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參數(shù)資料
| 型號： | DS2187 |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | Digital Transmission Interface |
| 英文描述： | DATACOM, PCM TRANSCEIVER, PDIP18 |
| 封裝： | 0.300 INCH, DIP-18 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 330K |
| 代理商： | DS2187 |
MAX9010–MAX9013
SC70, 5ns, Low-Power, Single-Supply,
Precision TTL Comparators
_______________________________________________________________________________________
7
Detailed Description
These high-speed comparators have a unique design
that prevents oscillation when the comparator is in its
linear region, so no minimum input slew rate is required.
Many high-speed comparators oscillate in their linear
region. One common way to overcome this oscillation is
to add hysteresis, but it results in a loss of resolution
and bandwidth.
Latch Function
The MAX9011/MAX9013 provide a TTL-compatible latch
function that holds the comparator output state (Figure 1).
With LE driven to a TTL low or grounded, the latch is
transparent and the output state is determined by the
input differential voltage. When LE is driven to a TTL high,
the existing output state is latched, and the input differen-
tial voltage has no further effect on the output state.
Input Amplifier
A comparator can be thought of as having two sec-
tions: an input amplifier and a logic interface. The input
amplifiers of these devices are fully differential, with
input offset voltages typically 0.7mV at +25°C. Input
common-mode range extends from 200mV below
ground to 1.9V below the positive power-supply rail. The
total common-mode range is 3.3V when operating from a
5V supply. The amplifiers have no built-in hysteresis. For
highest accuracy, do not add hysteresis. Figure 2 shows
how hysteresis degrades resolution.
Input Voltage Range
Although the common-mode input voltage range is
restricted to -0.2V to (VCC - 1.9V), either or both inputs
can go to either absolute maximum voltage limit, i.e.,
from -0.3V to (VCC + 0.3V), without damage. The com-
parator will make a correct (and fast) logic decision
provided that at least one of the two inputs is within the
specified common-mode range. If both inputs are out-
side the common-mode range, the comparator output
state is indeterminate.
Resolution
A comparator’s ability to resolve a small-signal differ-
ence, its resolution, is affected by various factors. As
with most amplifiers and comparators, the most signifi-
cant factors are the input offset voltage (VOS) and the
common-mode and power-supply rejection ratios
(CMRR, PSRR). If source impedance is high, input off-
set current can be significant. If source impedance is
unbalanced, the input bias current can introduce
another error. For high-speed comparators, an addi-
PIN
MAX9010
MAX9011
MAX9012
MAX9013
NAME
FUNCTION
11
—
7
OUT
Comparator Output. OUT is high when IN+ is more
positive than IN-.
2
5
6
GND
Ground
33
—
2
IN+
Noninverting Input
44
—
3
IN-
Inverting Input
5, 6
6
8
1
VCC
Positive Power-Supply Voltage. Pins 5 and 6 of the
MAX9010 must BOTH be connected to the power-
supply rail. Bypass with a 0.1F capacitor.
—
5
—
5
LE
Latch Enable Input
——
1
—
INA+
Noninverting Input, Channel A
——
2
—
INA-
Inverting Input, Channel A
——
3
—
INB+
Noninverting Input, Channel B
——
4
—
INB-
Inverting Input, Channel B
——
6
—
OUTB
Comparator Output, Channel B
——
7
—
OUTA
Comparator Output, Channel A
———
4
N.C.
No Connection. Not internally connected. Connect to
GND for best results.
———
8
OUT
Comparator Complementary Output
Pin Description
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS2187+ | 功能描述:網(wǎng)絡控制器與處理器 IC Receive Line Interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS2187S | 功能描述:網(wǎng)絡控制器與處理器 IC Receive Line Interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS2187S/T&R | 制造商:Maxim Integrated Products 功能描述:IC RECEIVE LINE INTERFACE 20SOIC |
| DS2187S/T&R | 功能描述:網(wǎng)絡控制器與處理器 IC Receive Line Interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS2187S+ | 功能描述:網(wǎng)絡控制器與處理器 IC Receive Line Interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
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