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参数资料
| 型号： | CS5524-ASZR |
| 厂商： | Cirrus Logic Inc |
| 文件页数： | 37/56页 |
| 文件大小： | 0K |
| 描述： | IC ADC 24BIT 4CH 24-SSOP |
| 标准包装： | 1,000 |
| 位数： | 24 |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 14.8mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 24-SSOP |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 4 个差分，单极；4 个差分，双极 |
| 配用： | 598-1012-ND - EVAL BOARD FOR CS5524 ADC |
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CS5521/22/23/24/28
42
DS317F8
1.6 Digital Filter
The CS5521/22/23/24/28 have eight different lin-
ear phase digital filters which set the output word
rates (OWRs) shown in Table 3. These rates as-
sume that XIN is 32.768 kHz. Each of the filters
has a magnitude response similar to that shown in
Figure 18. The filters are optimized to settle to full
accuracy every conversion and yield better than
80 dB rejection for both 50 and 60 Hz with output
word rates at or below 15.0 Sps.
The converter’s digital filters scale with XIN. For
example with an output word rate of 15 Sps, the fil-
ter’s corner frequency is typically 12.7 Hz using a
32.768 kHz
clock.
If
XIN
is
increased
to
65.536 kHz the OWR doubles and the filter’s cor-
ner frequency moves to 25.4 Hz.
1.7 Clock Generator
The CS5521/22/23/24/28 include a gate which can
be connected with an external crystal to provide the
master clock for the chip. The chips are designed to
operate using a low-cost 32.768 kHz “tuning fork”
type crystal. One lead of the crystal should be con-
nected to XIN and the other to XOUT. Lead lengths
should be minimized to reduce stray capacitance.
Note that the oscillator circuit will also operate
with a 100 kHz “tuning fork” type crystal.
The converters will operate with an external
(CMOS compatible) clock with frequencies up to
130 kHz (CS5521/23) or 200 kHz (CS5522/24/28).
detail
the
CS5521/23
and
CS5522/24/28’s performance (respectively) at in-
creased clock rates.
The 32.768 kHz crystal is normally specified as a
time-keeping crystal with tight specifications for
both initial frequency and for drift over tempera-
ture. To maintain excellent frequency stability,
these crystals are specified only over limited oper-
ating temperature ranges (i.e. -10° C to +60° C).
However,
applications
with
the
CS5521/22/23/24/28 don’t generally require such
tight tolerances.
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
0
Atte
nuati
on
(dB)
1
234
5
6
7
8
9
10
11 12
13
14
15
for OWR = 15.0 Sps
f1 = 47.5 Hz
f2 = 65.5 Hz
fS/2 = XIN/4
f1
f2
15 Sps
Figure 18. Filter Response (Normalized to Output Word
Rate = 15 Sps)
0.0004
0.0006
0.0008
0.001
0.0012
0.0014
0.0016
0.0018
0.002
30
50
70
90
110
130
XIN (kHz)
Li
n
e
ar
it
y
E
rr
o
r(
%
F
S
)
Figure 19. Typical Linearity Error for CS5521/23
0.0004
0.0005
0.0006
0.0007
0.0008
0.0009
0.001
0.0011
0.0012
0.0013
20
40
60
80
100 120 140 160 180 200
XIN (kHz)
Li
n
e
ar
it
y
Er
ro
r(
%
F
S
)
Figure 20. Typical Linearity Error for CS5522/24/28
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| CS5525-AS | 功能描述:模数转换器 - ADC 16-Bit Delta Sigma Multi-Range ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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