ALD500 View Datasheet(PDF) - Advanced Linear Devices
Part Name
Description
Manufacturer
ALD500 Datasheet PDF : 11 Pages
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PIN DESCRIPTION
Pin No.
1
2
Symbol
CINT
V-
3
CAZ
4
BUF
5
AGND
6
C-REF
7
C+REF
8
V-REF
9
V+REF
10
V-IN
11
V+IN
12
A
13
B
14
COUT
15
DGND
16
V+
Description
Integrator capacitor connection.
Negative power supply.
The Auto-zero capacitor connection.
The Integrator resistor buffer connection.
This pin is analog ground.
Negative reference capacitor connection.
Positive reference capacitor connection.
External voltage reference (-) connection.
External voltage reference (+) connection.
Negative analog input.
Positive analog input.
Converter phase control MSB Input.
Converter phase control LSB Input.
Comparator output. COUT is HIGH during the Integration phase when a positive input voltage is being integrated and
is LOW when a negative input voltage is being integrated. A HIGH-to-LOW transition on COUT signals the processor
that the Deintegrate phase is completed. COUT is undefined during the Auto-Zero phase. It should be monitored to
time the Integrator Zero phase.
Digital ground.
Positive power supply.
Table 1. Conversion Phase and Control Logic Internal Analog Switch Functions
Switch Functions
Conversion
Phase
Control
Logic
Input
Connect
SWIN
Reference Input
Polarity
SW+R or SW-R
Auto Zero
SWAZ
Reference VIN=AGND
Sample
SWR
SWG
System
Offset
SWS
Auto Zero
A = 0, B = 1
Input Signal
Integration
A = 1, B = 0
Reference Voltage A = 1, B = 1
Deintegration
Integrator
Output Zero
A = 0, B = 0
Open
Closed
Open
Open
Open
Open
Closed*
Open
Closed
Open
Open
Open
Closed
Open
Open
Closed
Closed
Open
Closed
Closed
Open
Open
Open
Closed
*SW+R would be closed for a positive input signal. SW-R would be closed for a negative input signal.
6
Advanced Linear Devices
ALD500AU/ALD500A/ALD500
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