Datasheet > ML2340CCS/12

ML2340CCS/12

更新时间： 2024-01-02 23:11:00

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		光电二极管转换器
页数	文件大小	规格书
12页	180K
描述
D/A Converter, 1 Func, Parallel, 8 Bits Input Loading, 2.5us Settling Time, PDSO18, PLASTIC, SOIC-18

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技术参数
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ML2340CCS/12 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	SOP, SOP18,.4
针数：	18	Reach Compliance Code：	unknown
风险等级：	5.92	Is Samacsys：	N
最大模拟输出电压：	11.9 V	最小模拟输出电压：	0.1 V
转换器类型：	D/A CONVERTER	输入位码：	2'S COMPLEMENT BINARY
输入格式：	PARALLEL, 8 BITS	JESD-30 代码：	R-PDSO-G18
JESD-609代码：	e0	长度：	11.58 mm
最大线性误差 (EL)：	0.1953%	位数：	8
功能数量：	1	端子数量：	18
最高工作温度：	70 °C	最低工作温度：
封装主体材料：	PLASTIC/EPOXY	封装代码：	SOP
封装等效代码：	SOP18,.4	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	12 V	认证状态：	Not Qualified
座面最大高度：	2.72 mm	最大稳定时间：	5 µs
标称安定时间 (tstl)：	2.5 µs	子类别：	Other Converters
最大压摆率：	11 mA	标称供电电压：	12 V
表面贴装：	YES	技术：	CMOS
温度等级：	COMMERCIAL	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	7.52 mm	Base Number Matches：	1

ML2340CCS/12 数据手册

ML2340, ML2350

1.0 FUNCTIONAL DESCRIPTION

1.1 D/A CONVERTER

The D/A converter is implemented using an array of equal

current sources that are decoded semi-linearly for the four

most significant bits to improve differential linearity and to

reduce output glitch around major carries. See Figure 4.

the D/A converter. The D/A converter output current is

then converted to a voltage output by an output buffer

and a resistive network. The matching among the

on-chip resistors preserves the gain accuracy between

these conversions.

The input voltage reference of the D/A converter is the

difference between V

and AGND. This difference

The D/A converter can be used in a multiplying mode by

modulating the reference input within the specified

REF IN

voltage is converted to a reference current using an

internal resistor to set up the appropriate current level in

REF IN

range.

4-BIT

DIVIDER

DAC

OUT

Figure 4. D/A Converter Implementation

1.2 SINGLE-SUPPLY vs. DUAL-SUPPLY OPERATION

1.3.2 Bipolar Output Mode

In the bipolar mode, V

swings around V . The input

ML2340 and ML2350 can be powered from a single

supply ranging from 4.5V to 13.2V or dual supplies

ranging from ±2.25V to ±6.6V.

OUT

data is in 2’s complement binary format. Ideally, the

00000000 code results in an output voltage of V ; the

10000000 code results in an output voltage of (V – V );

The internal digital and analog circuitry is powered

and the 01111111 results in an output voltage of (V

between V and AGND. The range of DGND is

127/128), where V is the full scale output voltage

AGND ≤ DGND ≤ V – 4.5V with the logic thresholds

determined by V

and the gain setting.

REF IN

set between 0.8V and 2.0V above DGND (standard TTL

logic level). The range of V is AGND ≤ V ≤ (V –

1.4 OUTPUT BUFFER AND GAIN SETTING

2.25V).

The output buffer converts the D/A output current to a

voltage output using a resistive network with proper gain

setting determined by the GAIN 0 and GAIN 1 inputs.

There are four possible gain settings for unipolar output

voltage mode and bipolar output voltage mode as listed

below:

1.3 UNIPOLAR AND BIPOLAR OUTPUT

VOLTAGE SWING

ML2340 and ML2350 can operate in either unipolar or

bipolar output voltage mode. Unipolar/bipolar mode

selection is determined by comparing the zero scale

voltage (V ) of these devices to a precise internal

Unipolar Output Voltage Mode

reference that is referred to AGND. V is ideally the

voltage that will be produced at the DAC voltage output

when the digital input data is set to all “0’s” Unipolar

Voltage Output Swing

GAIN 1

GAIN 0

GAIN

Relative to V

mode is selected when V is lower than 1.00 volt, and

REF IN

× ¹/

bipolar mode is selected when V is greater than 1.50

volts.

1.3.1 Unipolar Output Mode

× 1

× 2

REF IN

In the unipolar mode, V

swings above V . Ideally the

OUT

00000000 code results in an output voltage of V , and

the 11111111 code results in an output voltage of

x 255/256, where V is the full-scale voltage

determined by V

and the gain setting.

REF IN

REV. 1.0 10/10/2000

1...4 5 678 9 10...12

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ML2340CCS/5	MICRO-LINEAR	Single Supply, Programmable 8-Bit D/A Converters	获取价格
ML2350BCP/5	FAIRCHILD	D/A Converter, 1 Func, Parallel, 8 Bits Input Loading, 2.5us Settling Time, PDIP18, PLASTI	获取价格
ML2350BCQ/12	FAIRCHILD	D/A Converter, 1 Func, Parallel, 8 Bits Input Loading, 2.5us Settling Time, PQCC18, PLASTI	获取价格
ML2350BCQ/5	FAIRCHILD	D/A Converter, 1 Func, Parallel, 8 Bits Input Loading, 2.5us Settling Time, PQCC18, PLASTI	获取价格
ML2350BCS/12	FAIRCHILD	D/A Converter, 1 Func, Parallel, 8 Bits Input Loading, 2.5us Settling Time, PDSO18, PLASTI	获取价格
ML2350BCS/5	FAIRCHILD	D/A Converter, 1 Func, Parallel, 8 Bits Input Loading, 2.5us Settling Time, PDSO18, PLASTI	获取价格

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