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参数资料
| 型号： | THS1240IPHP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | ADC |
| 英文描述： | 1-CH 12-BIT DELTA-SIGMA ADC, PARALLEL ACCESS, PQFP48 |
| 封装： | POWER, PLASTIC, TQFP-48 |
| 文件页数： | 16/20页 |
| 文件大小： | 450K |
| 代理商： | THS1240IPHP |
THS1240
12-BIT 40 MSPS IF SAMPLING COMMUNICATIONS
ANALOG-TO-DIGITAL CONVERTER
SLAS279D – JUNE 2000 – REVISED JANUARY 2001
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
fIN = 15.5 MHz
64
SNR
Signal-to-noise ratio
fIN = 15.5 MHz, V(IN) = –0.5 dBFS
63
65.5
dB
fIN = 31 MHz
64
fIN = 70 MHz
64
fIN = 2.2 MHz
63.3
fIN = 15.5 MHz
64
SINAD
Signal-to-noise and distortion
fIN = 15.5 MHz, V(IN) = –0.5 dBFS
62
64.5
dB
fIN = 31 MHz
63.2
fIN = 70 MHz
55.7
ENOB
Effective number of bits
fIN = 15.5 MHz
10.2
bits
ENOB
Effective number of bits
fIN = 15.5 MHz, V(IN) = –0.5 dBFS
10
10.4
bits
THD
Total harmonic distortion
fIN = 15.5 MHz
–72
–68
dBc
THD
Total harmonic distortion
fIN = 15.5 MHz, V(IN) = –0.5 dBFS
–71
dBc
fIN = 2.2 MHz
73
fIN = 15.5 MHz
70
77
SFDR
Spurious-free dynamic range
fIN = 15.5 MHz, V(IN) = –0.5 dBFS
72
dBc
fIN = 31 MHz
77
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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