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参数资料
| 型号： | AD7740YRMZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 5/11页 |
| 文件大小： | 144K |
| 描述： | IC CONVERTER VOLT TO FREQ 8MSOP |
| 标准包装： | 3,000 |
| 类型： | 电压至频率 |
| 频率 - 最大： | 1MHz |
| 全量程： | ±50ppm/°C |
| 线性： | ±0.012% |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 带卷 (TR) |
AD7740
REV. A
5
TERMINOLOGY
INTEGRAL NONLINEARITY
For the VFC, Integral Nonlinearity (INL) is a measure of the maxi-
mum deviation from a straight line passing through the actual
endpoints of the VFC transfer function. The error is expressed in
% of the actual frequency span:
Frequency Span = FOUT(max) FOUT(min)
OFFSET ERROR
Ideally, the output frequency for 0 V input voltage is 10% of
f
CLKIN
in unbuffered mode. The deviation from this value referred
to the input is the offset error at BUF = 0. In buffered mode the
minimum output frequency (corresponding to 0.10 V minimum
input voltage) is 13.2% of f
CLKIN
at V
REF
= 2.5 V. The deviation
from this value referred to the input is the offset error at BUF = 1.
Offset error is expressed in mV.
GAIN ERROR
This is a measure of the span error of the VFC. The gain is the
scale factor that relates the input VIN to the output FOUT.
The gain error is the deviation in slope of the actual VFC transfer
characteristic from the ideal expressed as a percentage of the full-
scale span. See Figure 2.
OFFSET ERROR DRIFT
This is a measure of the change in Offset Error with changes in
temperature. It is expressed in 礦/癈.
GAIN ERROR DRIFT
This is a measure of the change in Gain Error with changes in
temperature. It is expressed in (ppm of span)/癈.
POWER SUPPLY REJECTION RATIO (PSRR)
This indicates how the apparent input voltage of the VFC is
affected by changes in the supply voltage. The input voltage is
kept constant at 2 V, V
REF
is 2.5 V and the VDD supply is varied
10% at 3.3 V and ?% at 5 V. The ratio of the apparent change
in input voltage to the change in VDD is measured in dBs.
0
REFIN
WITH OFFSET
ERROR ONLY
IDEAL
GAIN ERROR
OUTPUT
FREQUENCY
FOUT
0.9 f
CLKIN
OFFSET
ERROR
WITH OFFSET
ERROR AND
GAIN ERROR
INPUT
VOLTAGE
VIN
0.1
f
CLKIN
Figure 2. Offset and Gain
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7740YRMZ-REEL7 | 功能描述:IC CONVERTER VOLT TO FREQ 8MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - V/F 和 F/V 转换器 系列:- 标准包装:1 系列:- 类型:频率至电压 频率 - 最大:10kHz 全量程:- 线性:±0.3% 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOIC 包装:Digi-Reel® 其它名称:LM2917MX-8/NOPBDKR |
| AD7740YRT | 制造商:AD 制造商全称:Analog Devices 功能描述:3 V/5 V Low Power, Synchronous Voltage-to-Frequency Converter |
| AD7740YRT-REEL | 制造商:Analog Devices 功能描述: |
| AD7740YRT-REEL7 | 制造商:Rochester Electronics LLC 功能描述:LOW COST SMALL SYNCHRONOUS VFC ADC. I.C. - Tape and Reel 制造商:Analog Devices 功能描述: |
| AD7740YRTZ-REEL7 | 功能描述:IC CONVERTER VOLT-FREQ SOT23-8 RoHS:是 类别:集成电路 (IC) >> PMIC - V/F 和 F/V 转换器 系列:- 标准包装:1 系列:- 类型:频率至电压 频率 - 最大:10kHz 全量程:- 线性:±0.3% 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOIC 包装:Digi-Reel® 其它名称:LM2917MX-8/NOPBDKR |
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