參數(shù)資料
型號: MAX1003CAX
廠商: Maxim Integrated Products
文件頁數(shù): 8/12頁
文件大?。?/td> 0K
描述: IC ADC DUAL 6-BIT 90MSPS 36-SSOP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 30
位數(shù): 6
采樣率(每秒): 90M
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 2
功率耗散(最大): 941mW
電壓電源: 單電源
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 36-BSOP(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 36-SSOP
包裝: 管件
輸入數(shù)目和類型: 4 個單端,單極;2 個差分,單極
_______________Detailed Description
Converter Operation
The MAX1003 contains two 6-bit analog-to-digital con-
verters (ADCs), a buffered voltage reference, and oscil-
lator circuitry. The ADCs use a flash conversion
technique to convert an analog input signal into a 6-bit
parallel digital output code. The MAX1003’s unique
design includes 63 fully differential comparators and a
proprietary encoding scheme that ensures no more
than 1LSB dynamic encoding error. The control logic
interfaces easily to most digital signal processors
(DSPs) and microprocessors (Ps) with +3.3V CMOS-
compatible logic interfaces. Figure 1 shows the
MAX1003 in a typical application.
Programmable Input Amplifiers
The MAX1003 has two (I and Q) programmable-gain
input amplifiers with a -0.5dB bandwidth of 55MHz and
true differential inputs. To maximize performance in
high-speed systems, each amplifier has less than 5pF
of input capacitance. The input amplifier gain is pro-
grammed, via the GAIN pin, to provide three possible
input full-scale ranges (FSRs) as shown in Table 1.
MAX1003
Low-Power, 90Msps, Dual 6-Bit ADC
_______________________________________________________________________________________
5
______________________________________________________________Pin Description
PIN
Gain-Select Input. Sets input full-scale range: 125/250/500mVp-p (Table 1).
GAIN
1
FUNCTION
NAME
Positive I-Channel Offset-Correction Compensation. Connect a 0.22F capacitor for AC-coupled
inputs. Ground for DC-coupled inputs.
IOCC+
2
I-Channel Noninverting Analog Input
IIN+
4
Negative I-Channel Offset-Correction Compensation. Connect a 0.22F capacitor for AC-coupled
inputs. Ground for DC-coupled inputs.
IOCC-
3
+5V ±5% Supply. Bypass with a 0.01F capacitor to GND (pin 7).
VCC
6
+5V ±5% Supply. Bypass with a 0.01F capacitor to GND (pin 11).
VCC
8
Analog Ground
GND
7, 11, 12,
18, 19
I-Channel Inverting Analog Input
IIN-
5
Negative Oscillator/Clock Input
TNK-
10
Q-Channel Inverting Analog Input
QIN-
14
+5V ±5% Supply. Bypass with a 0.01F capacitor to GND (pin 12).
VCC
13
Negative Q-Channel Offset-Correction Compensation. Connect a 0.22F capacitor for AC-coupled
inputs. Ground for DC-coupled inputs.
QOCC-
16
Q-Channel Digital Outputs 0–5. DQ5 is the most significant bit (MSB).
DQ5–DQ0
20–25
Positive Q-Channel Offset-Correction Compensation. Connect a 0.22F capacitor for AC-coupled
inputs. Ground for DC-coupled inputs.
QOCC+
17
Q-Channel Noninverting Analog Input
QIN+
15
Positive Oscillator/Clock Input
TNK+
9
Digital Output Ground
OGND
27
I-Channel Digital Outputs 0–5. DI5 is the most significant bit (MSB).
DI0–DI5
30–35
Digital Clock Output. Frames the output data.
DCLK
29
Digital Output Supply, +3.3V ±300mV. Bypass each with a 47pF capacitor to OGND (pin 27).
VCCO
26, 28
+5V ±5% Supply. Bypass with a 0.01F capacitor to GND (pin 19).
VCC
36
250
Open
125
VCC
GAIN
500
GND
INPUT FULL-SCALE RANGE
(mVp-p)
Table 1. Input Amplifier Programming
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