AD1849 查看數據表（PDF） - Analog Devices
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AD1849 Datasheet PDF : 28 Pages
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AD1849K–SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
STANDARD TEST CONDITIONS UNLESS OTHERWISE NOTED
Temperature
Digital Supply (VDD)
Analog Supply (VCC)
Clock (SCLK)
Master Mode
Word Rate (FS)
Input Signal
Analog Output Passband
VIH
VIL
External Load Impedance
(Line 0)
External Load Impedance
(Line 1)
External Load Capacitance
(Line 0, 1)
25
°C
5.0
V
5.0
V
256
FS
256 Bits per Frame
48
kHz
1
kHz
20 Hz to 20 kHz
2.4
V
0.8
V
10
kΩ
48
Ω
100
pF
DAC Input Conditions
0 dB Attenuation
Full-Scale Digital Inputs
16-Bit Linear Mode
OLB = 1
ADC Input Conditions
0 dB PGA Gain
–3.0 dB Relative to Full Scale
Line Input
16-Bit Linear Mode
All tests are performed on all ADC and DAC channels.
ANALOG INPUT
Min
Input Voltage*
(RMS Values Assume Sine Wave Input)
Line and Mic with 0 dB Gain
Mic with 20 dB Gain
Input Capacitance
0 94
2.66
0.094
0.266
*Accounts for Sum of Worst Case Reference Errors and Worst Case Gain Errors.
PROGRAMMABLE GAIN AMPLIFIER—ADC
Min
Step Size (0 dB to 22.5 dB)
1.3
(All Steps Tested, –30 dB Input)
PGA Gain Range*
Line and Mic with 0 dB Gain
–0.2
Mic with 20 dB Gain
19.8
Typ
0.99
2.80
0.099
0.280
Typ
1.5
Max
1.04
2.94
0.104
0.294
15
Max
1.7
+22.7
42.7
DIGITAL DECIMATION AND INTERPOLATION FILTERS*
Min
Passband
Passband Ripple
Transition Band
Stopband
Stopband Rejection
Group Delay
Group Delay Variation Over Passband
0
0.45 × FS
≥0.55 × FS
74
Max
0.45 × FS
± 0.1
0.55 × FS
30/FS
0.0
Unit
V rms
V p-p
V rms
V p-p
pF
Unit
dB
dB
dB
Unit
Hz
dB
Hz
Hz
dB
µs
–2–
REV. A
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