AS1539 EB austriamicrosystems, AS1539 EB Datasheet

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AS1539 EB

Manufacturer Part Number
AS1539 EB
Description
BOARD EVAL AS1539
Manufacturer
austriamicrosystems
Datasheets

Specifications of AS1539 EB

Number Of Adc's
1
Number Of Bits
10
Sampling Rate (per Second)
50k
Data Interface
I²C
Inputs Per Adc
8 Single Ended
Input Range
0 ~ VREF
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Utilized Ic / Part
AS1539
Lead Free Status / RoHS Status
Lead free by exemption / RoHS compliant by exemption
A S 1 5 3 9 / A S 1 5 4 1
8 / 4 - C h a n n e l , 1 0 - B i t I ² C A n a l o g - t o - D i g i ta l C o n v e r t e r
1 General Description
The AS1539/AS1541 are single-supply, low-power,
10-bit data acquisition devices featuring a serial I²C
interface and an 8-channel (AS1539) or 4-channel
(AS1541) multiplexer.
The analog-to-digital (A/D) converters features a sam-
ple-and-hold amplifier an internal asynchronous clock
and an internal reference.
The combination of an I
micropower consumption makes the AS1539 and
AS1541 ideal for applications requiring the A/D con-
verter to be close to the input source in remote locations
and for applications requiring isolation.
The device is available in a TSSOP-16 or TQFN 4x4 16-
pin package.
Figure 1. Block Diagram
www.austriamicrosystems.com
REF
IN/OUT
COM
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
8-Channel
MUX
2
C serial, 2-wire interface and
Sample/
Hold
Amp
CDAC
Revision 1.03
Successive Approximation Register
AS1539/AS1541
2 Key Features
3 Applications
The device is ideal for voltage-supply monitoring, iso-
lated data acquisition, transducer interfaces, battery-
operated systems, remote data acquisition or any other
analog-to-digital conversion application.
!
!
!
!
!
!
!
!
!
Comparator
Single Supply: 2.7 to 5.25V
8-Channel Multiplexer (AS1539)
4-Channel Multiplexer (AS1541)
Sampling Rate: 50kSPS
No Missing Codes
Internal Reference: 2.5V
High Speed I
<1.5µA Full Shutdown Current
TSSOP-16 or TQFN 4x4 16-pin Package
Buffer
2
C Interface at 3.4MHz
Reference
Internal
2.5V
Interface
Serial
SDA
SCL
A0
A1
GND
D a t a S h e e t
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Related parts for AS1539 EB

AS1539 EB Summary of contents

Page 1

... Figure 1. Block Diagram CH0 CH1 CH2 CH3 8-Channel MUX CH4 Sample/ Hold Amp CH5 CH6 CH7 COM REF IN/OUT www.austriamicrosystems.com 2 Key Features Single Supply: 2.7 to 5.25V ! ! 8-Channel Multiplexer (AS1539) ! 4-Channel Multiplexer (AS1541) ! Sampling Rate: 50kSPS No Missing Codes ! ! Internal Reference: 2. High Speed I C Interface at 3 ...

Page 2

... AS1541 Pin Name - 1:3,16 CH0:CH3 1:8 - CH0:CH7 REF www.austriamicrosystems.com SDA CH1 1 14 SCL CH2 CH3 3 11 COM N REF IN/OUT 9 GND Analog Input Channels Analog Input Channels GND Analog Ground Internal Reference/External Reference Input IN/OUT Analog Input Channel Common COM Slave Address Bit 0 ...

Page 3

... Parameter +V to GND DD Digital Input Voltage to GND θ Thermal Resistance JA Operating Temperature Range Storage Temperature Range Junction Temperature (T ) JMAX ESD Package Body Temperature www.austriamicrosystems.com may cause permanent damage to the device. These are stress ratings only, Min Max Units -0 -0.3 V 0.3 100 ° ...

Page 4

... Spurious-Free Dynamic Range Voltage Reference Output Range Internal Reference Drift Output Impedance Quiescent Current Voltage Reference Input Range Input Resistance Reference Input Current www.austriamicrosystems.com = -40 to +85ºC (unless otherwise specified). AMB Condition Positive input, negative input Positive input Negative Input Track Mode Hold Mode V = 2.5V, 1 LSB = 610µ ...

Page 5

... SETUPDATA T Data Hold Time HOLDDATA 1 SCL Rise Time T RISESCLK SCL Rise Time after 1 Repeated START Condition T RISESCLK1 and After an ACK Bit www.austriamicrosystems.com Condition 3mA sink current GND IL Straight binary Specified performance Full Power-Down Internal Ref. OFF, ADC Internal Ref. ON, ADC OFF Internal Ref ...

Page 6

... RISESDA 1 SDA Fall Time T FALLSDA STOP Condition Setup Time T SETUPSTOP 1. Guaranteed by design and characterized on sample base. Figure 3. Timing Diagram SDA t BUF t HOLDSTART LOW SCL START STOP www.austriamicrosystems.com Condition t HOLDSTART t HIGH t SETUPDATA SETUPSTART Repeated t HOLDDATA START Revision 1.03 Min Typ Max Unit ...

Page 7

... Digital Output Code Figure 8. Offset Error vs. Temperature 1,5 1 0,5 0 -0,5 -1 -1,5 -45 -30 - Temperature (°C) www.austriamicrosystems.com = 3.4MHz 4.7µ +25ºC (unless otherwise specified). REF AMB Figure 5. INL vs. Digital Output Code, Int. Reference 0,375 = 50ksps 0,25 0,125 0 -0,125 -0,25 -0,375 1024 0 Figure 7 ...

Page 8

... Temperature (°C) Figure 14. Gain Error vs. Supply Voltage 1,5 1 0,5 0 -0,5 -1 -1,5 2,7 3,2 3,7 4,2 Supply Voltage (V) www.austriamicrosystems.com Figure 11. Offset Matching vs. Supply Voltage 0,5 0,4 0,3 0,2 0,1 0 -0,1 -0,2 -0,3 -0,4 -0,5 4,7 5,2 2,7 3,2 Figure 13. Gain Matching vs. Temperature ...

Page 9

... FFT -40 -60 -80 -100 -120 -140 -160 -180 0 5000 10000 15000 20000 25000 Input Signal Frequency (kHz) www.austriamicrosystems.com Figure 17. Supply Current vs. Supply Voltage, PD=01 1000 800 600 400 200 0 4.7 5.2 2.7 3.2 Figure 19. Supply Current vs. Sampling Rate 1200 1000 800 ...

Page 10

... After the capacitor has been fully charged, there is no further input current. The amount of charge transfer from the analog source to the converter is a function of conversion rate. Figure 23. Reference circuit VIN + 10Ω - www.austriamicrosystems.com 0.1 to 2kΩ 10µF SDA ...

Page 11

... Acknowledge: Each receiving device, when addressed, is obliged to generate an acknowledge after the recep- tion of each byte. The master device must generate an extra clock pulse that is associated with this acknowledge www.austriamicrosystems.com 2 C bus. The bus must be controlled by a master device that generates the ...

Page 12

... Upon receiving the 10010 code, the appropriate device select bits, and the R/W bit, the slave device outputs an acknowledge signal on the SDA line. Command Byte The AS1539/AS1541 operation, including powerdown by a command byte (see Figure 26). Figure 26. Command Byte MSB SD www.austriamicrosystems.com 2 C bus. Depending upon the state of the R ...

Page 13

... Channel Selection Channel selection for the AS1539/AS1541 is made using a command byte Table 6. Channel Selection Bit Settings For the 4-channel AS1541 only combinations of CH0:CH3 applies. www.austriamicrosystems.com Description (see Command Byte on page 1 CH0 CH1 CH2 CH3 CH4 +IN – +IN – + –IN + –IN + – ...

Page 14

... From Slave to Master Where: A: Acknowledge (SDA Low) N: Not Acknowledge (SDA High) S: START Condition P: STOP Condition Sr: Repeated START Condition W: 0 (Write (Read) www.austriamicrosystems.com (see Command Byte on page 12) Initiating a Conversion. is returned in two bytes, where D9 is the MSB of the data word, and D0 is the ...

Page 15

... Read-Addressing Byte From Master to Slave From Slave to Master Where: A: Acknowledge (SDA Low) N: Not Acknowledge (SDA High) S: START Condition P: STOP Condition Sr: Repeated START Condition W: 0 (Write (Read) X: Dont Care www.austriamicrosystems.com Command Byte Typical Mode Read Sequence Settled Internal Reference ADC Sampling Mode ...

Page 16

... The ideal layout will include an analog ground plane dedicated to the converter and associated analog circuitry. Note: For additional information download the evaluation board application note on our website. www.austriamicrosystems.com 14. or Figure 29 on page 15 can then be used ...

Page 17

... Terminal numbers are for reference only. 7. Datums A and determined at datum plane H. 8. Dimensions D and E1 are to be determined at datum plane H. 9. This dimension applies only to variations with an even number of leads per side. 10. Cross section A determined at 0.10 to 0.25mm from the leadtip. www.austriamicrosystems.com Symbol Min 0. ...

Page 18

... Dimension b applies to metallized terminal and is measured between 0.15 and 0.30mm from terminal tip refers to the maximum number of terminals on D side. 7. Unilateral coplanarity zone applies to the exposed heat sink slug as well as the terminals. www.austriamicrosystems.com Symbol Max Notes D BSC 0 ...

Page 19

... Table 7. Ordering Information Model Marking AS1539-BTST AS1538 8-Channel, 10-Bit I²C Analog-to-Digital Converter AS1539-BTSU AS1538 8-Channel, 10-Bit I²C Analog-to-Digital Converter AS1541-BQFT AS1540 4-Channel, 10-Bit I²C Analog-to-Digital Converter www.austriamicrosystems.com Table 7. Description Delivery Form Tape and Reel Tape and Reel Revision 1.03 Package TSSOP-16 Tubes TSSOP-16 ...

Page 20

... The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the tech- nical data herein ...

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