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LINEAR凌力尔特芯片：

LTC1668 - LTC1668是16-Bit, 50Msps DAC

LTC1668是LINEAR凌力尔特公司的一款高速 DAC产品，LTC1668是LTC1668是16-Bit, 50Msps DAC，本站介绍了LTC1668的封装应用图解、特点和优点、功能等，并给出了与LTC1668相关的LINEAR元器件型号供参考。

LTC1668 - LTC1668是16-Bit, 50Msps DAC - 高速 DAC - 数据转换 - 凌力尔特

LTC1668 - 16-Bit, 50Msps DAC

LTC1668 - 16-Bit, 50Msps DAC - Linear Technology（凌力尔特）

功能描述

The LTC1666/LTC1667/LTC1668 are 12-/14-/16-bit, 50Msps differential current output DACs implemented on a high performance BiCMOS process with laser trimmed, thin-film resistors. The combination of a novel current-steering architecture and a high performance process produces DACs with exceptional AC and DC performance. The LTC1668 is the first 16-bit DAC in the marketplace to exhibit an SFDR (spurious free dynamic range) of 87dB for an output signal frequency of 1MHz.

Operating from ±5V supplies, the LTC1666/LTC1667/LTC1668 can be configured to provide full-scale output currents up to 10mA. The differential current outputs of the DACs allow single-ended or true differential operation. The 1V to 1V output compliance of the LTC1666/LTC1667/LTC1668 allows the outputs to be connected directly to external resistors to produce a differential output voltage without degrading the converter’s linearity. Alternatively, the outputs can be connected to the summing junction of a high speed operational amplifier, or to a transformer.

The LTC1666/LTC1667/LTC1668 are pin compatible and are available in a 28-pin SSOP and are fully specified over the industrial temperature range.

特点

50Msps Update Rate

Pin Compatible 12-Bit, 14-Bit and 16-Bit Devices

High Spectral Purity: 87dB SFDR at 1MHz fOUT

5pV-s Glitch Impulse

Differential Current Outputs

20ns Settling Time

Low Power: 180mW from ±5V Supplies

TTL/CMOS (3.3V or 5V) Inputs

Small Package: 28-Pin SSOP

应用

Cellular Base Stations

Multicarrier Base Stations

Wireless Communication

Direct Digital Synthesis (DDS)

xDSL Modems

Arbitrary Waveform Generation

Automated Test Equipment

Instrumentation

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LTC1668CG	SSOP-28	C	$16.05	$13.75
LTC1668CG#PBF	SSOP-28	C	$16.05	$13.75
LTC1668CG#TR	SSOP-28	C		$13.85
LTC1668CG#TRPBF	SSOP-28	C		$13.85
LTC1668IG	SSOP-28	I	$17.40	$14.95
LTC1668IG#PBF	SSOP-28	I	$17.40	$14.95
LTC1668IG#TR	SSOP-28	I		$15.05
LTC1668IG#TRPBF	SSOP-28	I		$15.05

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