參數(shù)資料
型號： AD7194BCPZ-REEL7
廠商： Analog Devices Inc
文件頁數(shù)： 36/57頁
文件大?。?/td> 0K
描述： IC ADC 24BIT SPI 4.8KHZ 32LFCSP
標準包裝： 1,500
位數(shù)： 24
采樣率（每秒）： 4.8k
數(shù)據(jù)接口： DSP，MICROWIRE?，QSPI?，串行，SPI?
轉(zhuǎn)換器數(shù)目： 1
電壓電源： 模擬和數(shù)字
工作溫度： -40°C ~ 105°C
安裝類型： 表面貼裝
封裝/外殼： 32-WFQFN 裸露焊盤，CSP
供應商設備封裝： 32-LFCSP-WQ（5x5）
包裝： 帶卷 (TR)
輸入數(shù)目和類型： 8 個差分，單極；8 個差分，雙極；16 個偽差分，單極；16 偽差分，雙極
AD7194
Data Sheet
Rev. A | Page 40 of 56
When the analog input is constant or a channel change occurs,
valid conversions are available at a constant output data rate.
When conversions are being performed on a single channel and
a step change occurs on the analog input, the ADC continues to
output fully settled conversions if the step change is synchronized
with the conversion process. If the step change is asynchronous,
one conversion is output from the ADC, which is not completely
settled (see Figure 30).
ANALOG
INPUT
ADC
OUTPUT
FULLY
SETTLED
1/
fADC
08566-
029
Figure 30. Sinc4 Zero Latency Operation
Table 29 shows examples of output data rate and the corres-
ponding FS values.
Table 29. Examples of Output Data Rates and the
Corresponding Settling Time (Zero Latency)
FS[9:0]
Output Data Rate (Hz)
Settling Time (ms)
480
2.5
400
96
12.5
80
15
66.6
Sinc4 50 Hz/60 Hz Rejection
Figure 31 shows the frequency response of the sinc4 filter when
FS[9:0] is set to 96 and the master clock is 4.92 MHz. With zero
latency disabled, the output data rate is equal to 50 Hz. With
zero latency enabled, the output data rate is 12.5 Hz. The sinc4
filter provides 50 Hz (±1 Hz) rejection in excess of 120 dB
minimum, assuming a stable master clock.
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
25
50
75
100
125
150
FREQUENCY (Hz)
FI
L
T
E
R
G
AI
N
(
d
B)
08566-
030
Figure 31. Sinc4 Filter Response (FS[9:0] = 96)
Figure 32 shows the frequency response when FS[9:0] is
programmed to 80 and the master clock is equal to 4.92 MHz.
The output data rate is 60 Hz when zero latency is disabled and
15 Hz when zero latency is enabled. The sinc4 filter provides
60 Hz (±1 Hz) rejection of 120 dB minimum, assuming a stable
master clock.
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
30
60
90
120
150
FREQUENCY (Hz)
FI
L
T
E
R
G
AI
N
(
d
B)
08566-
031
Figure 32. Sinc4 Filter Response (FS[9:0] = 80)
Simultaneous 50 Hz and 60 Hz rejection is obtained when
FS[9:0] is programmed to 480 and the master clock equals
4.92 MHz. The output data rate is 10 Hz when zero latency is
disabled and 2.5 Hz when zero latency is enabled. The sinc4
filter provides 50 Hz (±1 Hz) and 60 Hz (±1 Hz) rejection of
120 dB minimum, assuming a stable master clock.
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
30
60
90
120
150
FREQUENCY (Hz)
FI
L
T
E
R
G
AI
N
(
d
B)
08566-
032
Figure 33. Sinc4 Filter Response (FS[9:0] = 480)
Simultaneous 50 Hz/60 Hz rejection can also be achieved using
the REJ60 bit in the mode register. When FS[9:0] is set to 96
and REJ60 is set to 1, notches are placed at 50 Hz and 60 Hz.
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相關代理商/技術參數(shù)
參數(shù)描述
AD7195 制造商:AD 制造商全稱:Analog Devices 功能描述:4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA and AC Excitation
AD7195BCPZ 功能描述:IC AFE 24BIT 4.8K 32LFSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模擬前端 (AFE) 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 位數(shù):- 通道數(shù):2 功率（瓦特）:- 電壓 - 電源，模擬:3 V ~ 3.6 V 電壓 - 電源，數(shù)字:3 V ~ 3.6 V 封裝/外殼:32-VFQFN 裸露焊盤 供應商設備封裝:32-QFN（5x5） 包裝:帶卷 (TR)
AD7195BCPZ 制造商:Analog Devices 功能描述:IC ADC 24BIT 4.8KSPS CSP-32
AD7195BCPZ-RL 功能描述:IC AFE 24BIT 4.8K 32LFSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模擬前端 (AFE) 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 位數(shù):- 通道數(shù):2 功率（瓦特）:- 電壓 - 電源，模擬:3 V ~ 3.6 V 電壓 - 電源，數(shù)字:3 V ~ 3.6 V 封裝/外殼:32-VFQFN 裸露焊盤 供應商設備封裝:32-QFN（5x5） 包裝:帶卷 (TR)
AD7195BCPZ-RL7 功能描述:IC AFE 24BIT 4.8K 32LFSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模擬前端 (AFE) 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 位數(shù):- 通道數(shù):2 功率（瓦特）:- 電壓 - 電源，模擬:3 V ~ 3.6 V 電壓 - 電源，數(shù)字:3 V ~ 3.6 V 封裝/外殼:32-VFQFN 裸露焊盤 供應商設備封裝:32-QFN（5x5） 包裝:帶卷 (TR)
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