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参数资料
| 型号： | MAX5214GUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/17页 |
| 文件大小： | 0K |
| 描述： | DAC 14BIT SGL BUFFERED LP 8-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 3,000 |
| 设置时间： | 14µs |
| 位数： | 14 |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 电压电源： | 单电源 |
| 功率耗散（最大）： | 387mW |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (TR) |
| 输出数目和类型： | 1 电压，单极 |
13
Maxim Integrated
14-/16-Bit, Low-Power, Buffered Output,
Rail-to-Rail DACs with SPI Interface
MAX5214/MAX5216
Table 1. Operating Mode Truth Table (MAX5214)
Serial Interface
The MAX5214/MAX5216 3-wire serial interface is com-
patible with MICROWIRE, SPI, QSPI, and DSP. The
interface provides three inputs: SCLK, CS, and DIN. The
chip-select input (CS) frames the serial data loading at
DIN. Following a chip-select input high-to-low transition,
the data is shifted synchronously and latched into the
input register on each falling edge of the serial-clock
input (SCLK). Each serial word is 16-bit for the MAX5214
and 24-bit for the MAX5216. The first 2 bits are the
control bits followed by 14 data bits (MSB first) for the
MAX5214 and 22 data bits (MSB first) for the MAX5216
as shown in Tables 1 and 2. The serial input register
transfers its contents to the input registers after loading
16/24 bits of data and updates the DAC output immedi-
ately after the data is received on the 16-/24-bit falling
edge of the clock. To initiate a new data transfer, drive
CS high and keep CS high for a minimum of 20ns before
the next write sequence. The SCLK can be either high or
low between CS write pulses. Figures 1 and 2 show the
timing diagram for the complete 3-wire serial interface
transmission. The MAX5216 DAC code is unipolar binary
with VOUT = (code/65,535) x VREF. The MAX5214 DAC
code is unipolar binary with VOUT = (code/16,383) x
VREF. See Tables 1 and 2.
Table 2. Operating Mode Truth Table (MAX5216)
16-BIT WORD
FUNCTION
CONTROL
BITS
DATA BITS
MSB
LSB
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
0
X
No operation
1
0
X
A1
A0
X
Power-down
(see Table 3)
0
1
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
Write through
1
Reserved, Do Not Use
24-BIT WORD
FUNCTION
CONTROL
BITS
DATA BITS
MSB
LSB
D23
D22
D21 D20 D19 D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D8
D7
D6
D5–
D0
0
X
No operation
1
0
X
A1
A0
X
Power-down
(see Table 3)
0
1
B15 B14 B13 B12 B11 B10 B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
X
Write through
1
Reserved, Do Not Use
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