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參數(shù)資料
| 型號(hào)： | MAX537BCWE |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 15/24頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC QUAD CALBRTD 12BIT 16SOIC |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 46 |
| 設(shè)置時(shí)間： | 3µs |
| 位數(shù)： | 12 |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 4 |
| 電壓電源： | 雙 ± |
| 功率耗散（最大）： | 762mW |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SOIC W |
| 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）： | * |
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MAX536/MAX537
Using an AC Reference
In applications where the reference has AC signal compo-
nents, the MAX536/MAX537 have multiplying capability
within the reference input range specifications. Figure 12
shows a technique for applying a sine-wave signal to the
reference input where the AC signal is offset before being
applied to REFAB/REFCD. The reference voltage must
never be more negative than DGND.
The MAX536’s total harmonic distortion plus noise
(THD+N) is typically less than 0.012%, given a 5VP-P signal
swing and input frequencies up to 35kHz, or given a 2VP-P
swing and input frequencies up to 50kHz. The typical -3dB
frequency is 700kHz as shown in the Typical Operating
Characteristics graphs.
For the MAX537, with an input signal amplitude of
0.85mVP-P, THD+N is typically less than 0.024% with a
5k
load in parallel with 100pF and input frequencies up
to 100kHz, or with a 2k
load in parallel with 100pF and
input frequencies up to 95kHz.
Offsetting AGND
AGND can be biased from DGND to the reference voltage
to provide an arbitrary nonzero output voltage for a zero
input code (Figure 13). The output voltage VOUTA is:
VOUTA = VBIAS + NB (VIN)
where VBIAS is the positive offset voltage (with respect
to DGND) applied to AGND, and NB is the numeric
value of the DAC’s binary input code. Since AGND is
common to all four DACs, all outputs will be offset by
VBIAS in the same manner. As the voltage at AGND
increases, the DAC’s resolution decreases because its
full-scale voltage swing is effectively reduced. AGND
should not be biased more negative than DGND.
Power-Supply Considerations
On power-up, VSS should come up first, VDD next, then
REFAB or REFCD. If supply sequencing is not possible,
tie an external Schottky diode between VSS and AGND
as shown in Figure 14. On power-up, all input and DAC
registers are cleared (set to zero code) and SDO is in
Mode 0 (serial data is shifted out of SDO on the clock’s
rising edge).
For rated MAX536 performance, VDD should be 4V
higher than REFAB/REFCD and should be between
10.8V and 13.2V. When using the MAX537, VDD should
be at least 2.2V higher than REFAB/REFCD and should
be between 4.75V and 5.5V. Bypass both VDD and VSS
with a 4.7
F capacitor in parallel with a 0.1F capacitor
to AGND. Use short lead lengths and place the bypass
capacitors as close to the supply pins as possible.
Grounding and Layout Considerations
Digital or AC transient signals between AGND and
DGND can create noise at the analog outputs. Tie
AGND and DGND together at the DAC, then tie this
point to the highest quality ground available.
Good PCB ground layout minimizes crosstalk between
DAC outputs, reference inputs, and digital inputs.
Reduce crosstalk by keeping analog lines away from
digital lines. Wire-wrapped boards are not recommend-
ed.
Calibrated, Quad, 12-Bit
Voltage-Output DACs with Serial Interface
22
______________________________________________________________________________________
MAX536
MAX537
1N5817
3
4
VSS
AGND
Figure 14. When VSS and VDD cannot be sequenced, tie a
Schottky diode between VSS and AGND.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX537BCWE+ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 4Ch Precision 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 |
| MAX537BCWE+T | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 4Ch Precision 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 |
| MAX537BCWE-T | 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 |
| MAX537BEPE | 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 |
| MAX537BEPE+ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 4Ch Precision 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 |
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