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參數資料
| 型號： | AD7724AST |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | Dual CMOS Modulators |
| 中文描述： | 2-CH 1-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PQFP48 |
| 封裝： | PLASTIC, LQFP-48 |
| 文件頁數： | 2/14頁 |
| 文件大?。?/td> | 552K |
| 代理商： | AD7724AST |
REV. A
–2–
AD7724–SPECIFICATIONS
1
(AVDD = 5 V
6
5%; DVDD = 5 V
6
5%, DVDD1 = 3 V
6
5%; AGND = DGND = 0 V,
f
MCLK
= 13 MHz ac-coupled sine wave, REF2A = REF2B=2.5 V; T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
Parameter
A Version
Unit
Test Conditions/Comments
STATIC PERFORMANCE
Integral Nonlinearity
Offset Error
Gain Error
2
Offset Error Drift
Gain Error Drift
Unipolar Mode
Bipolar Mode
When Tested with Ideal FIR Filter as in Figure 1
±
0.003
±
0.24
±
0.6
±
37.69
% FSR typ
% FSR typ
% FSR typ
μ
V/
°
C typ
REF2 Is an Ideal Reference, REF1 = AGND
±
37.69
±
18.85
μ
V/
°
C typ
μ
V/
°
C typ
ANALOG INPUTS
Signal Input Span (VIN(+) – VIN(–))
Bipolar Mode
Unipolar Mode
Maximum Input Voltage
Minimum Input Voltage
Input Sampling Capacitance
Input Sampling Rate
Differential Input Impedance
±
V
REF2
/2
0 to V
REF2
AVDD
0
2
2 f
MCLK
10
9
/(8 f
MCLK
)
V max
V max
V
V
pF typ
MHz
k
typ
BIP = V
IH
BIP = V
IL
REFERENCE INPUTS
REF1 Output Voltage
REF1 Output Voltage Drift
REF1 Output Impedance
Reference Buffer Offset Voltage
Using Internal Reference
REF2 Output Voltage
REF2 Output Voltage Drift
Using External Reference
REF2 Input Impedance
External Reference Voltage Range
DYNAMIC SPECIFICATIONS
3
Bipolar Mode
2.32 to 2.68
60
4
±
12
V min/max
ppm/
°
C typ
k
typ
mV max
Offset Between REF1 and REF2
2.32 to 2.68
60
V min/max
ppm/
°
C typ
REF1 = AGND
10
9
/(16 f
MCLK
)
2.32 to 2.68
k
typ
V min/max
Applied to REF1 or REF2
When Tested with Ideal FIR Filter as in Figure 1
BIP = V
IH
, V
CM
= 2.5 V, VIN(+) = VIN(–) = 1.25 V p-p
or VIN(–) = 1.25 V, VIN(+) = 0 V to 2.5 V
Input BW = 0 kHz–94.25 kHz
Signal-to-(Noise + Distortion)
90
86
–90
–90
dB typ
dB min
dB max
dB max
Total Harmonic Distortion
Spurious Free Dynamic Range
Unipolar Mode
Signal-to-(Noise + Distortion)
Total Harmonic Distortion
Spurious Free Dynamic Range
Intermodulation Distortion
AC CMRR
Input BW = 0 kHz–94.25 kHz
Input BW = 0 kHz–94.25 kHz
BIP = V
IL
, VIN(–) = 0 V, VIN(+) = 0 V to 2.5 V
Input BW = 0 kHz–94.25 kHz
Input BW = 0 kHz–101.556 kHz
Input BW = 0 kHz–101.556 kHz
88
–90
–90
–93
96
dB typ
dB typ
dB typ
dB typ
dB typ
VIN(+) = VIN(–) = 2.5 V p-p, V
CM
= 1.25 V to
3.75 V, 20 kHz
CLOCK
Square Wave
4
MCLK Duty Ratio
V
MCLKH
, MCLK High Voltage
V
MCLKL
, MCLK Low Voltage
Sine Wave
XTAL1 Voltage Swing
45 to 55
4
0.4
% max
V min
V max
For Specified Operation
MCLK Uses CMOS Logic
0.4
4
V p-p min
V p-p max
XTAL_OFF Tied Low
LOGIC INPUTS
V
IH
, Input High Voltage
V
IL
, Input Low Voltage
I
INH
, Input Current
C
IN
, Input Capacitance
2.4
0.8
10
10
V min
V max
μ
A max
pF max
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相關代理商/技術參數 |
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|---|---|
| AD7724AST-REEL | 制造商:Analog Devices 功能描述:ADC Dual Delta-Sigma 30Msps 15-bit Serial 48-Pin LQFP T/R |
| AD7724ASTZ | 功能描述:IC MOD SIGMA-DELTA DUAL 48LQFP RoHS:是 類別:集成電路 (IC) >> 數據采集 - ADCs/DAC - 專用型 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 類型:數據采集系統（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數據接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| AD7724ASTZ-REEL | 功能描述:IC MOD SIGMA-DELTA DUAL 48LQFP RoHS:是 類別:集成電路 (IC) >> 數據采集 - ADCs/DAC - 專用型 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 類型:數據采集系統（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數據接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| AD7725 | 制造商:AD 制造商全稱:Analog Devices 功能描述:16-Bit 900 kSPS ADC with a Programmable Postprocessor |
| AD7725BS | 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 900ksps 16-bit Parallel/Serial 44-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:16-BIT PROGRAMMABLE SIGMA-DELTA ADC I.C. - Bulk 制造商:Analog Devices 功能描述:IC 16BIT ADC SMD 7725 MQFP44 |
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