AS1542-BTSU ams, AS1542-BTSU Datasheet - Page 24

• Manufacturer Part Number: AS1542-BTSU
• Description: Analog to Digital Converters - ADC
• Manufacturer: ams

Specifications of AS1542-BTSU

• Rohs: yes
• Number Of Channels: 16/8
• Architecture: SAR
• Conversion Rate: 1 MSPs
• Resolution: 12 bit
• Input Type: Single-Ended/Differential
• Snr: 71 dB
• Interface Type: QSPI, SPI
• Operating Supply Voltage: 2.7 V to 5.25 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-28
• Maximum Power Dissipation: 18.4 mW
• Minimum Operating Temperature: - 40 C
• Number Of Converters: 1

AS1542
Data Sheet - D e t a i l e d D e s c r i p t i o n
The Power vs. Throughput Rate graph in the Typical Operating Characteristics section shows the power vs. through-
put rate when using the auto shutdown mode and auto standby mode with 5V supplies (similar power calculations can
be done at 3V, althought the power is decreased even more when using 3V supplies).
VDRIVE
V
AS1542 were operated with a V
dynamic performance with a V
Note: V
External Reference
An external reference source should be connected directly to the pin V
voltage can reach from 1V to V
shown in
analog input range depends on V
log Input Configuration on page
function and will add to the specified full scale errors of the device.
Note: A capacitor of at least 0.1µF should be placed on pin REFIN.
www.austriamicrosystems.com
DRIVE
controls the serial interface voltage. V
DRIVE
Figure 9 on page
must not exceed V
9. However for specified performance the reference voltage has to stay at 2.5V ±1%. The
DD
DD
DD
15). Errors in the reference source will result in gain errors in the AS1542 transfer
REFIN
of 5V while still being able to interface to 3V processors.
. The correlation between performance of the AS1542 and the reference voltage is
DD
of 5V, pin V
by more than 0.3V
and the setting of bit RANGE and bit SE/FDN of the control register
DRIVE
DRIVE
allows easy interface to 3V and 5V processors. For example, if the
could be powered from a 3V supply. The AS1542 has better
Revision 1.00
(see Absolute Maximum Ratings on page 4)
REFIN
of the AS1542. The external reference
(see Ana-
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