參數(shù)資料
型號(hào)： AD5662
廠商： Analog Devices, Inc.
英文描述： 2.7 V to 5.5 V, 250 ??A, Rail-to-Rail Output 16-Bit DAC D/A in a SOT-23
中文描述： 2.7 V至5.5 V，250？？甲，軌到軌輸出16位DAC數(shù)/阿中采用SOT - 23
文件頁(yè)數(shù)： 16/20頁(yè)
文件大?。?/td> 357K
代理商： AD5662
AD5662
Preliminary Technical Data
APPLICATIONS
USING REF19x AS A POWER SUPPLY FOR AD5662
Because the supply current required by the AD5662 is
extremely low, an alternative option is to use a REF19x voltage
reference (REF195 for 5 V, REF193 for 3 V) to supply the
required voltage to the part—see Figure 36. This is especially
useful if the power supply is quite noisy, or if the system supply
voltages are at some value other than 5 V or 3 V, for example, 15
V. The REF19x outputs a steady supply voltage for the AD5662.
If the low dropout REF195 is used, it must supply 250 μA of
current to the AD5662. This is with no load on the output of the
DAC. When the DAC output is loaded, the REF195 also needs
to supply the current to the load. The total current required
(with a 5 k load on the DAC output) is
Rev. PrA | Page 16 of 20
250 μA + (5 V/5 k) = 1.25 mA
The load regulation of the REF195 is typically 2 ppm/mA,
which results in a 2.5 ppm (12.5 μV) error for the 1.25 mA
current drawn from it. This corresponds to a 0.164 LSB error.
AD5662
THREE-WIRE
SERIAL
INTERFACE
SYNC
SCLK
DIN
+15V
+5V
250
μ
A
V
OUT
= 0V TO 5V
REF195
0
Figure 36. REF195 as Power Supply to AD5662
BIPOLAR OPERATION USING THE AD5662
The AD5662 has been designed for single-supply operation but
a bipolar output range is also possible using the circuit in
Figure 37. The circuit below gives an output voltage range of
±5 V. Rail-to-rail operation at the amplifier output is achievable
using an AD820 or an OP295 as the output amplifier.
The output voltage for any input code can be calculated as
follows:
×
+
R1
×
×
=
R1
R2
V
R2
R1
D
536
,
V
V
DD
DD
O
65
where
D
represents the input code in decimal (0 to 65535).
With
V
DD
= 5 V,
R1
=
R2
= 10 k,
V
5
536
,
65
10
×
=
D
V
O
This is an output voltage range of ±5 V, with 0x0000 corre-
sponding to a 5 V output and 0xFFFF corresponding to a 5 V
output.
R2 = 10k
0
+5V
–5V
AD820/
OP295
THREE-WIRE
SERIAL
INTERFACE
+5V
AD5662
V
DD
V
OUT
R1 = 10k
±5V
0.1
μ
F
10
μ
F
Figure 37. Bipolar Operation with the AD5662
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AD5662ARJ-1500RL7 功能描述:IC DAC 16BIT BUFF V-OUT SOT23-8 RoHS:否 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:nanoDAC™ 產(chǎn)品培訓(xùn)模塊:LTC263x 12-, 10-, and 8-Bit VOUT DAC Family 特色產(chǎn)品:LTC2636 - Octal 12-/10-/8-Bit SPI VOUT DACs with 10ppm/°C Reference 標(biāo)準(zhǔn)包裝:91 系列:- 設(shè)置時(shí)間:4µs 位數(shù):10 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:8 電壓電源:單電源 功率耗散（最大）:2.7mW 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:14-DFN-EP（4x3） 包裝:管件 輸出數(shù)目和類(lèi)型:8 電壓，單極 采樣率（每秒）:*
AD5662ARJ-1REEL7 功能描述:IC DAC 16BIT BUFF V-OUT SOT23-8 RoHS:否 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:nanoDAC™ 產(chǎn)品培訓(xùn)模塊:LTC263x 12-, 10-, and 8-Bit VOUT DAC Family 特色產(chǎn)品:LTC2636 - Octal 12-/10-/8-Bit SPI VOUT DACs with 10ppm/°C Reference 標(biāo)準(zhǔn)包裝:91 系列:- 設(shè)置時(shí)間:4µs 位數(shù):10 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:8 電壓電源:單電源 功率耗散（最大）:2.7mW 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:14-DFN-EP（4x3） 包裝:管件 輸出數(shù)目和類(lèi)型:8 電壓，單極 采樣率（每秒）:*
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