ALD500R
器件描述：PRECISION INTEGRATING ANALOG PROCESSOR WITH PRECISION VOLTAGE REFERENCE
器件厂商：ALD [Advanced Linear Devices]
文件大小：93.7KB，共12页
Sponsor by e络盟器件资料摘要：
APPLICATIONS
• 4 1/2 digits to 5 1/2 digits plus sign measurements
• Precision analog signal processor
• Precision sensor interface
• High accuracy DC measurement functions
• Portable battery operated instruments
• Computer peripheral
• PCMCIA
FEATURES
• Resolution up to 18 bits plus sign bit and over-range bit
• Accuracy independent of input source impedances
• Accurate on-chip voltage reference
• Tempco as low as 10 ppm/°C guaranteed
• Chip select - power down mode
• High input impedance of 10
12
Ω
• Inherently filters and integrates any external noise spikes
• Differential analog input
• Wide bipolar analog input voltage range ±3.5V
• Automatic zero offset compensation
• Low linearity error - as low as 0.001% typical
• Fast zero-crossing comparator - 1µs
• Low power dissipation - 6mW typical
• Automatic internal polarity detection
• Low input current - 2pA typical
• Optional digital control from a microcontroller, an ASIC, or
a dedicated digital circuit
• Flexible conversion speed vs. resolution trade-off
ALD500RAU/ALD500RA/ALD500R
ADVANCED
LINEAR
DEVICES, INC.
PRECISION INTEGRATING ANALOG PROCESSOR
WITH PRECISION VOLTAGE REFERENCE
Rev. 1.01 © 1999 Advanced Linear Devices, Inc., 415 Tasman Drive, Sunnyvale, California 94089-1706 Tel: (408) 747-1155, Fax: (408) 747-1286
http://www.aldinc.com
* Contact factory for customized voltage reference voltage levels, accuracy and tempco specifications.
PIN CONFIGURATION
Resolution Endpoint Voltage Reference Package Type Operating
Linearity Accuracy/Tempco Temperature
20L PDIP 20L SOIC 20L QSOP 20LCDIP
16 bit 0.015% 0.5% 50ppm/C ALD500R-50PE ALD500R-50SE ALD500R-50QE 0°C to 70°C
17 bit 0.01% 0.3% 20ppm/C ALD500RA-20PE ALD500RA-20SE ALD500RA-20QE 0°C to 70°C
18 bit 0.005% ALD500RAU-20PE ALD500RAU-20SE ALD500RAU-20QE
17 bit 0.01% 0.2% 10ppm/C ALD500RA-10PE ALD500RA-10SE ALD500RA-10QE 0°C to 70°C
18 bit 0.005% ALD500RAU-10PE ALD500RAU-10SE ALD500RAU-10QE
17 bit 0.01% 0.3% 20ppm/C ALD500RA-20PEI ALD500RA-20SEI ALD500RA-20QEI -40°C to +85°C
18 bit 0.005% ALD500RAU-20PEI ALD500RAU-20SEI ALD500RAU-20QEI
18 bit 0.005% 0.3% 20ppm/C ALD500RAU-20DE -55°C to +125°C
Ordering Information
BENEFITS
• Low cost, simple functionality
• Wide dynamic signal range
• Very high noise immunity
• Automatic compensation and cancellation
of error sources
• Easy to use to acquire bipolar signals
• Up to 19 bit (18 bit + sign bit) single conversion
or 21 bit (20 bit + sign bit) multiple conversion
and noise performance
• Inherently linear and stable with temperature
and component variations
V
+
1
2
3
14
15
16
4
13
B5
12
A
V
+
REF
6
7
8
10 11
V
-
C
AZ
C
INT
B
UF
AGND
N/C
C
+
REF
9
V
-
IN
V
+
IN
C
OUT
DGND
QE, PE, SE PACKAGE
C
-
REF
ALD500R
17
20
19
18
V
-
REF
C
S
I
B
N/C
* N/C pin is connected internally. Connect to V
-
.
• 4 1/2 digits to 5 1/2 digits plus sign measurements
• Precision analog signal processor
• Precision sensor interface
• High accuracy DC measurement functions
• Portable battery operated instruments
• Computer peripheral
• PCMCIA
FEATURES
• Resolution up to 18 bits plus sign bit and over-range bit
• Accuracy independent of input source impedances
• Accurate on-chip voltage reference
• Tempco as low as 10 ppm/°C guaranteed
• Chip select - power down mode
• High input impedance of 10
12
Ω
• Inherently filters and integrates any external noise spikes
• Differential analog input
• Wide bipolar analog input voltage range ±3.5V
• Automatic zero offset compensation
• Low linearity error - as low as 0.001% typical
• Fast zero-crossing comparator - 1µs
• Low power dissipation - 6mW typical
• Automatic internal polarity detection
• Low input current - 2pA typical
• Optional digital control from a microcontroller, an ASIC, or
a dedicated digital circuit
• Flexible conversion speed vs. resolution trade-off
ALD500RAU/ALD500RA/ALD500R
ADVANCED
LINEAR
DEVICES, INC.
PRECISION INTEGRATING ANALOG PROCESSOR
WITH PRECISION VOLTAGE REFERENCE
Rev. 1.01 © 1999 Advanced Linear Devices, Inc., 415 Tasman Drive, Sunnyvale, California 94089-1706 Tel: (408) 747-1155, Fax: (408) 747-1286
http://www.aldinc.com
* Contact factory for customized voltage reference voltage levels, accuracy and tempco specifications.
PIN CONFIGURATION
Resolution Endpoint Voltage Reference Package Type Operating
Linearity Accuracy/Tempco Temperature
20L PDIP 20L SOIC 20L QSOP 20LCDIP
16 bit 0.015% 0.5% 50ppm/C ALD500R-50PE ALD500R-50SE ALD500R-50QE 0°C to 70°C
17 bit 0.01% 0.3% 20ppm/C ALD500RA-20PE ALD500RA-20SE ALD500RA-20QE 0°C to 70°C
18 bit 0.005% ALD500RAU-20PE ALD500RAU-20SE ALD500RAU-20QE
17 bit 0.01% 0.2% 10ppm/C ALD500RA-10PE ALD500RA-10SE ALD500RA-10QE 0°C to 70°C
18 bit 0.005% ALD500RAU-10PE ALD500RAU-10SE ALD500RAU-10QE
17 bit 0.01% 0.3% 20ppm/C ALD500RA-20PEI ALD500RA-20SEI ALD500RA-20QEI -40°C to +85°C
18 bit 0.005% ALD500RAU-20PEI ALD500RAU-20SEI ALD500RAU-20QEI
18 bit 0.005% 0.3% 20ppm/C ALD500RAU-20DE -55°C to +125°C
Ordering Information
BENEFITS
• Low cost, simple functionality
• Wide dynamic signal range
• Very high noise immunity
• Automatic compensation and cancellation
of error sources
• Easy to use to acquire bipolar signals
• Up to 19 bit (18 bit + sign bit) single conversion
or 21 bit (20 bit + sign bit) multiple conversion
and noise performance
• Inherently linear and stable with temperature
and component variations
V
+
1
2
3
14
15
16
4
13
B5
12
A
V
+
REF
6
7
8
10 11
V
-
C
AZ
C
INT
B
UF
AGND
N/C
C
+
REF
9
V
-
IN
V
+
IN
C
OUT
DGND
QE, PE, SE PACKAGE
C
-
REF
ALD500R
17
20
19
18
V
-
REF
C
S
I
B
N/C
* N/C pin is connected internally. Connect to V
-
.