sx8724s Semtech Corporation, sx8724s Datasheet - Page 6

• Manufacturer Part Number: sx8724s
• Description: Zoomingadc For Sensing Data Acquisition
• Manufacturer: Semtech Corporation

Revision 1.0
© Semtech
Table 3.
1.
Table 4.
ADVANCED COMMUNICATIONS & SENSING
Parameter
Input leakage current
VREF: Internal Bandgap Reference
Absolute output voltage
Variation over Temperature
Total Output Noise
Parameter
ANALOG INPUT CHARACTERISTICS
Differential Input Voltage Range
V
PROGRAMMABLE GAIN AMPLIFIER
Total PGA Gain
PGA1 Gain
PGA2 Gain
PGA3 Gain
Gain Settings Precision (each stage)
Gain Temperature Dependence
PGA2 Offset
PGA3 Offset
Offset Settings Precision
(PGA2 or PGA3)
Offset Temperature Dependence
Input Impedance on ADC
Input Impedance on PGA1
(see
Input Impedance on PGA2
Input Impedance on PGA3
IN
= V
section 11.1, page
INP
The device can be operated in either active or sleep states. The Sleep state is complete shutdown, but the active state can have a variety of
different current consumptions depending on the settings. Some examples are given here: The Sleep state is the default state after
power-on-reset. The chip can then be placed into an active state after a valid I2C communication is received.
-V
INN
Electrical Characteristics
ZoomingADC Specifications
49)
February 2011
Symbol
Symbol
GD
GD
Z
Z
Z
Z
GD
I
V
LeakIn
V
INPGA1
INPGA2
INPGA3
GD
GD
GD
V
INADC
BGN
BGT
BG
OFF2
OFF3
TOT
1
2
3
Digital input mode,
no pull-up or pull-down
V
V
V
Gain=1, OSR=32, V
Gain=100, OSR=32, V
Gain=1000, OSR=32, V
Note 1
(see
(see
Step = 1/12 V/V
(see
Gain ≥ 1
Step = 0.2 V/V
(see
Step = 1/12 V/V
(see
Note 2
Gain = 1.
Gain = 10.
Gain = 1.
Gain = 10.
Gain = 1.
Gain = 10.
BATT
BATT
BATT
Table 10, page
Table 11, page
Table 12, page
Table 11, page
Table 12, page
> 3V
> 3V, over Temperature
> 3V
Comment/Condition
Page 6
Note 3
Note 3
Note 3
Note 3
Note 3
Note 3
Condition
REF
22)
22)
22)
22)
22)
REF
=5V.
REF
=5V
ZoomingADC for sensing data acquisition
=5V
Note 1
-63/12
-2.42
-24.2
-2.42
-100
1/12
1/12
1.19
Min
Min
-1.5
500
900
250
500
125
500
125
-3
-1
-3
1
1
1150
1000
Typ
1.22
Typ
±
±
350
270
780
190
±
±
0.5
0.5
5
5
SX8724S
www.semtech.com
+63/12
127/12
+2.42
+24.2
+2.42
1000
Max
+1.5
Max
1.25
100
DATASHEET
10
10
+3
+1
+3
1
ppm / °C
ppm / °C
mVrms
Unit
Unit
V/V
V/V
V/V
V/V
V/V
V/V
mV
mV
nA
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
%
%
%
V
V