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參數(shù)資料
| 型號(hào)： | 458J |
| 廠(chǎng)商： | Electronic Theatre Controls, Inc. |
| 英文描述： | High Accuracy, 100kHz and 1MHz Voltage to Frequency Converters |
| 中文描述： | 高精度，100kHz和1MHz的電壓頻率轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 1/1頁(yè) |
| 文件大?。?/td> | 52K |
| 代理商： | 458J |
GENERAL DESCRIPTION
Models 458 and 460 are high performance, differential input, voltage
to frequency modular converters designed for analog to digital
applications requiring accuracy and fast data conversion. Model 458
offers a l00kHz full scale frequency, guaranteed nonlinearity of
±0.01% maximum over five decades (1Hz to 100kHz) of operation
and guaranteed low maximum gain drift in three model selections;
model 458L: 5ppm/
°C max; model 458K: 10ppm/°C max; and model
458J: 20ppm/
°C max. Model 460 offers a 1MHz full scale frequency,
guaranteed maximum nonlinearity of ±0.015% over six decades (1Hz
to 1MHz) of operation and guaranteed low maximum gain drift in
three selections; model 460L: 15ppm/
°C max; model 460K:
25ppm/
°C max; and model 460J: 50ppm/°C max. Model 460L is the
industry's first 1MHz V/F converter to offer 15ppm/
°C maximum gain
drift.
The differential input stage of models 458 and 460 provide the
versatility of either direct interface to off-ground 0 to +11V input
signals with common mode voltages (CMV) to ±10V, as well as
ground referenced positive, 0 to +11V or negative, 0 to -11V signals.
Both models also accept positive current signals: 0 to +0.5mA, model
458; 0 to +1mA, model 460 for current to frequency (I/F) applications.
The rated performance of both models 458 and 460 is achieved
without the need for external components or adjustments. Optional
adjustments are available for trimming full scale frequency and the
input offset voltage.
WHERE TO USE MODELS 458 AND 460
The combination of low gain drift, low nonlinearity and the versatility
of a differential input with both high speed (100kHz/1MHz) models,
offer excellent solutions to a wide variety of demanding applications;
in high speed remote data acquisition systems - two wire data
transmission over long wires; in 5 digit DVM's - featuring high
resolution A/D conversion, monotonic performance, no missing codes
and high noise rejection; in strain gage bridge weighing applications -
accurate ratiometric measurements over wide dynamic range.
DESIGN APPROACH - PRECISION CHARGE BALANCE
Models 458 and 460 incorporate a superior charge balance design that
result in high linearity and temperature stability - see Figure 1. Both
models accept unipolar, single-ended voltage or current input signals
directly. By offsetting the input using the current terminal, models
458 and 460 will accept bipolar input voltages up to ±5V.
Information furnished by Intronics is believed to be accurate and reliable. However, no
responsibility is assumed by Intronics for its use; nor for any infringements of patents or
other rights of third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of Intronics.
FEATURES
High Stability: 5ppm/
°C max, Model 458L
15ppm/
°C max, Model 460L
Low Nonlinearity: 100ppm max, Model 458
150ppm max, Model 460
Versatility: Differential Input Stage
Voltage and Current Inputs
Floating Inputs:
±10V CMV
Wide Dynamic Range: 6 Decades, Model 460
TTL/DTL Compatible Output
APPLICATIONS
Fast Analog-to-Digital Converter
High Resolution Optical Data Link
Ratiometric Measurements
2-Wire High Noise Immunity Digital Transmission
Long Term Precision Integrator
1400 Providence Highway, Building #2
Norwood, MA 02062
Phone (781) 551-5500
FAX (781) 551-5555
www.intronicspower.com
High Accuracy, 100kHz and 1MHz
Voltage to Frequency Converters
Models 458 and 460
MODEL
FULL SCALE OUTPUT
R1
R2
R3
458
100kHz
20K
10K
4.7K
460
1Mhz
10K
2K
910
Figure 1. Block Diagram – Models 458,560
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