参数资料
型号: ISL5957IB
厂商: Intersil
文件页数: 3/13页
文件大小: 0K
描述: IC DAC 14-BIT 260MHZ 28-SOIC
标准包装: 26
位数: 14
数据接口: 并联
转换器数目: 1
电压电源: 模拟和数字
功率耗散(最大): 157mW
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
供应商设备封装: 28-SOIC W
包装: 管件
输出数目和类型: 2 电流,单极
采样率(每秒): 260M
11
FN6080.1
November 12, 2004
Propagation Delay
The converter requires two clock rising edges for data to be
represented at the output. Each rising edge of the clock
captures the present data word and outputs the previous
data. The propagation delay is therefore 1/CLK, plus <2ns of
processing. See Figure 15.
Test Service
Intersil offers customer-specific testing of converters with a
service called Testdrive. To submit a request, fill out the
Testdrive form. The form can be found by doing an ‘entire
site search’ at www.intersil.com on the words ‘DAC
Testdrive’. Or, send a request to the technical support center.
PIN 21
PIN 22
RDIFF
ISL5957
RLOAD
FIGURE 13. OUTPUT LOADING FOR DATASHEET
MEASUREMENTS
IOUTB
IOUTA
VOUT = (2 x IOUTA x REQ)V
LOAD SEEN BY THE TRANSFORMER
RLOAD REPRESENTS THE
1:1
REQ = 0.5 x (RLOAD//RDIFF)
AT EACH OUTPUT
FIGURE 14. ALTERNATIVE OUTPUT LOADING
PIN 21
PIN 22
ISL5957
IOUTB
IOUTA
VOUT = (2 x IOUTA x REQ)V
REQ = 0.5 x (RLOAD//RDIFF// RA), WHERE RA = RB
AT EACH OUTPUT
RLOAD
RDIFF
RA
RB
LOAD SEEN BY THE TRANSFORMER
RLOAD REPRESENTS THE
Timing Diagram
FIGURE 15. PROPAGATION DELAY, SETUP TIME, HOLD TIME AND MINIMUM PULSE WIDTH DIAGRAM
CLK
IOUT
50%
tPW1
tPW2
tSU
tHLD
tSU
tPD
tHLD
D13-D0
W0
W1
W2
W3
OUTPUT = W0
OUTPUT = W1
tPD
OUTPUT = W-1
ISL5957
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