Datasheet

-0.35
-0.3
-0.25
-0.2
-0.15
-0.1
-0.05
0
2 2.5 3 3.5 4 4.5 5
V -ReferenceVoltage-V
ref
OffsetError-mV
+VBD=2.7V,
+VA =5V,
f =500KSPS,
T =30°C
s
A
-0.5
-0.45
-0.4
-0.35
-0.3
-0.25
-0.2
4.5 4.75 5 5.25 5.5
+VA -SupplyVoltage-V
OffsetError-mV
+VBD=2.7V,
V =4.096V,
f =500KSPS,
T =30 C
ref
s
A
°
0
0.0005
0.001
0.0015
0.002
0.0025
0.003
0.0035
0.004
0.0045
0.005
4.5 4.75 5 5.25 5.5
+VA -SupplyVoltage-V
+VBD=2.7V,
V =4.096V,
f =500KSPS,
T =30 C
ref
s
A
°
GainError-%FSR
1
2
3
4
5
10
9
8
7
6
REFIN
+VA
IN+
IN-
GND
+VBD
SDI
SCLK
SDO
CONVST
MSOP PACKAGE
(TOP VIEW)
1
2
3
4
5
10
9
8
7
6
(TOP VIEW)
SONPACKAGE
REFIN
+VA
IN+
IN-
GND
+VBD
SDI
SCLK
SDO
CONVST
ADS8319
www.ti.com SLAS600A –MAY 2008–REVISED SEPTEMBER 2013
PIN ASSIGNMENTS
Terminal Functions
TERMINAL
I/O DESCRIPTION
NO. NAME
ANALOG PINS
1 REFIN I Reference (positive) input. Decouple with GND pin using 0.1-μF bypass capacitor and 10-μF storage
capacitor.
3 +IN I Noninverting analog signal input
4 –IN I Inverting analog signal input. Note this input has a limited range of ±0.1 V, and typically it is grounded at the
input decoupling capacitor.
I/O PINS
Convert input. It also functions as the CS input in 3-wire interface mode. Refer to Description and Timing
6 CONVST I
Diagrams sections for more details.
7 SDO O Serial data output.
8 SCLK I Serial I/O clock input. Data (on SDO o/p) is synchronized with this clock.
9 SDI I Serial data input. The SDI level at the start of a conversion selects the mode of operation such as CS or daisy
chain mode. It also serves as the CS input in 4-wire interface mode. Refer to Description and Timing
Diagrmas sections for more details.
POWER SUPPLY PINS
2 +VA – Analog power supply. Decoupled with GND pin.
5 GND – Device ground. Note this is a common ground pin for both analog power supply (+VA) and digital I/O supply
(+VBD).
10 +VBD – Digital I/O power supply. Decouple with GND pin.
TYPICAL CHARACTERISTICS
OFFSET ERROR GAIN ERROR OFFSET ERROR
vs vs vs
SUPPLY VOLTAGE SUPPLY VOLTAGE REFERENCE VOLTAGE
Figure 3. Figure 4. Figure 5.
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