AS1419A AUSTIN [Austin Semiconductor], AS1419A Datasheet - Page 7

• Manufacturer Part Number: AS1419A
• Description: 14 Bit, 800ksps Sampling A/D Converter with Shutdown
• Manufacturer: AUSTIN [Austin Semiconductor]

TYPICAL PERFORMANCE CHARACTERISTICS (cont.)
TEST CIRCUITS
PIN FUNCTIONS
+AIN (Pin 1): ±2.5V Positive Analog Input.
–AIN (Pin 2): ±2.5V Negative Analog Input.
VREF (Pin 3): 2.5V Reference Output. Bypass to AGND with
1µF.
REFCOMP (Pin 4): 4.06V Reference Output. Bypass to AGND
with 10μF tantalum in parallel with 0.1µF or 10µF ceramic.
AGND (Pin 5): Analog Ground.
D13 to D6 (Pins 6 to 13): Three-State Data Outputs. The
output format is 2’s complement.
DGND (Pin 14): Digital Ground for Internal Logic. Tie to AGND.
D5 to D0 (Pins 15 to 20): Three-State Data Outputs. The
output format is 2’s complement.
SHDN\ (Pin 21): Power Shutdown Input. Low selects
shutdown. Shutdown mode selected by CS\. CS\ = 0 for nap
mode and CS\ = 1 for sleep mode.
RD\ (Pin 22): Read Input. This enables the output drivers when
CS\ is low.
AS1419 & AS1419A
Rev. 1.5 08/09
Load Circuit for Access timings
Austin Semiconductor, Inc.
7
CONVST\ (Pin 23): Conversion Start Signal. This active low
signal starts a conversion on its falling edge.
CS\ (Pin 24): Chip Select. The input must be low for the ADC to
recognize CONVST\ and RD\ inputs. CS\ also sets the
shutdown mode when SHDN\ goes low. CS\ and SHDN\ low
select the quick wake-up nap mode. CS\ high and SHDN\ low
select sleep mode.
BUSY\ (Pin 25): The BUSY\ output shows the converter
status. It is low when a conversion is in progress. Data valid on
the rising edge of BUSY\.
V
10µF tantalum in parallel with 0.1µF or 10µF ceramic.
DV
AV
tantalum in parallel with 0.1µF or 10µF ceramic.
SS
DD
DD
(Pin 26): – 5V Negative Supply. Bypass to AGND with
Load Circuits for Output Float Delay
(Pin 28): 5V Positive Supply. Bypass to AGND with 10µF
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
(Pin 27): 5V Positive Supply. Short to Pin 28.
AS1419A
AS1419
ADC
ADC
ADC
ADC
ADC