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LTC1657 - Parallel 16-Bit Rail-to-Rail Micropower DAC

Datasheet

Documentation

Datasheet

LTC1657/LTC1657L - Parallel 16-Bit Rail-to-Rail Micropower DAC

Reliability Data

R266 Reliability Data

Product Selector Card

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LTC1657 Footprints and Symbols

Overview

Features

16-Bit Monotonic Over Temperature
Deglitched Rail-to-Rail Voltage Output: 8nV·s
I_CC: 650µA Typ
Maximum DNL Error: ±1LSB
Settling Time: 20µs to ±1LSB
Built-In Reference: 2.048V (LTC1657)
1.25V (LTC1657L)
Internal Power-On Reset to Zero Volts
Asynchronous CLR Pin
Output Buffer Configurable for Gain of 1 or 2
Parallel 16-Bit or 2-Byte Double Buffered Interface
Narrow 28-Lead SSOP Package
Multiplying Capability

Typical Application

Description

The LTC1657/LTC1657L are complete single supply, rail-to-rail voltage output, 16-bit analog-to-digital converters (DAC) in a 28-pin SSOP or PDIP package. They include a rail-to-rail output buffer amplifier, an internal reference and a double buffered parallel digital interface.

The LTC1657/LTC1657L have separate reference input pins that can be driven by an external reference. The fullscale output can be 1 or 2 times the reference voltage depending on how the X1/X2 pin is connected. The LTC1657 operates from a 4.5V to 5.5V supply and has an onboard 2.048V reference. The LTC1657L operates from a 2.7V to 5.5V supply and has an onboard 1.25V reference.

The LTC1657/LTC1657L are similar to Linear Technology Corporations's LTC1450/LTC1450L 12-bit V_OUT DAC family, allowing an upgrade path. They are the only buffered 16-bit parallel DACs in a 28-lead SSOP package and include an onboard reference for stand alone performance.

Packaging

SSOP-28

Order Info

Package Variations and Pricing

Part Number	Package	Pins	Temp	Price (1-99)	Price (1k)^*
LTC1657CGN#PBF	SSOP	28	C	$10.00	$8.60
LTC1657CGN#TRPBF	SSOP	28	C		$8.68
LTC1657IGN#PBF	SSOP	28	I	$10.95	$9.40
LTC1657IGN#TRPBF	SSOP	28	I		$9.48
LTC1657LCGN#PBF	SSOP	28	C	$11.05	$9.50
LTC1657LCGN#TRPBF	SSOP	28	C		$9.60
LTC1657LIGN#PBF	SSOP	28	I	$12.00	$10.30
LTC1657LIGN#TRPBF	SSOP	28	I		$10.40
LTC1657CGN	SSOP	28	C	$20.00	$17.20
LTC1657CGN#TR	SSOP	28	C		$17.36
LTC1657IGN	SSOP	28	I	$21.90	$18.80
LTC1657IGN#TR	SSOP	28	I		$18.96
LTC1657LIGN#TR	SSOP	28	I		$20.80
LTC1657LIGN	SSOP	28	I	$24.00	$20.60
LTC1657LCGN	SSOP	28	C	$22.10	$19.00
LTC1657LCGN#TR	SSOP	28	C		$19.20

^* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.