XE8000EV120 Semtech, XE8000EV120 Datasheet - Page 66

• Manufacturer Part Number: XE8000EV120
• Description: BOARD EVAL FOR SX8722I070TRLF
• Manufacturer: Semtech
• Series: ZoomingADC™r

Specifications of XE8000EV120

• Number Of Adc's: 1
• Number Of Bits: 16
• Data Interface: I²C
• Inputs Per Adc: 7 Single or 4 Differential
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 125°C
• Utilized Ic / Part: SX8722
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: XM8000EV120; XM8000EV120

and throughput is then simply 1/T
a sampling frequency of 300 kHz (SET_OSR = "101", SET_NELC = "01", f
Table 53, the conversion time is 515 sampling periods, or 1.71ms. This corresponds to a throughput of 582Hz in continuous-
time mode. The plot of figure below illustrates the classic trade-off between resolution and conversion time.
ACS - Revision 4.2
©2008 Semtech Corp.
ADVANCED COMMUNICATIONS & SENSING
Table 53. Normalized conversion time (T
Table 54. Resolution vs. normalized conversion time for different SET_NELC[1:0]
SET_OSR [2:0]
October 2008
CONV
000
001
010
011
100
101
110
111
. For example, consider an over-sampling ratio of 256, 2 elementary conversions, and
16.0
14.0
12.0
10.0
8.0
6.0
4.0
10.0
00
Normalized Conversion Time - T
1026
(normalized to sampling period 1/f
130
258
514
00
10
18
34
66
01
10
CONV
100.0
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11
SET_NELC
1027
2051
x f
131
259
515
01
19
35
67
S
SET_NELC
) vs. SET_OSR[2:0] and SET_NELC[1:0]
1000.0
High gain acquisition for sensor interface
CONV
RC
1029
2053
4101
133
261
517
*f
10
37
69
= 1.2MHz, and FIN = "00"). In this case, using
S
[-]
10000.0
S
)
1033
2057
4105
8201
137
265
521
73
11
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SX8722