AD7729–SPECIFICATIONS1 Parameter AD7729A Units Test Conditions/Comments REFERENCE REFCAP
參數(shù)資料
型號: AD7729ARU-REEL
廠商: Analog Devices Inc
文件頁數(shù): 9/16頁
文件大?。?/td> 0K
描述: IC ADC 15BIT DUAL W/DAC 28-TSSOP
標準包裝: 2,500
類型: ADC,DAC
分辨率(位): 15 b
采樣率(每秒): 270.8k
數(shù)據(jù)接口: 串行
電壓電源: 模擬和數(shù)字
電源電壓: 2.7 V ~ 3.3 V
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 28-TSSOP(0.173",4.40mm 寬)
供應商設備封裝: 28-TSSOP
包裝: 帶卷 (TR)
–2–
REV. 0
AD7729–SPECIFICATIONS1
Parameter
AD7729A
Units
Test Conditions/Comments
REFERENCE
REFCAP
Absolute Voltage, VREFCAP
1.3
± 5%
V min/max
REFCAP TC
50
ppm/
°C typ
0.1
F Capacitor Required from REFCAP to AGND
REFOUT
Absolute Voltage, VREFOUT
1.3
± 10%
V min/max
REFOUT TC
50
ppm/
°C typ
0.1
F Capacitor Required from REFOUT to AGND
ADC CHANNEL SPECIFICATIONS
RxON = 1
Resolution
15
Bits
ADC Signal Range
2 VREFCAP
V p-p
VBIAS
VREFCAP/2 to (AVDD – VREFCAP/2)
Volts
Differential
VREFCAP to (AVDD – VREFCAP)
Volts
Single-Ended
Differential Signal Range
VBIAS ± VREFCAP/2
V min/max
For Both Positive and Negative Analog Inputs
Single-Ended Signal Range
VBIAS ± VREFCAP
V min/max
For Positive Analog Inputs; Negative Analog Inputs = VBIAS
Input Sample Rate
13
MSPS
Output Word Rate
270.83
kHz
DC Accuracy
Precalibration Offset Error
±45
mV typ
Post Calibration Offset Error
±10
mV max
Post Calibration Offset Error TC
50
V/°C typ
TC = Temperature Coefficient
Input Resistance (DC)
1.23
M
typ
Input Capacitance
10
pF typ
Dynamic Specifications
Input Frequency = 67.7 kHz
Dynamic Range
67
dB typ
Signal to (Noise + Distortion)
64
dB min
Gain Error
±1
dB max
Input Frequency = 67.7 kHz, wrt 1.3 V
±0.5
dB max
Input Frequency = 67.7 kHz, wrt VREFCAP
Gain Match Between Channels
±0.2
dB max
Filter Settling Time
47
s typ
Frequency Response
Does Not Include Input Antialias RC Circuit
0 kHz –70 kHz
±0.05
dB max/min
85 kHz
–1
dB max
96 kHz
–3.0
dB max
135 kHz
–55
dB max
>170 kHz
–55
dB max
Absolute Group Delay
23
s typ
Group Delay Between Channels
(0 kHz–96 kHz)
5
ns typ
Coding
Twos Complement
AUXILIARY CONVERTER2
Resolution
10
Bits
Output Range
Code 000
2/32
× V
REFCAP
V
Offset Error
±35
mV max
Code 3FF
2 VREFCAP
V
Gain Error
–60
mV min
+100
mV max
DC Accuracy
Maximum Output for Specified Accuracy = AVDD –
0.2 V or 2.6 V, Whichever Is Lower
Integral Nonlinearity
±4
LSB max
Differential Nonlinearity
±2
LSB max
Guaranteed Monotonic to 9 Bits
Update Rate
540
kHz max
Load Resistance
10
k
min
See Figure 1
Load Capacitance
50
pF max
See Figure 1
ISINK
50
A typ
Full-Scale Settling Time
4
s typ
LSB Settling Time
2
s typ
Coding
Binary
(AVDD1 = AVDD2 = +3 V
10%; DVDD1 = DVDD2 = +3 V
10%; DGND = AGND =
0 V, fCLK = 13 MHz; RxPOWER1 = 0; RxPOWER0 = 1; MCLKDIV = 0; TA = TMIN to TMAX unless otherwise noted)
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