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| 型号： | AD7866ARU-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 24/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT 2CH DUAL 20TSSOP |
| 产品变化通告： | Product Discontinuance 27/Oct/2011 |
| 标准包装： | 1,000 |
| 位数： | 12 |
| 采样率（每秒）： | 1M |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 2 |
| 功率耗散（最大）： | 24mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 4 个单端，单极 |
| 配用： | EVAL-AD7866CBZ-ND - BOARD EVALUATION AD7866 |
REV. A
AD7866
–9–
Typical Performance Characteristics
FREQUENCY – kHz
0
–35
–115
0
500
100
SNR
–
dB
200
300
400
–55
–75
–95
50
150
250
350
450
4098 POINT FFT
f
SAMPLE = 1MSPS
fIN = 300kHz
SNR = 70.31dB
THD = –85.47dB
SFDR = –86.64dB
–15
TPC 1. Dynamic Performance
INPUT FREQUENCY – Hz
–61
–75
10k
1M
100k
SINAD
–
dB
–73
–63
–67
–69
–71
–65
TA = 25 C
VDD = VDRIVE = 2.7V
VDD = VDRIVE = 3.6V
VDD = VDRIVE = 5.25V
VDD = VDRIVE = 4.75V
TPC 2. SINAD vs. Input Frequency
AVDD RIPPLE FREQUENCY – Hz
0
–100
1k
PSRR
–
dB
10k
–90
–80
–70
–60
–50
–40
–30
–20
–10
100k
1M
100mV p-p SINE WAVE ON AVDD
2.5V EXT REFERENCE ON VREF
TA = 25 C
VDD = 2.7V
VDD = 5.25V
VDD = 4.75V
VDD = 3.6V
TPC 3a. PSRR vs. Supply Ripple Frequency,
without Supply Decoupling
AVDD RIPPLE FREQUENCY – Hz
0
–100
1k
PSRR
–
dB
10k
–90
–80
–70
–60
–50
–40
–30
–20
–10
100k
1M
100mV p-p SINE WAVE ON AVDD
2.5V EXT REFERENCE ON DCAPA, DCAPB
TA = 25 C
VDD = 2.7V
VDD = 5.25V
VDD = 4.75V
VDD = 3.6V
TPC 3b. PSRR vs. Supply Ripple Frequency,
without Supply Decoupling
PERFORMANCE CURVES
TPC 1 shows a typical FFT plot for the AD7866 at 1 MHz
sample rate and 300 kHz input frequency. TPC 2 shows the
signal-to-(noise + distortion) ratio performance versus input
frequency for various supply voltages while sampling at 1 MSPS
with an SCLK of 20 MHz.
TPCs 3a to 4b show the power supply rejection ratio versus
AVDD supply ripple frequency for the AD7866 under different
conditions. The power supply rejection ratio (PSRR) is defined
as the ratio of the power in the ADC output at full-scale fre-
quency f, to the power of a 100 mV sine wave applied to the
ADC AVDD supply of frequency fS:
PSRR dB
Pf Pf
S
() =
()
10 log
Pf = power at frequency f in ADC output, and PfS = power at
frequency fS coupled onto the ADC AVDD supply. Here, a 100 mV
peak-to-peak sine wave is coupled onto the AVDD supply while the
digital supply is left unaltered. TPCs 3a and 3b show the PSRR
of the AD7866 when there is no decoupling on the supply, while
TPCs 4a and 4b show the PSRR with decoupling capacitors
of 10
F and 0.1 F on the supply.
TPCs 5 and 6 show typical DNL and INL plots for the AD7866.
TPC 7 shows a graph of the total harmonic distortion versus
analog input frequency for various source impedances.
TPC 8 shows a graph of total harmonic distortion versus analog
input frequency for various supply voltages. See the Analog
Input section.
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相关代理商/技术参数 |
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| AD7866ARUZ | 功能描述:IC ADC 12BIT 2CH DUAL 20-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| AD7866ARUZ-REEL | 功能描述:IC ADC 12BIT 2CHAN DUAL 20TSSOP RoHS:是 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:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| AD7866ARUZ-REEL7 | 功能描述:IC ADC 12BIT 2CHAN DUAL 20TSSOP RoHS:是 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:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| AD7866BRU | 功能描述:IC ADC 12BIT 2CH DUAL 20-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 |
| AD7866BRU-REEL | 制造商:Analog Devices 功能描述:ADC Dual SAR 1Msps 12-bit Serial 20-Pin TSSOP T/R |
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