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参数资料
型号： AD73422BB-40
厂商： ANALOG DEVICES INC
元件分类： 数字信号处理
英文描述： Dual Low Power CMOS Analog Front End with DSP Microcomputer
中文描述： 24-BIT, 52 MHz, MIXED DSP, PBGA119
封装： PLASTIC, BGA-119
文件页数： 3/36页
文件大小： 396K
代理商： AD73422BB-40
REV. 0
–3–
AD73422
Parameter
Min
Typ
Max
Units
Test Conditions
DAC SPECIFICATIONS
Maximum Voltage Output Swing
2
Single-Ended
1.578
–2.85
3.156
3.17
V p-p
dBm
V p-p
dBm
PGA = 6 dB
Max Output = (1.578/1.25)
×
V
REFCAP
PGA = 6 dB
Max Output = 2
×
((1.578/1.25)
×
V
REFCAP
)
Differential
Nominal Voltage Output Swing (0 dBm0)
Single-Ended
1.0954
–6.02
2.1909
0
1.2
V p-p
dBm
V p-p
dBm
V
dB
dB
PGA = 6 dB
Differential
PGA = 6 dB
Output Bias Voltage
Absolute Gain
Gain Tracking Error
Signal to (Noise + Distortion) at 0 dBm0
PGA = 6 dB
Total Harmonic Distortion at 0 dBm0
PGA = 6 dB
Intermodulation Distortion
Idle Channel Noise
Crosstalk, DAC-to-ADC
REFOUT Unloaded
1.0 kHz, 0 dBm0; Unloaded
1.0 kHz, +3 dBm0 to –50 dBm0
–0.85 +0.4
+0.85
±
0.1
62.5
77
dB
300 Hz to 3400 Hz; f
SAMP
= 64 kHz
–80
–85
–85
–90
–62.5
dB
dB
dBm0
dB
300 Hz to 3400 Hz; f
SAMP
= 64 kHz
PGA = 0 dB
PGA = 0 dB
ADC Input Level: AGND;
DAC Output Level: 1.0 kHz, 0 dBm0;
Input Amplifiers Bypassed
Input Amplifiers Included in Input Channel
DAC1 Output Level: AGND;
DAC2 Output Level: 1.0 kHz, 0 dBm0
Input Signal Level at AVDD and DVDD
Pins: 1.0 kHz, 100 mV p-p Sine Wave
Interpolator Bypassed
–77
–100
dB
dB
DAC-to-DAC
Power Supply Rejection
–65
dB
Group Delay
4, 5
25
50
+20
μ
s
μ
s
mV
Output DC Offset
2, 7
Minimum Load Resistance, R
L2, 8
Single-Ended
4
Differential
Maximum Load Capacitance, C
L2, 8
Single-Ended
4
Differential
–20
+60
600
600
500
100
pF
pF
LOGIC INPUTS
V
INH
, Input High Voltage
V
INL
, Input Low Voltage
I
IH
, Input Current
C
IN
, Input Capacitance
4
LOGIC OUTPUT
V
OH
, Output High Voltage
V
OL
, Output Low Voltage
Three-State Leakage Current
DVDD – 0.8
0
–10
DVDD V
0.8
+10
24
V
μ
A
pF
12
DVDD – 0.4
0
–10
DVDD V
0.4
+10
|IOUT|
≤
100
μ
A
|IOUT|
≤
100
μ
A
V
μ
A
POWER SUPPLIES
AVDD
DVDD
I
DD10
3.0
3.0
3.6
3.6
V
V
See Table I
NOTES
Operating temperature range is as follows: –20
°
C to +85
°
C; therefore, T
MIN
= –20
°
C and T
MAX
= +85
°
C.
2
Test conditions: Input PGA set for 0 dB gain, Output PGA set for 6 dB gain, no load on analog outputs (unless otherwise noted).
3
At input to sigma-delta modulator of ADC.
4
Guaranteed by design.
5
Overall group delay will be affected by the sample rate and the external digital filtering.
6
The ADC’s input impedance is inversely proportional to DMCLK and is approximated by: (3.3
×
10
11
)/DMCLK.
7
Between VOUTP1 and VOUTN1 or between VOUTP2 and VOUTN2.
8
At VOUT output.
9
Frequency responses of ADC and DAC measured with input at audio reference level (the input level that produces an output level of –10 dBm0), with 38 dB pream-
plifier bypassed and input gain of 0 dB.
10
Test Conditions: no load on digital inputs, analog inputs ac-coupled to ground, no load on analog outputs.
Specifications subject to change without notice.
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