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参数资料
| 型号： | AD7792BRUZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 14/33页 |
| 文件大小： | 0K |
| 描述： | IC ADC 16BIT 3CH LP 16-TSSOP |
| 标准包装： | 2,500 |
| 位数： | 16 |
| 采样率（每秒）： | 500 |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 2.5mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 3 个差分，单极；3 个差分，双极 |
| 配用： | EVAL-AD7792EBZ-ND - BOARD EVALUATION FOR AD7792 |
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AD7792/AD7793
Rev. B | Page 20 of 32
ADC CIRCUIT INFORMATION
OVERVIEW
The AD7792/AD7793 are low power ADCs that incorporate a
∑-Δ modulator, a buffer, reference, in-amp, and an on-chip
digital filter intended for the measurement of wide dynamic
range, low frequency signals such as those in pressure
transducers, weigh scales, and temperature measurement
applications.
The part has three differential inputs that can be buffered or
unbuffered. The device can be operated with the internal 1.17 V
reference, or an external reference can be used. Figure 12 shows
the basic connections required to operate the part.
048
55-
012
DOUT/RDY
DIN
SCLK
CS
DVDD
SERIAL
INTERFACE
AND
CONTROL
LOGIC
Σ-Δ
ADC
AD7792/AD7793
AIN2(+)
REFIN(+)
REFIN(–)
AIN2(–)
AVDD
GND
MUX
BAND GAP
REFERENCE
INTERNAL
CLOCK
CLK
GND
AVDD
IN-AMP
BUF
REFIN(+) REFIN(–)
VBIAS
AIN1(+)
AIN1(–)
R
THERMOCOUPLE
JUNCTION
C
RREF
IOUT2
Figure 12. Basic Connection Diagram
The output rate of the AD7792/AD7793 (fADC) is user-program-
mable. The allowable update rates, along with their corresponding
settling times, are listed in Table 16. Normal mode rejection is
the major function of the digital filter. Simultaneous 50 Hz and
60 Hz rejection is optimized when the update rate equals
16.7 Hz or less as notches are placed at both 50 Hz and 60 Hz
with these update rates. See Figure 14.
The AD7792/AD7793 use slightly different filter types,
depending on the output update rate so that the rejection of
quantization noise and device noise is optimized. When the
update rate is from 4.17 Hz to 12.5 Hz, a Sinc3 filter, along with
an averaging filter, is used. When the update rate is from
16.7 Hz to 39 Hz, a modified Sinc3 filter is used. This filter
provides simultaneous 50 Hz/60 Hz rejection when the update
rate equals 16.7 Hz. A Sinc4 filter is used when the update rate
is from 50 Hz to 242 Hz. Finally, an integrate-only filter is used
when the update rate equals 470 Hz.
different filter types for several update rates.
0
–20
–40
–60
–80
–100
0
120
100
80
60
40
20
04
85
5-
01
8
FREQUENCY (Hz)
(dB
)
Figure 13. Filter Profile with Update Rate = 4.17 Hz
0
–20
–40
–60
–80
–100
0
200
180
160
140
120
100
80
60
40
20
04
85
5-
0
19
FREQUENCY (Hz)
(d
B
)
Figure 14. Filter Profile with Update Rate = 16.7 Hz
0
–20
–40
–60
–80
–100
0
3000
2500
2000
1500
1000
500
04
85
5-
0
20
FREQUENCY (Hz)
(d
B
)
Figure 15. Filter Profile with Update Rate = 242 Hz
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相关代理商/技术参数 |
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|---|---|
| AD7792BRUZ-REEL1 | 制造商:AD 制造商全称:Analog Devices 功能描述:3-Channel, Low Noise, Low Power, 16-/24-Bit ?￡-?? ADC with On-Chip In-Amp and Reference |
| AD7793 | 制造商:AD 制造商全称:Analog Devices 功能描述:Low Power, 16/24-Bit Sigma-Delta ADC with Low-Noise In-Amp and Embedded Reference |
| AD7793B | 制造商:AD 制造商全称:Analog Devices 功能描述:Low Power, 16/24-Bit Sigma-Delta ADC with Low-Noise In-Amp and Embedded Reference |
| AD7793BRU | 功能描述:IC ADC 24BIT 3CH LP 16-TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| AD7793BRU-REEL | 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 470sps 24-bit Serial 16-Pin TSSOP T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 0.47KSPS 24BIT SERL 16TSSOP - Tape and Reel |
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