參數(shù)資料
型號(hào)： DAC250Y
英文描述： Dual, 12-Bit, 125MSPS DIGITAL-TO-ANALOG CONVERTER
中文描述： 雙通道，12位，125Msps數(shù)字模擬轉(zhuǎn)換器
文件頁(yè)數(shù)： 3/17頁(yè)
文件大?。?/td> 389K
代理商： DAC250Y
DAC2902
SBAS167A
3
ELECTRICAL CHARACTERISTICS
(Cont.)
T
MIN
to T
MAX
, +V
A
= +5V, +V
D
= +3.3V, differential transformer coupled output, 50y doubly terminated, unless otherwise noted. Independant Gain Mode.
DYNAMIC PERFORMANCE (Cont.)
Signal-to-Noise Ratio (SNR)
f
OUT
= 5.02MHz, f
CLOCK
= 50MHz
Signal-to-Noise and Distortion (SINAD)
f
OUT
= 5.02MHz, f
CLOCK
= 50MHz
Channel Isolation
f
OUT
= 1MHz, f
CLOCK
= 52MSPS
f
OUT
= 20MHz, f
CLOCK
= 125MSPS
Output Settling Time
(2)
Output Rise Time
(2)
Output Fall Time
(2)
Glitch Impulse
0dBFS Output
68
dBc
0dBFS Output
67
dBc
85
77
30
2
2
2
dBc
dBc
ns
ns
ns
pV-s
to 0.1%
10% to 90%
10% to 90%
DC ACCURACY
Full-Scale Output Range
(3)
(FSR)
Output Compliance Range
Gain Error—Full-Scale
Gain Error
Gain Matching
Gain Drift
Offset Error
Offset Drift
Power-Supply Rejection, +V
A
Power-Supply Rejection, +V
D
Output Noise
All Bits HIGH, I
OUT
2
20
mA
V
%FSR
%FSR
%FSR
ppmFSR/°C
%FSR
ppmFSR/°C
%FSR/V
%FSR/V
pA/
Hz
pA/Hz
k
pF
–1.0
–5
–2.5
–2.0
+1.25
+5
+2.5
+2.0
With Internal Reference
With External Reference
With Internal Reference
With Internal Reference
With Internal Reference
With Internal Reference
+5V, ±10%
+3.3V, ±10%
I
OUT
= 20mA, R
LOAD
= 50
I
OUT
= 2mA
±1
±1
0.5
±50
–0.02
+0.02
±0.2
–0.2
–0.025
+0.2
+0.025
50
30
200
6
Output Resistance
Output Capacitance
I
OUT
, I
OUT
to Ground
REFERENCE/CONTROL AMP
Reference Voltage
Reference Voltage Drift
Reference Output Current
Reference Multiplying Bandwidth
Input Compliance Range
+1.18
+1.25
±50
100
0.3
+1.31
V
ppmFSR/°C
nA
MHz
V
+0.5
+1.25
DIGITAL INPUTS
Logic Coding
Logic High Voltage, V
IH
Logic Low Voltage, V
IL
Logic High Voltage, V
IH
Logic Low Voltage, V
IL
Logic High Current
,
I
IH(4)
Logic Low Current
Input Capacitance
Straight Binary
5
0
3
0
±10
±10
5
+V
D
= +5V
+V
D
= +5V
+V
D
= 3.3V
+V
D
= 3.3V
+V
D
= 3.3V
+V
D
= 3.3V
3.5
V
V
V
V
μA
μA
pF
1.2
2
0.8
POWER SUPPLY
Supply Voltages
+V
A
+V
D
Supply Current
I
VA(5)
I
VA(5)
I
VD(5)
I
VD(6)
Power Dissipation
(5)
Power Dissipation
(6)
Power Dissipation
(5)
Power Dissipation
Thermal Resistance, TQFP-48
θ
JA
θ
JC
+3.0
+3.0
+5
+3.3
+5.5
+5.5
V
V
V
A
= +5V, l
OUT
= 20mA
Power-Down Mode
59
1.7
4.2
15.5
310
345
130
23
64
3
7
18
345
380
mA
mA
mA
mA
mW
mW
mW
mW
V
A
= +5V, V
D
= 3.3V, l
OUT
= 20mA
V
A
= +5V, V
D
= 3.3V, l
OUT
= 20mA
V
A
= +5V, V
D
= 3.3V, l
OUT
= 2mA
Power-Down Mode
38
60
13
°C/W
°C/W
TEMPERATURE RANGE
Specified
Operating
Ambient
Ambient
–40
–40
+85
+85
°C
°C
NOTES: (1) At output l
, while driving a virtual ground. (2) Measured single-ended into 50y load. (3) Nominal full-scale output current is 32 I
; see Application
section for details. (4) Typically 45μA for the PD pin, which has an internal pull-down resistor. (5) Measured at f
CLOCK
= 25MSPS and f
OUT
= 1MHz. (6) Measured
at f
CLOCK
= 100MSPS and f
OUT
= 40MHz.
DAC2902Y
TYP
PARAMETER
CONDITIONS
MIN
MAX
UNITS
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