参数资料
| 型号： | AD974BNZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 9/20页 |
| 文件大小： | 0K |
| 描述： | IC DAS 16BIT 4CH 200KSPS 28DIP |
| 标准包装： | 13 |
| 类型： | 数据采集系统（DAS） |
| 分辨率（位）： | 16 b |
| 采样率（每秒）： | 200k |
| 数据接口： | 串行 |
| 电压电源： | 模拟和数字 |
| 电源电压： | 4.75 V ~ 5.25 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 28-DIP（0.600"，15.24mm） |
| 供应商设备封装： | 28-PDIP |
| 包装： | 管件 |
| 配用： | EVAL-AD974CB-ND - BOARD EVAL FOR AD974 |
REV. A
AD974
–17–
TEMPERATURE – C
110
80
–75
150
–50
–25
0
25
50
75
100
125
105
100
95
90
85
–80
–110
–85
–90
–95
–100
–105
SFDR,
S/N
+
D
–
dB
SNRD
SFDR
THD
–
dB
Figure 20. AC Parameters vs. Temperature
DC CODE UNCERTAINTY
Ideally, a fixed dc input should result in the same output code
for repetitive conversions; however, as a consequence of un-
avoidable circuit noise within the wideband circuits of the ADC,
a range of output codes may occur for a given input voltage.
Thus, when a dc signal is applied to the AD974 input, and
10,000 conversions are recorded, the result will be a distribution
of codes as shown in Figure 21. This histogram shows a bell
shaped curve consistent with the Gaussian nature of thermal
noise. The histogram is approximately seven codes wide. The
standard deviation of this Gaussian distribution results in a code
transition noise of 1 LSB rms.
4000
0
–3
–2
–1
0
12
34
3500
2000
1500
1000
500
3000
2500
Figure 21. Histogram of 10,000 Conversions of a DC Input
POWER-DOWN FEATURE
The AD974 has analog and reference power-down capability
through the PWRD pin. When the PWRD pin is taken high,
the power consumption drops from a maximum value of
100 mW to a typical value of 50
W. When in the power-
down mode the previous conversion results are still available in
the internal registers and can be read out providing it has not
already been shifted out.
When used with an external reference, connected to the REF
pin and a 2.2
F capacitor, connected to the CAP pin, the
power-up recovery time is typically 1 ms. This typical value of
1 ms for recovery time depends on how much charge has de-
cayed from the external 2.2
F capacitor on the CAP pin and
assumes that it has decayed to zero. The 1 ms recovery time has
been specified such that settling to 16 bits has been achieved.
When used with the internal reference, the dominant time con-
stant for power-up recovery is determined by the external ca-
pacitor on the REF pin and the internal 4K impedance seen at
that pin. An external 2.2
F capacitor is recommended for the
REF pin.
CROSSTALK
The crosstalk between adjacent channels, nonadjacent channels
and worst-case adjacent channels is shown in Figures 22 to 24.
The worst-case crosstalk occurs between channels 1 and 2.
–80
–115
1
10
100
1000
–95
–100
–105
–110
–85
–90
10000
ACTIVE CHANNEL INPUT FREQUENCY – kHz
RESULTING
AMPLITUDE
ON
SELECTED
CHANNEL
(dB)
WITH
INPUT
GROUNDED
ADJACENT CHANNELS,
WORST PAIR
NONADJACENT
CHANNELS
Figure 22. Crosstalk vs. Input Frequency (kHz)
0
–130
12
–90
–100
–110
–120
–70
–80
FREQUENCY – kHz
dBFS
4
6
8
10
12
14
16
18
20
–60
–40
–50
–30
–10
–20
Figure 23. Adjacent Channel Crosstalk, Worst Pair
(8192 Point FFT; AIN 2 = 1.02 kHz, –0.1 dB; AIN 1 = AGND)
相关PDF资料 |
PDF描述 |
|---|---|
| VI-B53-MY-S | CONVERTER MOD DC/DC 24V 50W |
| AD7891YSZ-1 | IC DAS 12BIT 8CH 44-MQFP |
| MS27497E22A55S | CONN RCPT 55POS WALL MNT W/SCKT |
| VE-B33-IU | CONVERTER MOD DC/DC 24V 200W |
| VI-B4T-MY-S | CONVERTER MOD DC/DC 6.5V 50W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD974BR | 功能描述:IC DAS 16BIT 4CH 200KSPS 28-SOIC RoHS:否 类别:集成电路 (IC) >> 数据采集 - ADCs/DAC - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:数据采集系统（DAS） 分辨率（位）:16 b 采样率（每秒）:21.94k 数据接口:MICROWIRE?，QSPI?，串行，SPI? 电压电源:模拟和数字 电源电压:1.8 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| AD974BRS | 功能描述:IC DAS 16BIT 4CH 200KSPS 28-SSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - ADCs/DAC - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:数据采集系统（DAS） 分辨率（位）:16 b 采样率（每秒）:21.94k 数据接口:MICROWIRE?，QSPI?，串行，SPI? 电压电源:模拟和数字 电源电压:1.8 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| AD974BRS-RL7 | 功能描述:IC DAS 16BIT 4CH 200KSPS 28SSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - ADCs/DAC - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:数据采集系统（DAS） 分辨率（位）:16 b 采样率（每秒）:21.94k 数据接口:MICROWIRE?，QSPI?，串行，SPI? 电压电源:模拟和数字 电源电压:1.8 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| AD974BRSZ | 功能描述:IC DAS 16BIT 4CH 200KSPS 28-SSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - ADCs/DAC - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:数据采集系统（DAS） 分辨率（位）:16 b 采样率（每秒）:21.94k 数据接口:MICROWIRE?，QSPI?，串行，SPI? 电压电源:模拟和数字 电源电压:1.8 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| AD974BRZ | 功能描述:IC DAS 16BIT 4CH 200KSPS 28SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - ADCs/DAC - 专用型 系列:- 产品培训模块:Data Converter Basics 标准包装:1 系列:- 类型:电机控制 分辨率（位）:12 b 采样率（每秒）:1M 数据接口:串行，并联 电压电源:单电源 电源电压:2.7 V ~ 3.6 V，4.5 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:100-TQFP 供应商设备封装:100-TQFP（14x14） 包装:剪切带 (CT) 其它名称:296-18373-1 |
发布紧急采购，3分钟左右您将得到回复。