LTC221

所属类别：DAC数模转换器
产品名称：Micropower, Low Charge Injection, Quad CMOS Analog Switches with Data Latches
厂商：LT
生产批号：10+
封装：SO
库存状态：有库存
库存量：2000
最低订购量：1
详细资料：

Product Introduction

LTC221Micropower, Low Charge Injection, Quad CMOS Analog Switches with Data Latches

peculiarity

Micropower Operation
Single 5V or ±15V Supply Operation
Low Charge Injection
Low R_ON
Low Leakage
Guaranteed Break Before Make
Latch Resistant Design
TTL/CMOS Compatible
Improved Second Source for DG221/DG222
Microprocessor Bus Compatible

description

The LTC221 and LTC222 are micropower, quad CMOS analog switches which typically dissipate only 250µW from ±15V supplies and 40µW from a single 5V supply. Onboard latches allow the LTC221 and LTC222 to interface directly to most microprocessor buses. The switches have 65 Ohms typical on resistance and a very high off resistance. A break before make characteristic is inherent in these switches to prevent the shorting of two channels. The signal range is ±15V with a supply voltage of ±15V and 0V to 5V with a single 5V supply. The switches have special charge compensation circuitry which greatly reduces charge injection to a maximum of ±25pC (±15V supplies).

The LTC221 and LTC222 are designed for applications such as microprocessor controlled programmable gain amplifiers, automatic test equipment, communication systems, and data acquisition systems. The LTC221 is normally closed and the LTC222 is normally open as shown in the Logic Table.

apply

Supply Current..................
I+ = 40µA, I- = 5µA Max
Charge Injection
±15V Supplies.................. �25pC Max
Single 5V Supply.................. 2pC Typ
R_ON................... 65 Ohms Typ
Signal Range.................... ±15V

The ICs associated with the LTC221 include:

Model	Manufacturers	lot number	encapsulation	illustrate
LTM9012	LT	10+	11.25mm x 15mm BGA	Quad-channel, 14-bit, 125Msps ADC with integrated driver
LMP8276MAX	NS	10+11+	SOP	Bidirectional precision voltage differential amplifier
LMP8277MMX	NS	10+11+	DIP	Precision voltage differential amplifiers
BF722	NXP	11+	SOT-223	diode
LTC222	LT	10+	SO	Micropower, Low Charge Injection, Quad CMOS Analog Switches with Data Latches
LTC203	LT	10+	SO	Micropower, Low Charge Injection, Quad CMOS Analog Switches
LTC202	LT	10+	SO	Micropower, Low Charge Injection, Quad CMOS Analog Switches
LTC1393	LT	10+	SO, SSOP	Single-Ended 8-Channel/ Differential 4-Channel Analog Multiplexer with SMBus Interface
LMP8277MA	NS	10+11+	SOP-8	Precision voltage differential amplifiers
LTC1390	LT	10+	SO-16, DIP-16	8-Channel Analog Multiplexer with Serial Interface

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