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| 型号： | LTC1408CUH#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 5/20页 |
| 文件大小： | 0K |
| 描述： | IC ADC 14BIT 600KSPS 32-QFN |
| 标准包装： | 73 |
| 位数： | 14 |
| 采样率（每秒）： | 600k |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 15mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN 裸露焊盘（5x5） |
| 包装： | 管件 |
| 输入数目和类型： | 12 个单端，单极；12 个单端，双极；6 个差分，单极；6 个差分，双极 |
| 产品目录页面： | 1346 (CN2011-ZH PDF) |
| 配用： | DC887A-ND - BOARD SAR ADC LTC1408 |
13
LTC1408
1408fa
LTC1566-1: Low Noise 2.3MHz Continuous Time
Lowpass Filter.
LT
1630: Dual 30MHz Rail-to-Rail Voltage FB Amplifier.
2.7V to
±15V supplies. Very high AVOL, 500V offset and
520ns settling to 0.5LSB for a 4V swing. THD and noise
are – 93dB to 40kHz and below 1LSB to 320kHz (AV = 1,
2VP-P into 1k, VS = 5V), making the part excellent for AC
applications (to 1/3 Nyquist) where rail-to-rail perfor-
mance is desired. Quad version is available as LT1631.
LT1632: Dual 45MHz Rail-to-Rail Voltage FB Amplifier.
2.7V to
±15V supplies. Very high AVOL, 1.5mV offset and
400ns settling to 0.5LSB for a 4V swing. It is suitable for
applications with a single 5V supply. THD and noise are
– 93dB to 40kHz and below 1LSB to 800kHz (AV = 1,
2VP-P into 1k, VS = 5V), making the part excellent for AC
applications where rail-to-rail performance is desired.
Quad version is available as LT1633.
LT1801: 80MHz GBWP, –75dBc at 500kHz, 2mA/ampli-
fier, 8.5nV/
√Hz.
LT1806/LT1807: 325MHz GBWP, –80dBc distortion at
5MHz, unity gain stable, rail-to-rail in and out,
10mA/amplifier, 3.5nV/
√Hz.
LT1810: 180MHz GBWP, –90dBc distortion at 5MHz,
unity gain stable, rail-to-rail in and out, 15mA/amplifier,
16nV/
√Hz.
LT1818/LT1819: 400MHz, 2500V/
s, 9mA, Single/Dual
Voltage Mode Operational Amplifier.
LT6200: 165MHz GBWP, –85dBc distortion at 1MHz,
unity gain stable, rail-to-rail in and out, 15mA/amplifier,
0.95nV/
√Hz.
LT6203: 100MHz GBWP, –80dBc distortion at 1MHz,
unity gain stable, rail-to-rail in and out, 3mA/amplifier,
1.9nV/
√Hz.
LT6600: Amplifier/Filter Differential In/Out with 10MHz
Cutoff.
CHOOSING AN INPUT AMPLIFIER
Choosing an input amplifier is easy if a few requirements
are taken into consideration. First, to limit the magnitude
of the voltage spike seen by the amplifier from charging
the sampling capacitor, choose an amplifier that has a low
output impedance (< 100
) at the closed-loop bandwidth
frequency. For example, if an amplifier is used in a gain of
1 and has a unity-gain bandwidth of 50MHz, then the
output impedance at 50MHz must be less than 100
. The
second requirement is that the closed-loop bandwidth
must be greater than 40MHz to ensure adequate small-
signal settling for full throughput rate. If slower op amps
are used, more time for settling can be provided by
increasing the time between conversions. The best choice
for an op amp to drive the LTC1408 depends on the
application. Generally, applications fall into two catego-
ries: AC applications where dynamic specifications are
most critical and time domain applications where DC
accuracy and settling time are most critical. The following
list is a summary of the op amps that are suitable for
driving the LTC1408. (More detailed information is avail-
able in the Linear Technology Databooks and on the
website at www.linear.com.)
APPLICATIO S I FOR ATIO
WU
UU
LinearView is a trademark of Linear Technology Corporation.
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