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参数资料
| 型号： | AD7777ARZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 5/12页 |
| 文件大小： | 0K |
| 描述： | IC ADC 10BIT 4CH HS 28SOIC |
| 标准包装： | 27 |
| 位数： | 10 |
| 采样率（每秒）： | 378k |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 28-SOIC W |
| 包装： | 管件 |
| 输入数目和类型： | 4 个单端，单极 |
REV. A
–2–
AD7776/AD7777/AD7778–SPECIFICATIONS
CLKIN = 8 MHz; RTN = O V; CREFIN = 10 nF; all specifications TMIN to TMAX unless otherwise noted.)
Parameter
A Versions
1
Units
Conditions/Comments
DC ACCURACY
Resolution
2
10
Bits
Relative Accuracy
±1
LSB max
See Terminology
Differential Nonlinearity
±1
LSB max
No Missing Codes; See Terminology
Bias Offset Error
±12
LSB max
See Terminology
Bias Offset Error Match
10
LSB max
Between Channels, AD7777/AD7778 Only; See Terminology
Plus or Minus Full-Scale Error
±12
LSB max
See Terminology
Plus or Minus Full-Scale Error Match 10
LSB max
Between Channels, AD7777/AD7778 Only; See Terminology
ANALOG INPUTS
Input Voltage Range
All Inputs
VBIAS
± V
SWING
V min/V max
Input Current
+200
A max
VIN = VBIAS
± V
SWING; Any Channel
REFERENCE INPUT
REFIN
1.9/2.1
V min/V max
For Specified Performance
REFIN Input Current
+200
A max
REFERENCE OUTPUT
REFOUT
1.9/2.1
V min/V max
Nominal REFOUT = 2.0 V
DC Output Impedance
5
typ
Reference Load Change
±2
mV max
For Reference Load Current Change of 0 to
±500 A
±5
mV max
For Reference Load Current Change of 0 to
±1 mA
Reference Load Should Not Change During Conversion
Short Circuit Current
3
20
mA max
See Terminology
LOGIC OUTPUTS
DB0–DB9,
BUSY/INT
VOL, Output Low Voltage
0.4
V max
ISINK = 1.6 mA
VOH, Output High Voltage
4.0
V min
ISOURCE = 200
A
Floating State Leakage Current
±10
A max
Floating State Capacitance
3
10
pF max
ADC Output Coding
Twos Complement
LOGIC INPUTS
DB0–DB9,
CS, WR, RD, CLKIN
Input Low Voltage, VINL
0.8
V max
Input High Voltage, VINH
2.4
V min
Input Leakage Current
10
A max
Input Capacitance
3
10
pF max
CONVERSION TIMING
Acquisition Time
4.5 tCLKIN
ns min
See Terminology
5.5 tCLKIN + 70
ns max
Single Conversion
14 tCLKIN
ns max
Double Conversion
28 tCLKIN
ns max
tCLKIN
125/500
ns min/ns max Period of Input Clock CLKIN
tCLKIN High
50
ns min
Minimum High Time for CLKIN
tCLKIN Low
40
ns min
Minimum Low Time for CLKIN
POWER REQUIREMENTS
VCC Range
4.75/5.25
V min/V max
For Specified Performance
ICC, Normal Mode
15
mA max
CS = RD = +5 V, CR8 = 0
ICC, Power-Down Mode
1.5
mA max
CR8 = 1. All Linear Circuitry OFF
Power-Up Time to Operational
Specifications
500
s max
From Power-Down Mode
DYNAMIC PERFORMANCE
See Terminology
Signal to Noise and Distortion
S/(N+D) Ratio
–56
dB min
VIN = 99.88 kHz Full-Scale Sine Wave with fSAMPLING = 380.95 kHz
Total Harmonic Distortion (THD)
–60
dB min
VIN = 99.88 kHz Full-Scale Sine Wave with fSAMPLING = 380.95 kHz
Intermodulation Distortion (IMD)
–75
dB typ
fa = 103.2 kHz, fb = 96.5 kHz with fSAMPLING = 380.95 kHz. Both
Signals Are Sine Waves at Half-Scale Amplitude
Channel-to-Channel Isolation
–90
dB typ
VIN = 100 kHz Full-Scale Sine Wave with fSAMPLING = 380.95 kHz
NOTES
1Temperature range as follows: A = –40
°C to +85°C.
21 LSB = (2
× V
SWING)/1024 = 1.95 mV for VSWING = 1.0 V.
3Guaranteed by design, not production tested.
Specifications subject to change without notice.
(VCC = +5 V
5%; AGND = DGND = O V;
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| AD7777ARZ-REEL | 功能描述:IC ADC 10BIT 4CHAN HS 28SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
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| AD7778AS | 制造商:Analog Devices 功能描述:ADC Single SAR 378ksps 10-bit Parallel 44-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:8-CH 10-BIT ADC IC - Bulk |
| AD7778ASZ | 功能描述:IC ADC 10BIT 8CHAN HS 44-MQFP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
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