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AD7845 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - LC2MOS Complete 12-Bit Multiplying DAC - Analog Devices

भाग संख्या AD7845
समारोह LC2MOS Complete 12-Bit Multiplying DAC
मैन्युफैक्चरर्स Analog Devices 
लोगो Analog Devices लोगो 
पूर्व दर्शन
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<?=AD7845?> डेटा पत्रक पीडीएफ

AD7845 pdf
AD7845–SPECIFICATIONS1
(VDD = +15 V, ؎ 5%, VSS = –15 V, ؎ 5%, VREF = +10 V, AGND = DGND = O V,
VOUT connected to RFB. VOUT load = 2 k, 100 pF. All specifications TMIN to TMAX unless otherwise noted.)
Parameter
J Version
K Version A Version B Version
S Version T Version
Units
Test Conditions/Comments
ACCURACY
Resolution
Relative Accuracy
at +25°C
TMIN to TMAX
Differential Nonlinearity
Zero Code Offset Error
at +25°C
TMIN to TMAX
Offset Temperature Coefficient;
(Offset/Temperature)2
Gain Error
Gain Temperature Coefficient;
(Gain/Temperature)2
12
±1
±1
±1
±2
±3
±5
±3
±6
±6
±7
±2
12 12
±1/2 ±1
±3/4 ±1
±1 ±1
±1 ±2
±2 ±3
±5 ±5
±2 ±3
±6 ±6
±6 ±6
±7 ±7
±2 ±2
12 12
±1/2 ±1
±3/4 ±1
±1 ±1
±1 ±2
±2 ±4
±5 ±5
±2 ±3
±6 ±6
±6 ±6
±7 ±7
±2 ±2
VREF
12
Bits
1 LSB =
= 2.4 mV
212
± 1/2
LSB max
All Grades Are Guaranteed
± 3/4
LSB max
Monotonic over Temperature
±1
LSB max
DAC Register Loaded with
All 0s.
±1 mV max
±3 mV max
±5 µV/°C typ
±2
LSB max
RFB, VOUT Connected
±6
LSB max
RC, VOUT Connected, VREF = +5 V
±6
LSB max
RB, VOUT Connected, VREF = +5 V
±7
LSB max
RA, VOUT Connected, VREF = +2.5 V
±2 ppm of FSR/°C RFB, VOUT Connected
typ
REFERENCE INPUT
Input Resistance, Pin 17
8
8
8
8
16 16 16 16
88
16 16
kmin
kmax
Typical Input Resistance = 12 k
APPLICATION RESISTOR
RATIO MATCHING
0.5
0.5
0.5
0.5
0.5 0 5
% max
Matching Between RA, RB, RC
DIGITAL INPUTS
VIH (Input High Voltage)
VIL (Input Low Voltage)
IIN (Input Current)
CIN (Input Capacitance)2
POWER SUPPLY4
VDD Range
VSS Range
Power Supply Rejection
Gain/VDD
Gain/VSS
IDD
ISS
2.4 2.4 2.4 2.4
0.8 0.8 0.8 0.8
±1 ±1 ±1 ±1
7777
2.4 2.4
0.8 0.8
±1 ±1
77
V min
V max
µA max
pF max
Digital Inputs at 0 V and VDD
14.25/15.75 14.25/15.75 14.25/15.75 14.25/15.75 14.25/15.75 14.25/15.75 V min/V max
–14.25/–15.75 –14.25/–15.75 –14.25/–15.75 –14.25/–15.75 –14.25/–15.75 –14.25/–15.75 V min/V max
± 0.01
± 0.01
6
4
± 0.01
± 0.01
6
4
± 0.01
± 0.01
6
4
± 0.01
± 0.01
6
4
± 0.01
± 0.01
6
4
± 0.01
± 0.01
6
4
% per % max
% per % max
mA max
mA max
VDD = +15 V ± 5%, VREF = –10 V
VSS = –15 V ± 5%.
VOUT Unloaded
VOUT Unloaded
AC PERFORMANCE CHARACTERISTICS
These characteristics are included for Design Guidance and are not subject to test.
DYNAMIC PERFORMANCE
Output Voltage Settling Time 5 5 5 5
5
5
Slew Rate
Digital-to-Analog
Glitch Impulse
11 11 11 11
55 55 55 55
Multiplying Feedthrough
5
5
5
5
Error3
Unity Gain Small Signal
Bandwidth
600 600 600 600
11 11
55 55
55
600 600
Full Power Bandwidth
175
175
175
175
175 175
Total Harmonic Distortion –90 –90 –90 –90
OUTPUT CHARACTERISTICS5
Open Loop Gain
85 85 85 85
–90 –90
85 85
Output Voltage Swing
± 10
± 10
± 10
± 10
Output Resistance
0.2 0.2 0.2 0.2
Short Circuit Current @ +25°C 11 11 11 11
Output Noise Voltage
(0.1 Hz to 10 Hz) @ +25°C 2 2 2 2
f = 10 Hz
250 250 250 250
f = 100 Hz
100 100 100 100
f = 1 kHz
50 50 50 50
f = 10 kHz
50 50 50 50
f = 100 kHz
50 50 50 50
±10 ±10
0.2 0.2
11 11
22
250 250
100 100
50 50
50 50
50 50
NOTES
1Temperature 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.
2Guaranteed by design and characterization, not production tested.
3The metal lid on the ceramic D-24A package is connected to Pin 12 (DGND).
4The device is functional with a power supply of ± 12 V.
5Minimum specified load resistance is 2 k.
Specifications subject to change without notice.
–2–
µs max
V/µs typ
nV–s typ
mV p-p typ
kHz typ
kHz typ
dB typ
dB min
V min
typ
mA typ
µV rms typ
nV/Hz typ
nV/Hz typ
nV/Hz typ
nV/Hz typ
nV/Hz typ
To 0.01% of Full-Scale Range
VOUT Load = 2 k, 100 pF.
DAC Register Alternately Loaded
with All 0s and All 1s. Typically
2.5 µs at 25°C.
VOUT Load = 2 k, 100 pF.
Measured with VREF = 0 V.
DAC Register Alternately Loaded
with All 0s and All 1s.
VREF = ±10 V, 10 kHz Sine Wave
DAC Register Loaded with All 0s.
VOUT, RFB Connected. DAC Loaded
with All 1s VREF = 100 mV p-p
Sine Wave.
VOUT, RFB Connected. DAC Loaded
with All 1s. VREF = 20 V p-p
Sine Wave. RL = 2 k.
VREF = 6 V rms, 1 kHz Sine Wave.
VOUT, RFB Not Connected
VOUT = ±10 V, RL = 2 k
RL = 2 k, CL = 100 pF
RFB, VOUT Connected,
VOUT Shorted to AGND
Includes Noise Due to Output
Amplifier and Johnson Noise
of RFB
REV. B

विन्यास 12 पेज
डाउनलोड[ AD7845 Datasheet.PDF ]


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