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參數(shù)資料
| 型號： | AD660BRZ-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 3/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 16BIT MONO W/VREF 24-SOIC |
| 產(chǎn)品培訓模塊： | Data Converter Fundamentals DAC Architectures |
| 標準包裝： | 1,000 |
| 系列： | DACPORT® |
| 設(shè)置時間： | 6µs |
| 位數(shù)： | 16 |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 模擬和數(shù)字，雙 ± |
| 功率耗散（最大）： | 625mW |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-SOIC（0.295"，7.50mm 寬） |
| 供應商設(shè)備封裝： | 24-SOIC W |
| 包裝： | 帶卷 (TR) |
| 輸出數(shù)目和類型： | 1 電壓，單極；1 電壓，雙極 |
| 采樣率（每秒）： | 167k |
AD660
Rev. B | Page 11 of 20
BIPOLAR CONFIGURATION
The circuit shown in Figure 10 provides a bipolar output voltage
from 10.000000 V to +9.999694 V with positive full scale occur-
ring with all bits on. As in the unipolar mode, Resistor R1 and
Resistor R2 can be eliminated altogether to provide AD660 bipolar
operation without any external components. Eliminating these
resistors increases the gain error by 0.50% of FSR in bipolar mode.
HBE
CONTROL
LOGIC
SER
CLR
LDAC
REF IN
R1
50
R2
50
REF OUT
AD660
SOUT
VOUT
AGND
SPAN/
BIPOLAR
OFFSET
DGND
–VEE
+VCC
+VLL
10V REF
16-BIT LATCH
16-BIT DAC
16
17
18
19
23
24
20
21
22
13
1
2
3
4
15
01
81
3-
0
10
OUTPUT
10k
10.05k
DB1/DB9/
DATADIR
11
LBE/
CLEAR SELECT
DB0/
DB8/
SIN
CS
DB7/
DB15
5
12
14
16-BIT LATCH
Figure 10. ±10 V Bipolar Voltage Output
Gain offset and bipolar zero errors can be adjusted to zero using
the circuit shown in Figure 11 as follows:
1.
Offset adjust.
Turn off all bits. Adjust the trimmer, R2, to give 10.000000 V
output.
2.
Gain adjust.
Turn all bits on and adjust R1 to give a reading of 9.999694 V.
3.
Bipolar zero adjust (optional).
In applications where an accurate zero output is required, set
the MSB on, all other bits off, and readjust R2 for 0 V output.
HBE
CONTROL
LOGIC
SER
CLR
LDAC
REF IN
R1
50
REF OUT
AD660
SOUT
VOUT
AGND
SPAN/
BIPOLAR
OFFSET
DGND
–VEE
+VCC
+VLL
10V REF
16-BIT LATCH
16-BIT DAC
16
17
18
19
23
24
20
21
22
13
1
2
3
4
15
01
81
3-
0
1
OUTPUT
R2
100
10k
10.05k
DB1/DB9/
DATADIR
11
LBE/
CLEAR SELECT
DB0/
DB8/
SIN
CS
DB7/
DB15
5
12
14
16-BIT LATCH
Figure 11. ±10 V Bipolar Voltage Output with Gain and Offset Adjustment
Note that using external resistors introduces a small temperature
drift component beyond that inherent in the AD660. The inter-
nal resistors are trimmed to ratio-match and temperature-track
other resistors on-chip, even though their absolute tolerances are
±20% and absolute temperature coefficients are approximately
50 ppm/°C. In the case that external resistors are used, the
temperature coefficient mismatch between internal and external
resistors, multiplied by the sensitivity of the circuit to variations
in the external resistor value, is the resultant additional tempera-
ture drift.
INTERNAL/EXTERNAL REFERENCE USE
The AD660 has an internal low noise buried Zener diode
reference that is trimmed for absolute accuracy and temperature
coefficient. This reference is buffered and optimized for use in a
high speed DAC and gives long-term stability equal or superior to
the best discrete Zener diode references. The performance of
the AD660 is specified with the internal reference driving the
DAC and with the DAC alone (for use with a precision external
reference).
The internal reference has sufficient buffering to drive external
circuitry in addition to the reference currents required for the
DAC (typically 1 mA to REF IN and 1 mA to SPAN/BIPOLAR
OFFSET). A minimum of 2 mA is available for driving external
loads. The AD660 reference output should be buffered with an
external op amp if it is required to supply more than 4 mA total
current. The reference is tested and guaranteed to ±0.2%
maximum error.
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| AD660SQ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC IC MONO 16-BIT D/A CONV RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
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| AD660SQ/883B2 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Monolithic 16-Bit Serial/Byte DACPORT |
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