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参数资料
| 型号： | LTC1542IS8#TR |
| 厂商： | Linear Technology |
| 文件页数： | 11/12页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP/COMP/REF MICROPWR 8SOIC |
| 标准包装： | 2,500 |
| 类型： | 放大器，比较器，参考 |
| 应用： | GSM |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
8
LTC1541/LTC1542
15412fd
AMPOUT (Pin 1): Op Amp Output. The output can swing
from rail-to-rail while driving a capacitive load of up to
1000pF. The output can source and sink 0.7mA (min).
AMPIN– (Pin 2): Inverting Input of Op Amp. The input
common mode ranges from VSS to (VCC – 1.3V). The input
current is typically 10pA at 25
°C.
AMPIN+ (Pin 3): Noninverting Input of Op Amp. The input
common mode ranges from VSS to (VCC – 1.3V). The input
current is typically 10pA at 25
°C.
VSS (Pin 4): Negative Supply or Ground Connection.
COMPIN+ (Pin 5): Noninverting Input of Comparator. The
input common mode ranges from VSS to (VCC – 1.3V). The
input current is typically 10pA at 25
°C.
7
8
5
1
2
3
4
LTC1542
LTC1541 BD2
–
+
COMPIN+
COMPIN–
6
COMPOUT
VCC
COMP
OP AMP
AMPOUT
AMPIN–
AMPIN+
VSS
+
–
+
–
7
8
5
1
2
3
4
LTC1541
LTC1541 BD
–
+
COMPIN+
6
REF
COMPOUT
VCC
COMP
OP AMP
AMPOUT
AMPIN–
AMPIN+
VSS
×1
UU
U
PI FU CTIO S
BLOCK DIAGRA S
W
Op Amp Open-Loop Gain and
Phase vs Frequency
FREQUENCY (Hz)
OPEN-LOOP
GAIN
(dB)
PHASE
SHIFT
(DEGREES)
120
100
80
60
40
20
0
–20
–40
0
–45
–90
–135
–180
–225
–270
–315
–360
10
1k
10k
1M
1541/42 TPC13
100
100k
VCC = 5V
VSS = GND
RLOAD = 100k
PHASE
GAIN
REF (Pin 6) (LTC1541): Reference Output. VREF = 1.2V
±1% over industrial temperature range, and is also con-
nected to inverting comparator input internally. This de-
vice can source up to 2mA and sink up to 20
A. The output
can drive a bypass capacitor of up to 0.01
F without
oscillation.
COMPIN– (Pin 6) (LTC1542): Inverting Input of Compara-
tor. The input common mode ranges from VSS to
(VCC – 1.3V). The input current is typically 10pA at 25°C.
COMPOUT (Pin 7): Comparator Output. The output can
source 20mA and sink 5mA.
VCC (Pin 8): Positive Supply, 2.5V ≤ VCC ≤ 12.6V. The supply
bypass capacitors are not required if the supply impedance
is low. For single supply applications, it is a good general
practice to bypass VCC with a 0.1F capacitor to ground.
TYPICAL PERFOR A CE CHARACTERISTICS
UW
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