參數(shù)資料
型號(hào): ADSQ-1410S
廠商: MURATA POWER SOLUTIONS INC
元件分類: ADC
中文描述: QUAD 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, DMA66
封裝: TDIP-66
文件頁(yè)數(shù): 3/6頁(yè)
文件大?。?/td> 541K
代理商: ADSQ-1410S
Quad 14-Bit, 10MPS Sampling
A/D Converter
ADSQ-1410S
MDA_ADSQ1410S_A03
Page 3 of 6
ENABLE
V
50% V
t
PZL
Output
waveform 1
S1 at V
CC
50% V
CC
CC
Output
waveform 1
S1 at GND
t
PZL
50% V
CC
50% V
CC
t
PZH
V
OL
+0.3V
V
OH
+0.3V
–V
V
V
–0V
0V
CC
CC
OL
OH
Voltage Waveforms
Enable and Disable Times
Low- and High-Level Enabling
www.murata-ps.com
Technical enquiries email:
sales@murrata-ps.com, tell: +1 508 339 3000
TECHNICAL NOTES
1. Rated performance requires using good high-frequency circuit board
layout techniques. Connect the digital and analog grounds to one point,
the analog ground plane beneath the converter. Due to the inductance
and resistance of the power supply return paths, return the analog and
digital ground separately to the power supplies.
CALIBRATION PROCEDURE
The ADSQ-1410 offset is trimmed at the factory with the Offset Adjust pins
tied to +1.0V. Bi-directional offset adjustment is attained by varying Offset
Adjust pins from 0 to +1V to decrease output codes, or from +1V to +2V to
increase output codes.
Gain adjustment is attained by varying input series resistor.
See Fig. 4 for Input Stage Functional Diagram.
Table 2. Output Coding
Output Coding
MSB LSB
Input Range
±2.5V
Bipolar Scale
11 1111 1111 1111
11 1100 0000 0000
11 0000 0000 0000
10 0000 0000 0000
01 0000 0000 0000
00 1000 0000 0000
00 0000 0000 0001
00 0000 0000 0000
+2.499695
+1.875000
+1.250000
±0.000000
–1.250000
–1.875000
–2.499695
–2.500000
+FS – 1LSB
3/4 FS
+1/2 FS
0
–1/2 FS
–3/4 FS
–FS +1LSB
–FS
Figure 4. ADSQ-1410 Quad Input Stage
Parameter
Start Conv Period
Start Conv Pulse width High
Start Conv Pulse width Lo
Output Delay
Symbol
tc
tch
tcl
tod
tod
tod
Time
100
45
45
13
18
27
Unit
ns min
ns min
ns min
ns min
ns typ
ns max
Parameter
Hi-Z to Active HI
Hi-Z to Active LO
Active HI to Hi-Z
Active LO to Hi-Z
Symbol
t-pZH
t-pZL
t-pHZ
t-pLZ
Typ
6.6ns
6.6ns
7.8ns
7.8ns
Max
10.6ns
10.6ns
11.5ns
11.5ns
DATA
OUTPUT
t
Data N-3
Data N-2
Data N-1
Data N
C
t
CH
t
CL
t
OD
START
CONV
ANALOG
INPUT
N
N + 1
N + 2
(Enable Pin = LO)
ADSQ-1410 Timing Diagram
Waveform 1 is for an output with internal conditions such that the output is active LO and
Hi-Z is pulled 3.3VD through 1k resistor
Waveform 2 is for an output with internal conditions such that the output is active LO and
Hi-Z is pulled GND through 1k resistor
A and B outputs share AB Output Bus (pins 54-66) and C and D outputs
share CD Output Bus (pins 34-47).
NOTE: Outputs are enabled when ENABLE pins = LO (Hi-Z = HI). Caution
must be taken to assure that shared outputs are not enabled at the same
time.
TIMING
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