參數(shù)資料
型號： TLC2554CPW
廠商： Texas Instruments, Inc.
英文描述： 5-V, 12-BIT, 400 KSPS, 4/8 CHANNEL, LOW POWER, SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTO POWER DOWN
中文描述： 5五，12位400 ksps的，4 / 8通道，低功耗，串行模數(shù)位自動開機和下變頻器
文件頁數(shù)： 21/37頁
文件大小： 566K
代理商： TLC2554CPW
TLC2554, TLC2558
5-V, 12-BIT, 400 KSPS, 4/8 CHANNEL, LOW POWER,
SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTO POWER DOWN
SLAS220A –JUNE 1999
21
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics
over recommended operating free-air temperature range, V
CC
= V
REFP
= 4.5 V to
5.5 V, SCLK frequency = 20 MHz at 5 V, (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
OH
V
OL
High-level output voltage
V
CC
= 5.5 V, I
OH
= –20
μ
A at 30 pF load
V
CC
= 5.5 V, I
OL
= 20
μ
A at 30 pF load
V
O
= V
CC
V
O
= 0
V
I
= V
CC
V
I
= 0 V
CS at 0 V, Ext ref
2.4
V
Low-level output voltage
0.4
V
I
OZ
Off-state output current
O s a e ou u cu e
(high-impedance-state)
CS = V
CC
1
2.5
μ
A
–1
-2.5
I
IH
I
IL
High-level input current
0.005
2.5
μ
A
Low-level input current
–0.005
2.5
μ
A
I
CC
Operating supply current, normal sampling
O e a
y cu e , o
(short)
V
CC
= 4.5 V to 5.5 V
V
CC
= 4.5 V to 5.5 V
V
CC
= 4.5 V to 5.5 V
V
CC
= 4.5 V to 5.5 V
4
mA
a sa
CS at 0 V, Int ref
6
mA
I
CC
Operating supply current extended sampling
Operating supply current, extended sampling
CS at 0 V, Ext ref
1.9
mA
CS at 0 V, Int ref
2
mA
Internal reference supply current
CS at 0 V, V
CC
= 4.5 V to 5.5 V
For all digital inputs,
0
≤
V
I
≤
0.3 V or V
I
≥
V
CC
– 0.3 V,
SCLK = 0, V
CC
= 4.5 V to 5.5 V,
Ext clock
2
mA
I
CC(PD)
Power-down supply current
0.1
1
μ
A
I
CC(AUTOPWDN)
Auto power-down current
For all digital inputs,
0
≤
V
I
≤
0.3 V or V
I
≥
V
CC
– 0.3 V,
SCLK = 0, V
CC
= 4.5 V to 5.5 V,
Ext clock, Ext ref
5
μ
A
Selected channel leakage current
Selected channel at V
CC
Selected channel at 0 V
1
μ
A
–1
Maximum static analog reference current into
REFP (use external reference)
V
REFP
= V
CC
= 5.5 V, V
REFM
= GND
1
μ
A
C
i
Input capacitance
Analog inputs
45
50
pF
Control Inputs
5
25
Z
i
Input MUX ON resistance
V
CC
= 5.5 V
500
All typical values are at VCC = 5 V, TA = 25
°
C.
800
μ
A if internal reference is used.
ac specifications
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SINAD
Signal-to-noise ratio +distortion
fI = 12 kHz at 400 KSPS
fI = 12 kHz at 400 KSPS
fI = 12 kHz at 400 KSPS
fI = 12 kHz at 400 KSPS
69
71
dB
THD
Total harmonic distortion
–82
–76
dB
ENOB
Effective number of bits
11.6
Bits
SFDR
Spurious free dynamic range
–84
–75
dB
Analog input
Full power bandwidth, –3 dB
1
MHz
Full power bandwidth, –1 dB
500
kHz
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