參數(shù)資料
型號： AD7569BRZ
廠商： Analog Devices Inc
文件頁數(shù)： 14/20頁
文件大?。?/td> 0K
描述： IC I/O PORT 8BIT ANALOG 24SOIC
標準包裝： 31
系列： LC²MOS
應用： 模擬 I/O
接口： 總線
電源電壓： 4.75 V ~ 5.25 V
封裝/外殼： 24-SOIC（0.295"，7.50mm 寬）
供應商設備封裝： 24-SOIC W
包裝： 管件
安裝類型： 表面貼裝
ADC SPECIFICATIONS
AD7569
J, A Versions
3
AD7569
AD7669
K, B
AD7569
Parameter
J Version
Versions
S Version
T Version
Units
Conditions/Comments
DC ACCURACY
Resolution
3
8
Bits
Total Unadjusted Error
4
±3
±4
LSB typ
Relative Accuracy
4
±1
±1/2
±1
±1/2
LSB max
Differential Nonlinearity
4
±1
±3/4
±1
±3/4
LSB max
No Missing Codes
Unipolar Offset Error
Typical tempco is 10
V/°C for +1.25 V range; V
SS = 0 V
@ +25
°C
±2
± 1.5
±2
± 1.5
LSB max
TMIN to TMAX
±3
± 2.5
±3
± 2.5
LSB max
Bipolar Zero Offset Error
Typical tempco is 20
V/°C for + 1.25 V range; V
SS = –5 V
@ +25
°C
±3
± 2.5
±3
± 2.5
LSB max
TMIN to TMAX
± 3.5
±3
±4
± 3.5
LSB max
Full-Scale Error
5
VDD = 5 V
@ +25
°C
–4, +0
LSB max
TMIN to TMAX
–5.5, +1.5
–7.5, +2
LSB max
Full Scale/V
DD, TA = +25°C
0.5
LSB max
VIN = +2.5 V; VDD = ± 5%
Full Scale/V
SS, TA = +25°C
0.5
LSB max
VIN = –2.5 V; VSS = ± 5%
DYNAMIC PERFORMANCE
Signal-to-Noise Ratio
4 (SNR)
44
46
44
45
dB min
VIN = 100 kHz full-scale sine wave with fSAMPLING = 400 kHz
6
Total Harmonic Distortion
4 (THD)
48
dB max
VIN = 100 kHz full-scale sine wave with fSAMPLING = 400 kHz
6
Intermodulation Distortion
4 (IMD)
60
dB typ
fa = 99 kHz, fb = 96.7 kHz with fSAMPLING = 400 kHz
Frequency Response
0.1
dB typ
VIN = ± 2.5 V, dc to 200 kHz sine wave
Track/Hold Acquisition Time
7
200
300
ns typ
ANALOG INPUT
Input Voltage Ranges
Unipolar
0 to +1.25/ +2.5
Volts
VDD = +5 V; VSS = 0 V
Bipolar
±1.25/±2.5
Volts
VDD = +5 V; VSS = –5 V
Input Current
±300
A max
See equivalent circuit Figure 5
Input Capacitance
10
pF typ
LOGIC INPUTS
CS
, RD, ST, CLK, RESET, RANGE
Input Low Voltage, VINL
0.8
V max
Input High Voltage, VINH
2.4
V min
Input Capacitance
8
10
pF max
CS
, RD, ST, RANGE, RESET
Input Leakage Current
10
A max
V IN = 0 to VDD
CLK
Input Current
IINL
–1.6
mA max
VIN = 0 V
IINH
40
A max
VIN = VDD
LOGIC OUTPUTS
DB0–DB7, INT, BUSY
VOL, Output Low Voltage
0.4
V max
ISINK = 1.6 mA
VOH, Output High Voltage
4.0
V min
ISOURCE = 200 A
DB0–DB7
Floating State Leakage Current
10
A max
Floating State Output Capacitance
8
10
pF max
Output Coding (Single Supply)
Binary
Output Coding (Dual Supply)
2s Complement
CONVERSION TIME
With External Clock
2
s max
fCLK = 5 MHz
With Internal Clock, TA = +25°C
1.6
s min
Using recommended clock components shown in Figure 21.
2.6
s max
Clock frequency can be adjusted by varying RCLK.
POWER REQUIREMENTS
As per DAC Specifications
NOTES
1
Except where noted, specifications apply for all ranges including bipolar ranges with dual supply operation.
2Temperature ranges are as follows: J, K versions; 0
°C to +70°C
A, B versions; –40
°C to +85°C
S, T versions; –55
°C to +125°C
31 LSB = 4.88 mV for 0 V to +1.25 V range, 9.76 mV for 0 V to +2.5 V and
±1.25 V ranges and 19.5 mV for +2.5 V range.
4See Terminology.
5Includes internal voltage reference error and is calculated after offset error has been adjusted out. Ideal unipolar last code transition occurs at (FS – 3/2 LSB). Ideal bipolar last code transition occurs at
(FS/2 – 3/2 LSB).
6Exact frequencies are 101 kHz and 384 kHz to avoid harmonics coinciding with sampling frequency.
7Rising edge of BUSY to falling edge of ST. The time given refers to the acquisition time, which gives a 3 dB degradation in SNR from the tested figure.
8Sample tested at +25
°C to ensure compliance.
Specifications subject to change without notice.
(VDD = +5 V
5%; VSS
1 = RANGE = AGND
DAC = AGNDDAC = DGND = 0 V; fCLK = 5 MHz external unless other-
wise noted. All specifications TMIN to TMAX unless otherwise noted.) Specifications apply to Mode 1 interface.
AD7569/AD7669
–3–
REV. B
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