LTC2752ACLX#PBF【PDF 6/24 页】IC DAC 16BIT DUAL CUR OUT 48LQFP

收藏本站

您好，
买卖IC网欢迎您。
请登录
免费注册

买卖IC网

Sheet目录2006

2页 3页 4页 5页 [6页]7页 8页 9页 10页

LTC2752

2752f

writing code or span. If a 32-bit input sequence is used,

the first eight bits must be zeros, followed by the same

sequence as for a 24-bit wide input. Figure 3 shows the

input and readback sequences for both 24-bit and 32-bit

operations.

When CS/LD is low, the SRO pin (Serial Readback Output)

is an active output.The readback data begins after the

command (C3-C0) and address (A3-A0) words have been

shifted into SDI. SRO outputs a logic low (when CS/LD

is low) until the readback data begins. For a 24-bit input

sequence, the 16 readback bits are shifted out on the

falling edges of clocks 8-23, suitable for shifting into a

microprocessor on the rising edges of clocks 9-24. For a

32-bit sequence, the bits are shifted out on clocks 16-31;

see Figure 3b.

When CS/LD is high, the SRO pin presents a high imped-

ance (three-state) output.

LDAC is an asynchronous update pin. When LDAC is

taken low, all DACs are updated with code and span data

(data in the Input buffers is copied into the DAC buffers).

CS/LD must be high during this operation; otherwise

LDAC is locked out and will have no effect. The use of

LDAC is functionally identical to the “Update All DACs”

serial input command.

The codes for the command word (C3-C0) are defined in

Table 1; Table 2 defines the codes for the address word

(A3-A0).

Readback

In addition to the Input and DAC registers, each DAC has

one Readback register associated with it. When a Read

command is issued to a DAC, the contents of one of its

four buffers (Input and DAC registers for each of Span

operaTion

and Code) is copied into its Readback register and seri-

ally shifted out through the SRO pin. Figure 3 shows the

loading and readback sequences.

Inthedatafield(D15-D0)ofanynon-readinstructioncycle,

SRO shifts out the contents of the buffer that was specified

in the preceding command. This “rolling readback” default

mode of operation can dramatically reduce the number

of instruction cycles needed, since any command can be

verified during succeeding commands with no additional

overhead. See Figure 4. Table 1 shows the storage location

(‘readback pointer’) of the data which will be output from

SRO during the next instruction.

ForReadcommands,thedataisshiftedoutduringtheRead

instruction itself (on the 16 falling SCK edges immediately

after the last address bit is shifted in on SDI). When check-

ing the span of a DAC using SRO, the span bits are the last

four bits shifted out, corresponding to their sequence and

positions when writing a span. See Figure 3.

Span Readback in Manual Span Configuration

If a Span DAC register is chosen for readback, SRO re-

sponds by outputting the actual output span; this is true

whether the LTC2752 is configured for SoftSpan (M-SPAN

tied to GND) or manual span (M-SPAN tied to VDD) use.

In SoftSpan configuration, SRO outputs the span code

from the Span DAC register (programmed through the

SPI port). In manual span configuration, the active span

is controlled by pins S2, S1 and S0, so SRO outputs the

logic values of these pins. The span code bits S2, S1 and

S0 always appear in the same order and positions in the

SRO output sequence; see Figure 3.

发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

*型号	*数量	厂商	批号	封装

添加更多采购

我的联系方式

相关代理商/技术参数

LTC2752AILX#PBF 功能描述:IC DAC 16BIT DUAL CUR OUT 48LQFP RoHS:是类别:集成电路 (IC) >> 数据采集 - 数模转换器系列:SoftSpan™ 产品培训模块:Data Converter Fundamentals DAC Architectures 标准包装:750 系列:- 设置时间:7µs 位数:16 数据接口:并联转换器数目:1 电压电源:双 ± 功率耗散（最大）:100mW 工作温度:0°C ~ 70°C 安装类型:表面贴装封装/外壳:28-LCC（J 形引线）供应商设备封装:28-PLCC（11.51x11.51）包装:带卷 (TR) 输出数目和类型:1 电压，单极；1 电压，双极采样率（每秒）:143k

LTC2752BCLX#PBF 功能描述:IC DAC 16BIT DUAL CUR OUT 48LQFP RoHS:是类别:集成电路 (IC) >> 数据采集 - 数模转换器系列:SoftSpan™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 设置时间:4µs 位数:12 数据接口:串行转换器数目:2 电压电源:单电源功率耗散（最大）:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽）供应商设备封装:8-uMAX 包装:管件输出数目和类型:2 电压，单极采样率（每秒）:* 产品目录页面:1398 (CN2011-ZH PDF)

LTC2752BILX#PBF 功能描述:IC DAC 16BIT DUAL CUR OUT 48LQFP RoHS:是类别:集成电路 (IC) >> 数据采集 - 数模转换器系列:SoftSpan™ 产品培训模块:Data Converter Fundamentals DAC Architectures 标准包装:750 系列:- 设置时间:7µs 位数:16 数据接口:并联转换器数目:1 电压电源:双 ± 功率耗散（最大）:100mW 工作温度:0°C ~ 70°C 安装类型:表面贴装封装/外壳:28-LCC（J 形引线）供应商设备封装:28-PLCC（11.51x11.51）包装:带卷 (TR) 输出数目和类型:1 电压，单极；1 电压，双极采样率（每秒）:143k

LTC2753ACUK-16#PBF 功能描述:IC DAC 16BIT DUAL 48-QFN RoHS:是类别:集成电路 (IC) >> 数据采集 - 数模转换器系列:SoftSpan™ 产品培训模块:Data Converter Fundamentals DAC Architectures 标准包装:750 系列:- 设置时间:7µs 位数:16 数据接口:并联转换器数目:1 电压电源:双 ± 功率耗散（最大）:100mW 工作温度:0°C ~ 70°C 安装类型:表面贴装封装/外壳:28-LCC（J 形引线）供应商设备封装:28-PLCC（11.51x11.51）包装:带卷 (TR) 输出数目和类型:1 电压，单极；1 电压，双极采样率（每秒）:143k

LTC2753ACUK-16#TRPBF 功能描述:IC DAC 16BIT DUAL 48-QFN RoHS:是类别:集成电路 (IC) >> 数据采集 - 数模转换器系列:SoftSpan™ 产品培训模块:Data Converter Fundamentals DAC Architectures 标准包装:750 系列:- 设置时间:7µs 位数:16 数据接口:并联转换器数目:1 电压电源:双 ± 功率耗散（最大）:100mW 工作温度:0°C ~ 70°C 安装类型:表面贴装封装/外壳:28-LCC（J 形引线）供应商设备封装:28-PLCC（11.51x11.51）包装:带卷 (TR) 输出数目和类型:1 电压，单极；1 电压，双极采样率（每秒）:143k

LTC2753AIUK-16#PBF 功能描述:IC DAC 16BIT DUAL 48-QFN RoHS:是类别:集成电路 (IC) >> 数据采集 - 数模转换器系列:SoftSpan™ 产品培训模块:Data Converter Fundamentals DAC Architectures 标准包装:750 系列:- 设置时间:7µs 位数:16 数据接口:并联转换器数目:1 电压电源:双 ± 功率耗散（最大）:100mW 工作温度:0°C ~ 70°C 安装类型:表面贴装封装/外壳:28-LCC（J 形引线）供应商设备封装:28-PLCC（11.51x11.51）包装:带卷 (TR) 输出数目和类型:1 电压，单极；1 电压，双极采样率（每秒）:143k

LTC2753AIUK-16#TRPBF 功能描述:IC DAC 16BIT DUAL 48-QFN RoHS:是类别:集成电路 (IC) >> 数据采集 - 数模转换器系列:SoftSpan™ 产品培训模块:Data Converter Fundamentals DAC Architectures 标准包装:750 系列:- 设置时间:7µs 位数:16 数据接口:并联转换器数目:1 电压电源:双 ± 功率耗散（最大）:100mW 工作温度:0°C ~ 70°C 安装类型:表面贴装封装/外壳:28-LCC（J 形引线）供应商设备封装:28-PLCC（11.51x11.51）包装:带卷 (TR) 输出数目和类型:1 电压，单极；1 电压，双极采样率（每秒）:143k

LTC2753BCUK-16#PBF 功能描述:IC DAC 16BIT DUAL 48-QFN RoHS:是类别:集成电路 (IC) >> 数据采集 - 数模转换器系列:SoftSpan™ 标准包装:47 系列:- 设置时间:2µs 位数:14 数据接口:并联转换器数目:1 电压电源:单电源功率耗散（最大）:55µW 工作温度:-40°C ~ 85°C 安装类型:表面贴装封装/外壳:28-SSOP（0.209"，5.30mm 宽）供应商设备封装:28-SSOP 包装:管件输出数目和类型:1 电流，单极；1 电流，双极采样率（每秒）:*

采购需求

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

我的联系方式