ADS5294_15 Datasheet, PDF (10/81 Pages) Texas Instruments – Octal-Channel 14-Bit 80-MSPS High-SNR and Low-Power ADC

ADS5294
SLAS776D – NOVEMBER 2011 – REVISED SEPTEMBER 2015
www.ti.com
8.5 Electrical Characteristics Dynamic Performance
Typical values are at 25°C, AVDD = 1.8 V, LVDD = 1.8 V, 50% clock duty cycle, –1 dBFS differential analog input, Sample
rate = 80 MSPS, ADC is configured in internal reference mode (unless otherwise noted). MIN and MAX values are across the
full temperature range T_MIN = –40°C to T_MAX = 85°C, AVDD = 1.8 V, LVDD = 1.8 V.
PARAMETERS
TEST CONDITIONS
MIN TYP MAX UNIT
AC PERFORMANCE
SNR
Signal-to-noise ratio
SINAD
Signal-to-noise and distortion ratio
ENOB
DNL
INL
Effective number of bits
Differential nonlinearity
Integral nonlinearity
SFDR
Spurious-free dynamic range
THD
Total harmonic distortion
HD2
Second-harmonic distortion
HD3
Third-harmonic distortion
IMD3
Worse spur excluding HD2, HD3
Intermodualtion distortion
Overload recovery
f_in = 10 MHz, 65 MSPS
f_in = 5 MHz, T_A = 25°C
f_in = 5 MHz, Across temperatures
f_in = 5 MHz, -60 dBFS Input signal amplitude
f_in = 5 MHz, Decimation by two enabled
f_in = 30 MHz
f_in = 65 MHz
f_in = 5 MHz
f_in = 30 MHz
f_in = 65 MHz
f_in = 5 MHz
f_in = 5 MHz
f_in = 5 MHz
f_in = 5 MHz
f_in = 30 MHz
f_in = 65 MHz
f_in = 5 MHz
f_in = 30 MHz
f_in = 65 MHz
f_in = 5 MHz
f_in = 30 MHz
f_in = 65 MHz
f_in = 5 MHz
f_in = 30 MHz
f_in = 65 MHz
f_in = 5 MHz
f_in = 30 MHz
f_in = 65 MHz
f_in = 8 MHz at –7 dBFS, f₂ = 10 MHz at –7 dBFS
Recovery to within 1% of full-scale for 6-dB overload with
sine wave input
75.6
72.8 75.5
71.8
77.3
78.2
74.2
71.7
74.8
73.4
70
12.2
–0.96 ±0.5
2.2
72
84
81
74
70.5
82
80
73.5
73
93
88
85
72
84
81
74
91
83
76
84.5
1
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
Bits
1.7
LSB
5.5
LSB
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
Clock Cycle
XTALK Cross-talk
f_in = 10 MHz, –1-dBFS signal applied on
aggressor channel no signal applied on
victim channel
far channel
near channel
90
dBc
85
dBc
Phase noise
5 MHz, 1-kHz off carrier
–138
dBc/Hz
ANALOG INPUT / OUTPUT
Differential input voltage range
(0-dB gain)
2
V_PP
R_IN
Differential Input Resistance
C_IN
Differential Input Capacitance
Analog input bandwidth
At DC
At DC
With a 50-Ω source impedance
2
kΩ
3.2
pF
550
MHz
Analog input common-mode current
(per input pin)
1.6
µA/MSPS
VCM common-mode output voltage
0.95
V
VCM output current capability
5
mA
10
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