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参数资料
| 型号： | MAX5839BCMH |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 16/16页 |
| 文件大小： | 0K |
| 描述： | IC DAC OCTAL V-OUT 13BIT 44-MQFP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 96 |
| 设置时间： | 22µs |
| 位数： | 13 |
| 数据接口： | 并联 |
| 转换器数目： | 8 |
| 电压电源： | 单电源 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-QFP |
| 供应商设备封装： | 44-MQFP（10x10） |
| 包装： | 托盘 |
| 输出数目和类型： | 8 电压，单极；8 电压，双极 |
| 采样率（每秒）： | * |
MAX5839
Octal, 13-Bit Voltage-Output DAC
with Parallel Interface
_______________________________________________________________________________________
9
_______________Detailed Description
Analog Section
The MAX5839 contains eight 13-bit voltage-output
DACs. These DACs are “inverted” R-2R ladder net-
works that convert 13-bit digital inputs into equivalent
analog output voltages, in proportion to the applied ref-
erence voltages (Figure 1). The MAX5839 has three
positive reference inputs (REF_ _ _ _+) and three nega-
tive reference inputs (REF_ _ _ _-). The difference from
REF_ _ _ _+ to REF_ _ _ _- , multiplied by two, sets the
DAC output span.
In addition to the differential reference inputs, the
MAX5839 has four analog-ground input pins (DUT-
GND_ _). When CLR is high (unasserted), the voltage
on DUTGND_ _ offsets the DAC output voltage range. If
CLR is asserted, the output amplifier is forced to the
voltage present on DUTGND_ _.
Reference and DUTGND Inputs
All of the MAX5839’s reference inputs are buffered with
precision amplifiers. This allows the flexibility of using
resistive dividers to set the reference voltages. Because
of the relatively high multiplying bandwidth of the refer-
ence input (188kHz), any signal present on the refer-
ence pin within this bandwidth is replicated on the DAC
output.
The DUTGND pins of the MAX5839 are connected to
the negative source resistor (nominally 84k
) of the
output amplifier. The DUTGND pins are typically con-
nected directly to analog ground. Each of these pins
has an input current that varies with the DAC digital
code. If the DUTGND pins are driven by external cir-
cuitry, budget ±200A per DAC for load current.
Output Buffer Amplifiers
The MAX5839’s voltage outputs are internally buffered
by precision gain-of-two amplifiers with a typical slew
rate of 1V/s. With a full-scale transition at its output,
the typical settling time to ±1/2LSB is 22s. This settling
time does not significantly vary with capacitive loads
less than 10,000pF.
Output Deglitching Circuit
The MAX5839’s internal connection from the DAC lad-
der to the output amplifier contains special deglitch cir-
cuitry. This glitch/deglitch circuitry is enabled on the
falling edge of LD to remove the glitch from the R-2R
DAC. This enables the MAX5839 to exhibit a fraction of
the glitch impulse energy of parts without the deglitch-
ing circuit.
REF-
REF+
2R
OUT
DUTGND
2R
CLR
RR
D0
D11
D12
Figure 1. DAC Simplified Circuit
CS
WR
A0–A2
D0–D12
LD
NOTES:
(NOTE 3)
1. ALL INPUT RISE AND FALL TIMES MEASURED FROM 10% TO 90% OF
+5V. tr = tf = 5ns.
2. MEASUREMENT REFERENCE LEVEL IS (VINH + VINL) / 2.
3. IF LD– IS ACTIVATED WHILE WR IS LOW, THEN LD– MUST STAY LOW
FOR t3 OR LONGER AFTER WR GOES HIGH.
t1
t2
t8
t9
t6
t7
t4
t5
t3
Figure 2. Digital Timing Diagram
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5839BEMH | 制造商:Maxim Integrated Products 功能描述:OCTAL, 13-BIT VOLTAGE-OUTPUT DAC WITH PARALLEL INTERFACE - Rail/Tube |
| MAX5841LEUB | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX5841LEUB+ | 功能描述:数模转换器- DAC 10-Bit 4Ch Precision DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX5841LEUB+T | 功能描述:数模转换器- DAC 10-Bit 4Ch Precision DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX5841LEUB-T | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
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