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参数资料
| 型号： | LTC2704IGW-12#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 22/22页 |
| 文件大小： | 0K |
| 描述： | IC DAC 12BIT QUAD VOUT 44-SSOP |
| 产品培训模块： | LTC275x 18-Bit DAC |
| 标准包装： | 27 |
| 设置时间： | 8µs |
| 位数： | 12 |
| 数据接口： | 串行，SPI? |
| 转换器数目： | 4 |
| 电压电源： | 模拟和数字，双 ± |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-BSOP（0.295"，7.50mm 宽） |
| 供应商设备封装： | 44-SSOP |
| 包装： | 管件 |
| 输出数目和类型： | 4 电压，单极；4 电压，双极 |
| 采样率（每秒）： | * |
LTC2704
9
2704fd
CS/LD (Pin 10): Synchronous Chip Select and Load Pin.
SDI (Pin 11): Serial Data Input. Data is clocked in on the
rising edge of the serial clock when CS/LD is low.
SRO (Pin 12): Serial Readback Data Output. Data is clocked
out on the falling edge of SCK. Readback data begins
clocking out after the last address bit A0 is clocked in.
SCK (Pin 13): Serial Clock.
CLR (Pin 14): Asynchronous Clear Pin. When this pin is
low, all code and span B2 registers are cleared to zero.
All DAC outputs are cleared to zero volts.
RFBD (Pin 16): DAC D Voltage Output Feedback Resis-
tor Pin.
OUTD (Pin 17): DAC D Voltage Output Pin. For best load
regulation, this open-loop amplier output is connected
to RFBD as close to the load as possible.
C1D (Pin 18): Feedback Capacitor Connection for DAC
D Output. This pin provides direct access to the negative
input of the channel D output amplier.
VOSD (Pin 19): Offset Adjust for DAC D. Nominal input
range is ±5V. VOS(DAC D) = –0.01 V(VOSD) [0V to 5V,
±2.5V modes]. See Operation section.
AGNDD (Pin 20): DAC D Signal Ground. High impedance
input, does not carry supply currents. Tie to clean analog
ground.
REFG2 (Pin 21): Reference 2 Ground. High impedance
input, does not carry supply currents. Tie to clean analog
ground.
REFM2 (Pin 23): Reference 2 Inverting Amp Output. The
gain from REF2 to REFM2 is –1. Can swing to within 0.5V
of the analog supplies V+/V–.
REF2 (Pin 24): DAC C and DAC D Reference Input.
V+2 (Pin 25): Analog Positive Supply for DACs C and D.
Typically 15V. 4.5V to 16.5V Range. Can be different from
V+1.
AGNDC (Pin 26): DAC C Signal Ground. High impedance
input, does not carry supply currents. Tie to clean analog
ground.
VOSC (Pin 27): Offset Adjust for DAC C. Nominal input
range is ±5V. VOS(DAC C) = –0.01 V(VOSC) [0V to 5V,
±2.5V modes]. See Operation section.
C1C (Pin 28): Feedback Capacitor Connection for DAC C
Output. This pin provides direct access to the negative
input of the channel C output amplier.
OUTC (Pin 29): DAC C Voltage Output Pin. For best load
regulation, this open-loop amplier output is connected
to RFBC as close to the load as possible.
RFBC (Pin 30): DAC C Output Feedback Resistor Pin.
AGND (Pin 32):
Analog Ground Pin. Tie to clean analog
ground.
GND (Pin 33): Ground Pin. Tie to clean analog ground.
VDD (Pin 34): Logic Supply. 2.7V to 5.5V Range.
RFLAG (Pin 35): Reset Flag Pin. An active low output is
asserted when there is a power on reset or a clear event.
Returns high when an update command is executed.
RFBB (Pin 37): DAC B Output Feedback Resistor Pin.
OUTB (Pin 38): DAC B Voltage Output Pin. For best load
regulation, this open-loop amplier output is connected
to RFBB as close to the load as possible.
C1B (Pin 39): Feedback Capacitor Connection for DAC B
Output. This pin provides direct access to the negative
input of the channel B output amplier.
VOSB (Pin 40): Offset Adjust for DAC B. Nominal input
range is ±5V. VOS(DAC B) = –0.01 V(VOSB) [0V to 5V,
±2.5V modes]. See Operation section.
AGNDB (Pin 41): DAC B Signal Ground. High impedance
input, does not carry supply currents. Tie to clean analog
ground.
V+1 (Pin 42): Analog Positive Supply for DACs A DND
B. Typically 15V. 4.5V to 16.5V Range. Can be different
from V+2.
REF1 (Pin 43): DAC A and DAC B Reference Input.
REFM1 (Pin 44): Reference 1 Inverting Amp Output. The
gain from REF1 to REFM1 is –1. Can swing to within 0.5V
of the analog supplies V+/V–.
PIN FUNCTIONS
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