
A1
A2
A3
A4
(cont.)
Description
No connect
Analog ground. There are three pads. They need to be externally connected.
Analog low voltage negative supply. This should be at the same potential as DVNN. There are
two pads.
No connect
Analog low voltage positive supply. This should be at the same potential as DVDD. There are
two pads.
Analog ground. There are three pads. They need to be externally connected.
Digital low voltage negative supply. This should be at the same potential as AVNN. There are
two pads.
Digital low voltage positive supply. This should be at the same potential as AVDD. There are
two pads.
No Connect
Active logic high input. Logic low will keep sample and hold switches open.
Decoder logic input. Addressed channel will close the sample and hold switch. Sample and hold
switches for unaddressed channels are kept open.
Digital ground.
Digital low voltage positive supply. This should be at the same potential as AVDD. There are
two pads.
Digital low voltage negative supply. This should be at the same potential as AVNN. There are
two pads.
Analog ground. There are three pads. They need to be externally connected.
Common input signal for all 32 sample and hold circuits.
Analog low voltage positive supply. This should be at the same potential as DVDD. There are
two pads.
Internally generated reference voltage. An external low voltage (1.0 - 10nF) capacitor needs to
be connected across AVNN and BYP-AVNN.
Internally generated reference voltage. An external low voltage (1.0 - 10nF) capacitor needs to
be connected across AVDD and BYP-AVDD.
Analog low voltage negative supply. This should be at the same potential as DVNN. There are
two pads.
Anode side of a low voltage silicon diode that can be used to monitor die temperature.
Cathode side of a low voltage silicon diode that can be used to monitor die temperature.
●
1235 Bordeaux Drive, Sunnyvale, CA 94089
13
●
Tel: [phone]
●
www.supertex.com