参数资料
型号: EVAL-AD7839EBZ
厂商: Analog Devices Inc
文件页数: 4/12页
文件大小: 0K
描述: BOARD EVAL FOR AD7839
产品培训模块: DAC Architectures
标准包装: 1
DAC 的数量: 8
位数: 13
采样率(每秒): 33k
数据接口: 并联
设置时间: 30µs
DAC 型: 电压
工作温度: -40°C ~ 85°C
已供物品: 板,缆线,CD
已用 IC / 零件: AD7839
相关产品: AD7839ASZ-REEL-ND - IC DAC 13BIT OCT VOLT OUT 44MQFP
AD7839ASZ-ND - IC DAC 13BIT OCTAL V-OUT 44-MQFP
AD7839
–12–
REV. 0
C3168–2–4/99
PRINTED
IN
U.S.A.
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
44-Lead MQFP (S-44)
0.548 (13.925)
0.546 (13.875)
TOP VIEW
(PINS DOWN)
1
33
34
44
11
12
23
22
0.033 (0.84)
0.029 (0.74)
0.398 (10.11)
0.390 (9.91)
0.016 (0.41)
0.012 (0.30)
0.083 (2.11)
0.077 (1.96)
0.040 (1.02)
0.032 (0.81)
0.040 (1.02)
0.032 (0.81)
SEATING
PLANE
0.096 (2.44)
MAX
0.037 (0.94)
0.025 (0.64)
0.8°
GND
VDD
8/10-BIT
DAC
GND
VDD
8/10-BIT
DAC
LOGIC LEVEL
SHIFT
+5V
5V
SCLK
D IN
FSIN/CS
SCLK
D IN
FSIN/CS
0V TO +5V
0V TO
5V
VREF(+)AB
A0, A1, A2
VOUTA
VOUTB
VREF( )AB
AD7839*
GND
DATA BUS
ADDR
DECODER
ADDR BUS
SDATA
SCLK
DATA BUS
CONTROLLER
*ADDITIONAL PINS OMITTED FOR CLARITY
Figure 22. Programmable Reference Generation for the AD7839
these DACs can be operated with supplies of 0 V and –5 V, with
the VDD pin connected to 0 V and the GND pin connected to
–5 V. Now these can be used to provide the negative reference
voltages for the VREF(–) inputs on the AD7839. However, the
digital signals driving the DACs need to be level-shifted from
the 0 V to +5 V range to the –5 V to 0 V range. Figure 22 shows
a typical application circuit to provide programmable reference
capabilities for the AD7839.
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