參數(shù)資料
型號(hào): AD7839ASZ-REEL
廠商: Analog Devices Inc
文件頁(yè)數(shù): 4/12頁(yè)
文件大小: 0K
描述: IC DAC 13BIT OCT VOLT OUT 44MQFP
產(chǎn)品培訓(xùn)模塊: Data Converter Fundamentals
DAC Architectures
標(biāo)準(zhǔn)包裝: 800
設(shè)置時(shí)間: 30µs
位數(shù): 13
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 8
電壓電源: 模擬和數(shù)字,雙 ±
功率耗散(最大): 303mW
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 44-QFP
供應(yīng)商設(shè)備封裝: 44-MQFP(10x10)
包裝: 帶卷 (TR)
輸出數(shù)目和類型: 8 電壓,單極;8 電壓,雙極
采樣率(每秒): 33k
配用: EVAL-AD7839EBZ-ND - BOARD EVAL FOR AD7839
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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