www.semtech.com/products/ Page 5 ADVANCED COMMUNICATIONS & SENSING DATASHEET SX8725C ZoomingADC for" />
參數(shù)資料
型號(hào): SX8725CWLTDT
廠商: Semtech
文件頁(yè)數(shù): 45/68頁(yè)
文件大小: 0K
描述: IC DAS ADC 16BIT I2C/SRL
標(biāo)準(zhǔn)包裝: 1
系列: ZoomingADC™
類型: 數(shù)據(jù)采集系統(tǒng)(DAS)
輸入類型: 差分
輸出類型: 數(shù)字
接口: I²C
安裝類型: 表面貼裝
封裝/外殼: 12-WDFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 12-MLPD-EP(4x4)
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: SX8725CWLTDTDKR
www.semtech.com/products/
Page 5
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
SX8725C
ZoomingADC for sensing data acquisition
Revision 1.01
January 2011
Semtech
2 Operating Conditions
Unless otherwise specified: VREF,ADC = VBATT, VIN = 0V, Over-sampling frequency fS = 250 kHz, PGA3 on with Gain = 1,
PGA1&PGA2 off, offsets GDOff2 = GDOff3 = 0. Power operation: normal (IbAmpAdc[1:0] = IbAmpPga[1:0] = '01').
For resolution n = 12 bits: OSR = 32 and NELCONV = 4.
For resolution n = 16 bits: OSR = 256 and NELCONV = 2.
Bandgap chopped at NELCONV rate. If VBATT < 4.2V, Charge Pump is forced on. If VBATT > 4.2V, Charge Pump is forced off.
.
Table 2.
Operating conditions limits
Parameter
Symbol
Comment/Condition
Min
Typ
Max
Unit
Power supply
VBATT
2.4
5.5
V
Operating temperature
TOP
-40
125
°C
Table 3.
Electrical Characteristics
Parameter
Symbol
Comment/Condition
Min
Typ
Max
Unit
CURRENT CONSUMPTION1
Active current, 5.5V
IOP55
16 b @ 250 Sample/s
ADC, fs = 125 kHz
250
350
μA
16 b @ 1kSample/s
PGA3 + ADC, fs = 500 kHz
700
900
16 b + gain 1000 @ 1kSample/s
PGA3,2,1 + ADC, fs = 500 kHz
1000
1350
Active current, 3.3V
IOP33
16 b @ 250 Sample/s
ADC, fs = 125 kHz
150
μA
16 b @ 1 kSample/s
PGA3 + ADC, fs = 500 kHz
300
16 b + gain 1000 @ 1kSample/s
PGA3,2,1 + ADC, fs = 500 kHz
850
Sleep current
ISLEEP
@25°C
75
nA
up to 85°C
100
@125°C
150
200
TIME BASE
Max ADC Over-Sampling frequency
fSmax
@25°C
425
500
575
kHz
ADC Over-Sampling frequency drift
fST
0.15
% / °C
DIGITAL I/O
Input logic high
VIH
0.7
VBATT
Input logic low
VIL
0.3
VBATT
Output logic high
VOH
IOH < 4 mA
VBATT-0.4
V
Output logic low
VOL
IOL < 4 mA
0.4
V
SCL and SDA I/O
Input logic high
VIH
0.7
VBATT
Not
Recommended
for
New
Designs
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