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參數(shù)資料
| 型號： | AD5326BRUZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 13/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 12BIT QUAD W/BUFF 16TSSOP |
| 產品培訓模塊： | Data Converter Fundamentals DAC Architectures |
| 標準包裝： | 1 |
| 設置時間： | 8µs |
| 位數(shù)： | 12 |
| 數(shù)據(jù)接口： | I²C，串行 |
| 轉換器數(shù)目： | 4 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 4.5mW |
| 工作溫度： | -40°C ~ 105°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-TSSOP（0.173"，4.40mm 寬） |
| 供應商設備封裝： | 16-TSSOP |
| 包裝： | 管件 |
| 輸出數(shù)目和類型： | 4 電壓，單極；4 電壓，雙極 |
| 采樣率（每秒）： | 125k |
| 產品目錄頁面： | 782 (CN2011-ZH PDF) |
AD5306/AD5316/AD5326
Rev. F | Page 20 of 24
APPLICATIONS
TYPICAL APPLICATION CIRCUIT
The AD5306/AD5316/AD5326 can be used with a wide range
of reference voltages where the devices offer full one-quadrant
multiplying capability over a reference range of 0 V to VDD.
More typically, these devices are used with a fixed precision-
reference voltage. Suitable references for 5 V operation are the
AD780 and REF192 (2.5 V references). For 2.5 V operation, a
suitable external reference is the AD589, a 1.23 V band gap
reference. Figure 36 shows a typical setup for the AD5306/
AD5316/AD5326 when using an external reference. Note that
A0 and A1 can be high or low.
AD5306/
AD5316/
AD5326
GND
SDA
SERIAL
INTERFACE
VOUT
EXT
REF
0.1
μF
VREFA
VREFC
VREFD
VREFB
AD780/REF192
WITH VDD = 5V
OR AD599 WITH
VDD = 2.5V
VDD = 2.5V TO 5.5V
VIN
A0
A1
10
μF
1
μF
SCL
VOUTA
VOUTC
VOUTB
VOUTD
02066-036
Figure 36. AD5306/AD5316/AD5326
Using a 2.5 V External Reference
DRIVING VDD FROM THE REFERENCE VOLTAGE
If an output range of 0 V to VDD is required when the reference
inputs are configured as unbuffered, the simplest solution is to
connect the reference inputs to VDD. Because this supply may be
noisy and somewhat inaccurate, the AD5306/AD5316/AD5326
may be powered from the reference voltage, for example, using
a 5 V reference such as the REF195. The REF195 outputs a
steady supply voltage for the AD5306/AD5316/AD5326. The
typical current required from the REF195 is 500 μA supply
current and approximately 112 μA to supply the reference
inputs, if unbuffered. This is with no load on the DAC outputs.
When the DAC outputs are loaded, the REF195 also needs to
supply the current to the loads. The total current required (with
a 10 kΩ load on each output) is
612 μA + (5 V/10 kΩ) = 2.6 mA
The load regulation of the REF195 is typically 2 ppm/mA,
which results in an error of 5.2 ppm (26 μV) for the 2.6 mA
current drawn from it. This corresponds to a 0.0013 LSB error
at eight bits and a 0.021 LSB error at 12 bits.
BIPOLAR OPERATION USING THE
AD5306/AD5316/AD5326
The AD5306/AD5316/AD5326 are designed for single-supply
operation, but a bipolar output range is also possible using the
circuit in Figure 37. This circuit 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.
+5V
–5V
AD820/
OP295
10
μF
6V TO 12V
0.1
μF
R1
10k
Ω
±5V
R2
10k
Ω
A1
A0
GND
VOUT
AD1585
+5V
2-WIRE
SERIAL
INTERFACE
SCL SDA
GND
1
μF
AD5306/
AD5316/
AD5326
VREFA
VREFC
VREFD
VREFB
VOUTC
VOUTB
VOUTA
VOUTD
VIN
VDD
03756-A-037
Figure 37. Bipolar Operation with the AD5306/AD5316/AD5326
The output voltage for any input code can be calculated as follows:
(
) ()
()
1
2
R
/
R
REFIN
R1
R2
R1
N
/
D
REFIN
OUT
V
×
+
×
=
where:
D is the decimal equivalent of the code loaded to the DAC.
N is the DAC resolution.
REFIN is the reference voltage input.
With REFIN = 5 V, R1 = R2 = 10 kΩ,
VOUT = (10 × D/2N) 5 V
MULTIPLE DEVICES ON ONE BUS
Figure 38 shows four AD5306 devices on the same serial bus.
Each has a different slave address since the states of the A0 and
A1 pins are different. This allows each of 16 DACs to be written
to or read from independently.
02066-038
PULL-UP
RESISTORS
SCL
SDA
AD5306
SCL
SDA
A0
A1
VDD
MASTER
A0
A1
SCL
SDA
AD5306
SCL
SDA
A0
A1
A0
A1
Figure 38. Multiple AD5306 Devices on One Bus
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD5326BRUZ1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:2.5 V to 5.5 V, 400 ??A, 2-Wire Interface, Quad Voltage Output, 8-/10-/12-Bit DACs |
| AD5326BRUZ-REEL | 功能描述:IC DAC 12BIT QUAD W/BUFF 16TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉換器 系列:- 標準包裝:47 系列:- 設置時間:2µs 位數(shù):14 數(shù)據(jù)接口:并聯(lián) 轉換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:55µW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:管件 輸出數(shù)目和類型:1 電流，單極；1 電流，雙極 采樣率（每秒）:* |
| AD5326BRUZ-REEL1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:2.5 V to 5.5 V, 400 ??A, 2-Wire Interface, Quad Voltage Output, 8-/10-/12-Bit DACs |
| AD5326BRUZ-REEL7 | 功能描述:IC DAC 12BIT QUAD W/BUFF 16TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉換器 系列:- 標準包裝:47 系列:- 設置時間:2µs 位數(shù):14 數(shù)據(jù)接口:并聯(lián) 轉換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:55µW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:管件 輸出數(shù)目和類型:1 電流，單極；1 電流，雙極 采樣率（每秒）:* |
| AD5326BRUZ-REEL71 | 制造商:AD 制造商全稱:Analog Devices 功能描述:2.5 V to 5.5 V, 400 ??A, 2-Wire Interface, Quad Voltage Output, 8-/10-/12-Bit DACs |
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