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參數(shù)資料
| 型號： | MAX5352AEPA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | DAC |
| 英文描述： | Circular Connector; No. of Contacts:55; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:17; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:17-35 RoHS Compliant: No |
| 中文描述： | SERIAL INPUT LOADING, 14 us SETTLING TIME, 12-BIT DAC, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁數(shù)： | 9/16頁 |
| 文件大小： | 197K |
| 代理商： | MAX5352AEPA |
M
Low-Power, 12-Bit Voltage-Output DACs
with S erial Interfac e
_______________________________________________________________________________________
9
_______________Detailed Desc ription
The MAX5352/MAX5353 contain a voltage-output digi-
tal-to-analog converter (DAC) that is easily addressed
using a simple 3-wire serial interface. Each IC includes
a 16-bit shift register, and has a double-buffered input
composed of an input register and a DAC register (see
Functional Diagram. In addition to the voltage output,
the amplifier’s negative input is available to the user.
The DAC is an inverted R-2R ladder network that con-
verts a digital input (12 data bits plus one sub-bit) into
an equivalent analog output voltage in proportion to the
applied reference voltage. Figure 1 shows a simplified
circuit diagram of the DAC.
Referenc e Inputs
The reference input accepts positive DC and AC sig-
nals. The voltage at the reference input sets the full-
scale output voltage for the DAC. The reference input
voltage range is 0V to (V
DD
- 1.4V). The output voltage
(V
OUT
) is represented by a digitally programmable volt-
age source, as expressed in the following equation:
V
OUT
= (V
REF
x NB / 4096) x Gain
where NB is the numeric value of the DAC’s binary
input code (0 to 4095), V
REF
is the reference voltage,
and Gain is the externally set voltage gain.
The impedance at the reference input is code depen-
dent, ranging from a low value of 14k
when the DAC
has an input code of 1554 hex, to a high value exceed-
ing several giga ohms (leakage currents) with an input
code of 0000 hex. Because the input impedance at the
reference pin is code dependent, load regulation of the
reference source is important.
In shutdown mode, the MAX5352/MAX5353’s REF input
enters a high-impedance state with a typical input leak-
age current of 0.001μA.
The reference input capacitance is also code depen-
dent and typically ranges from 15pF (with an input
code of all 0s) to 50pF (at full scale).
The MAX873 +2.5V reference is recommended for the
MAX5352.
Output Amplifier
The MAX5352/MAX5353’s DAC output is internally
buffered by a precision amplifier with a typical slew rate
of 0.6V/μs. Access to the output amplifier’s inverting
input provides the user greater flexibility in output gain
setting/signal conditioning (see the Applications
Informationsection).
With a full-scale transition at the MAX5352/MAX5353
output, the typical settling time to ±1/2LSB is 14μs
when loaded with 5k
in parallel with 100pF (loads less
than 2k
degrade performance).
The amplifier’s output dynamic responses and settling
performances are shown in the Typical Operating
Characteristics.
S hutdown Mode
The MAX5352/MAX5353 feature a software-program-
mable shutdown that reduces supply current to a typical
value of 4μA. Writing 111X XXXX XXXX XXXX as the input-
control word puts the device in shutdown mode (Table 1).
In shutdown mode, the amplifier’s output and the refer-
ence input enter a high-impedance state. The serial
interface remains active. Data in the input registers is
retained in shutdown, allowing the MAX5352/MAX5353
OUT
FB
SHOWN FOR ALL 1s ON DAC
MSB
2R
2R
2R
2R
2R
R
R
R
REF
AGND
Figure 1. Simplified DAC Circuit Diagram
_____________________Pin Desc ription
NAME
FUNCTION
1
OUT
DAC Output Voltage
2
CS
Chip-Select Input. Active low.
PIN
3
DIN
Serial-Data Input
4
SCLK
Serial-Clock Input
8
V
DD
Positive Power Supply
7
GND
Ground
6
REF
Reference Voltage Input
5
FB
DAC Output Amplifier Feedback
相關PDF資料 |
PDF描述 |
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| MAX5353AEPA | Low-Power, 12-Bit Voltage-Output DACs with Serial Interface |
| MAX5353BEPA | Low-Power, 12-Bit Voltage-Output DACs with Serial Interface |
| MAX5352BEPA | Low-Power, 12-Bit Voltage-Output DACs with Serial Interface |
| MAX5353BEUA | Low-Power, 12-Bit Voltage-Output DACs with Serial Interface |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5352AEPA+ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 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 |
| MAX5352AEUA | 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 |
| MAX5352AEUA+ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 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 |
| MAX5352AEUA+T | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 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 |
| MAX5352AEUA-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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