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參數(shù)資料
| 型號(hào)： | THS1240C |
| 廠(chǎng)商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | ADC |
| 英文描述： | 1-CH 12-BIT DELTA-SIGMA ADC, PARALLEL ACCESS, PQFP48 |
| 封裝： | POWER, PLASTIC, TQFP-48 |
| 文件頁(yè)數(shù)： | 15/19頁(yè) |
| 文件大?。?/td> | 424K |
| 代理商： | THS1240C |
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THS1240
12-BIT 40 MSPS IF SAMPLING COMMUNICATIONS
ANALOG-TO-DIGITAL CONVERTER
SLAS279A – JUNE 2000 – REVISED AUGUST 2000
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
ac specifications over recommended operating free-air temperature range, AVDD = DVDD = 5 V,
DRVDD = 3.3 V, internal references, CLK = 40 MHz, analog input at –2 dBFS, single-ended clock
source at 40 MHz with 50% duty cycle (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
fIN = 2.2 MHz
64.6
SNR
Signal to noise ratio
fIN = 15.5 MHz
62
64.5
dB
SNR
Signal-to-noise ratio
fIN = 31 MHz
64
dB
fIN = 70 MHz
64
fIN = 2.2 MHz
63.3
SINAD
Signal to noise and distortion
fIN = 15.5 MHz
60
64
dB
SINAD
Signal-to-noise and distortion
fIN = 31 MHz
63.2
dB
fIN = 70 MHz
55.7
ENOB
Effective number of bits
fIN = 15.5 MHz
9.7
10.3
bits
THD
Total harmonic distortion
fIN = 15.5 MHz
–72
–69
dBc
fIN = 2.2 MHz
72.7
SFDR
Spurious free dynamic range
fIN = 15.5 MHz
70
80.4
dBc
SFDR
Spurious-free dynamic range
fIN = 31 MHz
77
dBc
fIN = 70 MHz
59.6
d
fIN = 2.2 MHz
82
2nd Harmonic
Distortion
fIN = 15.5 MHz
–87
–70
dBc
2nd Harmonic
Distortion
fIN = 31 MHz
–77
dBc
fIN = 70 MHz
–60.5
d
fIN = 2.2 MHz
–73
3rd Harmonic
Distortion
fIN = 15.5 MHz
–80.4
–70
dBc
3rd Harmonic
Distortion
fIN = 31 MHz
–77
dBc
fIN = 70 MHz
–60
Two tone SFDR
F1 = 14.9 MHz,
F2 = 15.6 MHz,
Analog inputs at – 8 dBFS each
72
dBc
All typical values are at TA = 25°C.
operating characteristics over recommended operating conditions, AVDD = DVDD = 5 V,
DRVDD = 3.3 V
switching specifications
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Aperture delay, td(A)
120
ps
Aperture jitter
1
ps RMS
Output delay td(O), after falling edge of CLK+
Digital outputs driving a 15 pF load each
13
ns
Pipeline delay td(PIPE)
6.5
CLK
Cycle
All typical values are at TA = 25°C.
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