High Speed 14-Bit 1MHz Sampling A/D Converter
Description
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ADC3214
High Speed, 14-Bit, 1 MHz, Sampling A/D Converter
With Built-in Sample-and-Hold Amplifier
Introduction
The ADC3214 is a 14-bit, 1 MHz A/D converter with a built-in sampleand-hold amplifier.
It was designed for use in applications requiring high speed and high resolution front ends, such as ATE, medical imaging, radar, communications, and analytical instrumentation.
The ADC3214 is a cost-effective solution for both time and frequency domain applications.
It is capable of digitizing a 500 kHz signal at a 1 MHz rate with a guarantee of no missing codes.
Signal-to-noise ratio is 76 dB at input frequencies from DC to 100 kHz.
With a 1 MHz sampling rate and a full-scale step response to 14-bit accuracy of one conversion, this sampling A/D converter is ideally suited for applications with multiplexed signal sources.
The ADC3214 utilizes the latest surface-mount technologies to produce a cost-effective, high-performance part in a 2" x 3" fully shielded package.
It is designed around a two-pass, subranging architecture that integrates a low distortion sample-and-hold amplifier, precision voltage reference, all the necessary timing circuitry and tri-state CMOS/TTL-compatible outputs for ease of system integration.
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Features
u u u u u u u u 14-Bit Resolution 1 MHz Throughput Rate Reduced Cost Reduced Size No Missing Codes: 0°C to +60°C Signal-to-Noise Ratio: 76 dB Peak Distortion: –82 dB @ 100 kHz Total Harmonic Distortion: –80 dB @ 100 kHz Ease of Use Built-In S/H Amplifier TTL Compatibility High Input Impedance (100 MΩ)
Signal In
S/H Amplifier P1 P2
+15V Ana.
Rtn.
–15V +5V Dig.
Rtn.
u u u u
Range 1 Range 2 S/H Out A/D In Scaling & Offset Circuit
Applications
8-Bit ADC ADC Clk.
Ref.
L o g i c
Ext.
Off Adj.
Ext.
Gain Adj.
+Ref.
Out Ref.
Ckt.
B1-B14
∑
Ref.
4-Bit Linear DAC
O/U Flow EOC
Trigger Enable
u u u u u u u u
Radar Analytical Instrumentation Spectroscopy Digital Telecommunications Automatic Test Equipment Hi...
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