參數(shù)資料
型號: MAX9012ESA+T
廠商: Maxim Integrated Products
文件頁數(shù): 10/12頁
文件大?。?/td> 0K
描述: IC COMPARATOR TTL 8-SOIC
產(chǎn)品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 2,500
類型: 通用
元件數(shù): 2
輸出類型: TTL
電壓 - 電源,單路/雙路(±): 4.5 V ~ 5.5 V
電壓 - 輸入偏移(最小值): 3mV @ 5.5V
電流 - 輸入偏壓(最小值): 0.5µA @ 5V
電流 - 輸出(標準): 40mA
電流 - 靜態(tài)(最大值): 4.2mA
CMRR, PSRR(標準): 95dB CMRR,82dB PSRR
傳輸延遲(最大): 9ns
工作溫度: -40°C ~ 85°C
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
安裝類型: 表面貼裝
包裝: 帶卷 (TR)
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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MAX9012EUA+T 功能描述:校驗器 IC 5ns Precision TTL Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓(最大值):6 mV 電源電流(最大值):1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
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MAX9013 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:SC70, 5ns, Low-Power, Single-Supply, Precision TTL Comparators