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參數(shù)資料
| 型號： | MX7535KP+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 14BIT MPU COMP 28-PLCC |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 500 |
| 設(shè)置時(shí)間： | 800ns |
| 位數(shù)： | 14 |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 單電源 |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-LCC（J 形引線） |
| 供應(yīng)商設(shè)備封裝： | 28-PLCC（11.51x11.51） |
| 包裝： | 帶卷 (TR) |
| 輸出數(shù)目和類型： | 1 電流，單極；1 電流，雙極 |
| 采樣率（每秒）： | * |
MX7534/MX7535
Microprocessor-Compatible,
14-Bit DACs
10
______________________________________________________________________________________
Compensation
A compensation capacitor, C1, may be needed when
the DAC is used with a high-speed output amplifier.
The capacitor cancels the pole formed by the DAC’s
output capacitance and internal feedback resistance.
Its value depends on the type of op amp used, but typi-
cal values range from 10pF to 33pF. Too small a value
causes output ringing, while excess capacitance over-
damps the output. Minimize C1’s size and improve out-
put settling performance by keeping the PC board
trace as short as possible and stray capacitance at
IOUT as small as possible.
Bypassing
Place a 1F bypass capacitor, in parallel with a 0.01F
ceramic capacitor, as close to the DAC’s VDD and GND
pins as possible. Use a 1F tantalum bypass capacitor
to optimize high-frequency noise rejection. Place a
4.7F decoupling capacitor at VSS to minimize the DAC
output leakage current.
The MX7534/MX7535 have high-impedance digital
inputs. To minimize noise pickup, connect them to
either VDD or GND terminals when not in use. Connect
active inputs to VDD or GND through high-value resis-
tors (1M
) to prevent static charge accumulation if
these pins are left floating, as might be the case when
a circuit card is left unconnected.
Op-Amp Selection
Input offset voltage (VOS), input bias current (IB), and
offset voltage drift (TC VOS) are three key parameters in
determining the choice of a suitable amplifier. To main-
tain specified accuracy with VREF of 10V, VOS should
be less than 30V and IB should be less than 2nA.
Open-loop gain should be greater than 340,000.
Maxim’s MAX400 has low VOS (10V max), low IB
(2nA), and low TC VOS (0.3V/°C max). This op amp
can be used without requiring any adjustments. For
OP AMP
INPUT OFFSET
VOLTAGE (VOS)
INPUT BIAS
CURRENT (IB)
OFFSET VOLTAGE
DRIFT (TC VOS)
SETTLING
TO 0.003% FS
MAX400
10V
2nA
0.3V/°C
50s
Maxim OP07
25V
2nA
0.6V/°C
50s
AD554L*
500V
25pA
5V/°C
5s
HA2620*
4mV
35nA
20V/°C
0.8s
Table 5. Amplifier Performance Comparisons
* AD544L is an Analog Devices part; HA2620 is a Harris Semiconductor part.
R4
33
R3
100
INPUT
DATA
SIGNAL
GROUND
A1
A2
7–14
620
5
4
3
2
19
1
C1
33pF
VDD
RL
VSS
MX7534
REF
RFB
IOUT
AGNDS
AGNDF
DGND
D7–D0
+
VIN
NOTE: CONTROL INPUTS OMITTED FOR CLARITY.
VO
Figure 6a. Unipolar Binary Operation with Forced Ground
R2
10
R1
20
INPUT
DATA
SIGNAL
GROUND
ANALOG
GROUND
A1
A2
8–21
7
27
6
5
4
3
26
21
C1
33pF
VDD
RL
VSS
MX7535
REFF REFS
RFB
IOUT
AGNDS
AGNDF
DGND
D13–D0
+
VOLTAGE
REFERENCE
NOTE: CONTROL INPUTS OMITTED FOR CLARITY.
VO
Figure 6b. Unipolar Binary Operation with Forced Ground for
Remote Load
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MX7535SD | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 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(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MX7535SQ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 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(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MX7535TD | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 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(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MX7535TQ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 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(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MX7536 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:レP Compatible 14-Bit D/A Converter |
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