LM12458CIV

更新时间： 2024-11-22 22:24:27

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
43页	993K
描述
12-Bit Sign Data Acquisition System with Self-Calibration

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技术参数
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LM12458CIV 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
包装说明：	PLASTIC, LCC-44	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5	模拟集成电路 - 其他类型：	ANALOG CIRCUIT
JESD-30 代码：	S-PQCC-J44	JESD-609代码：	e0
长度：	16.51 mm	湿度敏感等级：	2A
功能数量：	1	端子数量：	44
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	QCCJ
封装形状：	SQUARE	封装形式：	CHIP CARRIER
峰值回流温度（摄氏度）：	NOT SPECIFIED	认证状态：	Not Qualified
座面最大高度：	4.57 mm	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	3 V	标称供电电压 (Vsup)：	5 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	J BEND
端子节距：	1.27 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	16.51 mm
Base Number Matches：	1

LM12458CIV 数据手册

July 1999

LM12454/LM12458/LM12H458

12-Bit + Sign Data Acquisition System with

Self-Calibration

General Description

Key Specifications

(f_CLK5 MHz; 8 MHz, H)

The LM12454, LM12458, and LM12H458 are highly inte-

grated Data Acquisition Systems. Operating on just 5V, they

combine a fully-differential self-calibrating (correcting linear-

ity and zero errors) 13-bit (12-bit + sign) analog-to-digital

converter (ADC) and sample-and-hold (S/H) with extensive

analog functions and digital functionality. Up to 32 consecu-

tive conversions, using two’s complement format, can be

stored in an internal 32-word (16-bit wide) FIFO data buffer.

An internal 8-word RAM can store the conversion sequence

for up to eight acquisitions through the LM12(H)458’s

eight-input multiplexer. The LM12454 has a four-channel

multiplexer, a differential multiplexer output, and a differential

S/H input. The LM12454 and LM12(H)458 can also operate

with 8-bit + sign resolution and in a supervisory “watchdog”

mode that compares an input signal against two program-

mable limits.

Resolution

12-bit + sign or 8-bit + sign

8.8 µs, 5.5 µs (H) (max)

4.2 µs, 2.6 µs (H) (max)

13-bit conversion time

9-bit conversion time

13-bit Through-put rate

88k samples/s (min),

140k samples/s (H) (min)

Comparison time

2.2 µs (max),

1.4 µs (H) (max)

(“watchdog” mode)

1 LSB (max)

ILE

V_INrange

GND to V_A

Power dissipation

Stand-by mode

Single supply

30 mW, 34 mW (H) (max)

50 µW (typ)

3V to 5.5V

Programmable acquisition times and conversion rates are

possible through the use of internal clock-driven timers. The

reference voltage input can be externally generated for ab-

solute or ratiometric operation or can be derived using the in-

ternal 2.5V bandgap reference.

Features

n Three operating modes: 12-bit + sign, 8-bit + sign, and

“watchdog”

n Single-ended or differential inputs

n Built-in Sample-and-Hold and 2.5V bandgap reference

n Instruction RAM and event sequencer

n 8-channel (LM12(H)458), 4-channel (LM12454)

multiplexer

All registers, RAM, and FIFO are directly addressable

through the high speed microprocessor interface to either an

8-bit or 16-bit databus. The LM12454 and LM12(H)458 in-

clude

a direct memory access (DMA) interface for

high-speed conversion data transfer.

n 32-word conversion FIFO

An evaluation/interface board is available. Order num-

ber LM12458EVAL.

n Programmable acquisition times and conversion rates

n Self-calibration and diagnostic mode

n 8- or 16-bit wide databus dmicroprocessor or DSP

interface

Additional applications information can be found in applica-

tions notes AN-906, AN-947 and AN-949.

Applications

n Data Logging

n Instrumentation

n Process Control

n Energy Management

n Inertial Guidance

TRI-STATE^®is a registered trademark of National Semiconductor Corporation.

AT^®is a registered trademark of International Business Machines Corporation.

DS011264

www.national.com

12 3 4 5 6 7...43

中文翻译

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LM12458CIV 替代型号

型号	品牌	替代类型	描述	数据表
LM12458CIV/NOPB	NSC	功能相似	IC SPECIALTY ANALOG CIRCUIT, PQCC44, PLASTIC, LCC-44, Analog IC:Other
LM12458CIVX	NSC	功能相似	12-Bit + Sign Data Acquisition System with Self-Calibration
LM12H458CIV	NSC	功能相似	12-Bit Sign Data Acquisition System with Self-Calibration

与LM12458CIV相关器件

型号	品牌	获取价格	描述	数据表
LM12458CIV/NOPB	NSC	获取价格	IC SPECIALTY ANALOG CIRCUIT, PQCC44, PLASTIC, LCC-44, Analog IC:Other
LM12458CIV/NOPB	TI	获取价格	具有自校准功能的 88kSPS、12 位 + 符号数据采集系统 \| FN \| 44 \| -
LM12458CIVF	NSC	获取价格	12-Bit Sign Data Acquisition System with Self-Calibration
LM12458CIVX	NSC	获取价格	12-Bit + Sign Data Acquisition System with Self-Calibration
LM12458CIVX/NOPB	TI	获取价格	具有自校准功能的 88kSPS、12 位 + 符号数据采集系统 \| FN \| 44 \| -
LM12458CMEL/883	ETC	获取价格	Single-Ended Data Acquisition System
LM12458MEL/883	ETC	获取价格	Single-Ended Data Acquisition System
LM12458MW/883	ETC	获取价格	Single-Ended Data Acquisition System
LM1246	NSC	获取价格	150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character
LM1246AAA	NSC	获取价格	150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character

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