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參數(shù)資料
| 型號： | MAX5151BEEE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | DAC |
| 英文描述： | Low-Power, Dual, 13-Bit Voltage-Output DACs with Serial Interface |
| 中文描述： | DUAL, SERIAL INPUT LOADING, 16 us SETTLING TIME, 13-BIT DAC, PDSO16 |
| 封裝： | 0.150 INCH, 0.025 INCH PITCH, QSOP-16 |
| 文件頁數(shù)： | 9/16頁 |
| 文件大小： | 188K |
| 代理商： | MAX5151BEEE |
_______________Detailed Desc ription
The MAX5150/MAX5151 dual, 13-bit, voltage-output
DACs are easily configured with a 3-wire serial inter-
face. These devices include a 16-bit data-in/data-out
shift register, and each DAC has a double-buffered
input composed of an input register and a DAC register
(see Functional Diagram. In addition, trimmed internal
resistors produce an internal gain of +2 that maximizes
output voltage swing. The amplifier’s offset-adjust pin
allows for a DC shift in the DAC’s output.
Both DACs use an inverted R-2R ladder network that
produces a weighted voltage proportional to the input
voltage value. Each DAC has its own reference input to
facilitate independent full-scale values. Figure 1
depicts a simplified circuit diagram of one of the two
DACs.
Referenc e Inputs
The reference inputs accept both AC and DC values
with a voltage range extending from 0V to (V
DD
- 1.4V).
Determine the output voltage using the following equa-
tion (OS_ = AGND):
V
OUT
= (V
REF
x NB / 8192) x 2
where NB is the numeric value of the DAC’s binary
input code (0 to 8191) and V
REF
is the reference volt-
age.
The reference input impedance ranges from 14k
(1555 hex) to several giga ohms (with an input code of
0000 hex). The reference input capacitance is code
dependent and typically ranges from 15pF with an
input code of all zeros to 50pF with an input code of all
ones.
Output Amplifier
The output amplifiers on the MAX5150/MAX5151 have
internal resistors that provide for a gain of +2 when OS_
is connected to AGND. These resistors are trimmed to
minimize gain error. The output amplifiers have a typi-
cal slew rate of 0.75V/μs and settle to 1/2LSB within
16μs, with a load of 10k
in parallel with 100pF. Loads
less than 2k
degrade performance.
The OS_ pin can be used to produce an adjustable off-
set voltage at the output. For instance, to achieve a 1V
offset, apply -1V to the OS_ pin to produce an output
range from 1V to (1V + V
REF
x 2). Note that the DAC’s
output range is still limited by the maximum output volt-
age specification.
Power-Down Mode
The MAX5150/MAX5151 feature a software-program-
mable shutdown mode that reduces the typical supply
current to 2μA. The two DACs can be shutdown inde-
pendently, or simultaneously using the appropriate pro-
gramming command. Enter shutdown mode by writing
the appropriate input-control word (Table 1). In shut-
down mode, the reference inputs
and amplifier out-
M
Low-Power, Dual, 13-Bit Voltage-Output DACs
with S erial Interfac e
_______________________________________________________________________________________
9
Digital Ground
DGND
9
Serial-Data Output
DOUT
10
User-Programmable Output
UPO
11
Power-Down Lockout. The device can-
not be powered down when
PDL
is low.
PDL
12
Reference for DAC B
REFB
13
Clears all DACs and registers
(resets to 0).
CL
5
Chip-Select Input
CS
6
Serial-Data Input
DIN
7
Serial-Register Clock Input
SCLK
8
Reference for DAC A
REFA
4
DAC A Offset Adjustment
OSA
3
PIN
DAC A Output Voltage
OUTA
2
Analog Ground
AGND
1
FUNCTION
NAME
14
OSB
DAC B Offset Adjustment
15
OUTB
DAC B Output Voltage
16
V
DD
Positive Power Supply
OUT_
OS_
R
R
SHOWN FOR ALL 1s ON DAC
D0
D10
D11
D12
2R
2R
2R
2R
2R
R
R
R
REF_
AGND
Figure 1. Simplified DAC Circuit Diagram
_____________________Pin Desc ription
相關PDF資料 |
PDF描述 |
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| MAX5150BEEE | Low-Power, Dual, 13-Bit Voltage-Output DACs with Serial Interface |
| MAX5153AEEE | Circular Connector; No. of Contacts:37; Series:MS27466; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Socket; Circular Shell Style:Wall Mount Receptacle RoHS Compliant: No |
| MAX5152ACEE | Low-Power, Dual, 13-Bit Voltage-Output DACs with Configurable Outputs |
| MAX5152ACPE | CAP .27UF 250V PEN FILM 3925 10% |
| MAX5152AEPE | CAP .0033UF 250V PEN FLM 1913 5% |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5151BEEE+ | 功能描述:數(shù)模轉換器- DAC 13-Bit 2Ch Precision DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉換速率: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 |
| MAX5151BEEE+T | 功能描述:數(shù)模轉換器- DAC 13-Bit 2Ch Precision DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉換速率: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 |
| MAX5151BEEE-T | 功能描述:數(shù)模轉換器- DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉換速率: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 |
| MAX5151BEPE | 功能描述:數(shù)模轉換器- DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉換速率: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 |
| MAX5151BEPE+ | 功能描述:數(shù)模轉換器- DAC 13-Bit 2Ch Precision DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉換速率: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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