MAX19705ETM Просмотр технического описания (PDF) - Maxim Integrated
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MAX19705ETM Datasheet PDF : 37 Pages
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10-Bit, 7.5Msps, Ultra-Low-Power
Analog Front-End
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 3V, OVDD = 1.8V, internal reference (1.024V), CL ≈ 10pF on all digital outputs, fCLK = 7.5MHz (50% duty cycle), Rx ADC input
amplitude = -0.5dBFS, Tx DAC output amplitude = 0dBFS, differential Rx ADC input, differential Tx DAC output, CREFP = CREFN =
CCOM = 0.33µF, unless otherwise noted. CL < 5pF on all aux-DAC outputs. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
Tx DAC DC ACCURACY
Resolution
Integral Nonlinearity
Differential Nonlinearity
SYMBOL
CONDITIONS
N
INL
DNL
Guaranteed monotonic (Note 2)
MIN TYP MAX UNITS
10
Bits
±0.35
LSB
-1 ±0.25 +1
LSB
Residual DC Offset
VOS
Full-Scale Gain Error
Tx DAC DYNAMIC PERFORMANCE
DAC Conversion Rate
In-Band Noise Density
fCLK
ND
Third-Order Intermodulation
IM3
Distortion
Glitch Impulse
-4 ±0.06 +4
mV
Include reference error (peak-to-peak error) -55
+55
mV
(Note 3)
fOUT = 620kHz, fCLK = 7.5MHz
f1 = 620kHz, f2 = 640kHz
-127
78
10
7.5
MHz
dBc/Hz
dBc
pV•s
Spurious-Free Dynamic Range to
Nyquist
SFDR fCLK = 7.5MHz, fOUT = 620kHz
59
77.2
dBc
Total Harmonic Distortion to
Nyquist
THD
fCLK = 7.5MHz, fOUT = 620kHz
-76.1 -59.5
dB
Signal-to-Noise Ratio to Nyquist
SNR
Tx DAC INTERCHANNEL CHARACTERISTICS
I-to-Q Output Isolation
Gain Mismatch Between DAC
Outputs
fCLK = 7.5MHz, fOUT = 620kHz
fOUTX,Y = 500kHz, fOUTX,Y = 620kHz
Measured at DC
61
dB
90
dB
-0.4 ±0.03 +0.4
dB
Phase Mismatch Between DAC
Outputs
Differential Output Impedance
Tx DAC ANALOG OUTPUT
Full-Scale Output Voltage
Output Common-Mode Voltage
fOUT = 620kHz, fCLK = 7.5MHz
VFS
VCOM
Bits CM1 = 0, CM0 = 0 (default)
Bits CM1 = 0, CM0 = 1
Bits CM1 = 1, CM0 = 0
Bits CM1 = 1, CM0 = 1
±0.08
800
D eg r ees
Ω
±400
mV
1.30 1.35 1.48
1.2
V
1.05
0.9
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