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PDF CS4373A Data sheet ( Hoja de datos )
| Número de pieza | CS4373A | |
| Descripción | High-performance Test DAC | |
| Fabricantes | Cirrus Logic | |
| Logotipo |  |
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CS4373A
Low-power, High-performance ∆Σ Test DAC
Features
Description
z Digital ∆Σ Input from CS5376A Digital Filter
z Selectable Differential Analog Outputs
• Precision output (OUT±) for electronics tests
• Buffered output (BUF±) for sensor tests
z Multiple AC and DC Operational Modes
• Signal bandwidth: DC to 100 Hz
• Max AC amplitude: 5 VPP differential
• Max DC amplitude: + 2.5 Vdc differential
z Selectable Attenuation for CS3301A / CS3302A
• 1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64
z Outstanding Performance
• AC (OUT): -116 dB THD typical, -112 dB max
• AC (BUF): -108 dB THD typical, -90 dB max
• DC absolute accuracy: 0.4% typical, 1% max
z Low Power Consumption
• AC modes / DC modes: 40 mW / 20 mW
• Sleep mode / Power Down: 1 mW / 10 µW
z Extremely Small Footprint
• 28-pin SSOP package, 8 mm x 10 mm
z Bipolar Power Supply Configuration
• VA+ = +2.5 V;VA- = -2.5 V; VD = +3.3 V
The CS4373A is a high-performance, differential output
digital-to-analog converter (DAC) with programmable at-
tenuation and multiple operational modes. AC test
modes measure system dynamic performance through
THD and CMRR tests while DC test modes are for gain
calibration and pulse tests.
The CS4373A is driven by a ∆Σ digital bit stream from the
CS5376A digital filter test bit stream (TBS) generator. It
has two sets of differential analog outputs, OUT and
BUF, to simplify system design as dedicated outputs for
testing the electronics channel and for in-circuit sensor
tests. Analog output attenuation is selected by simple pin
settings and matches the gain of the
CS3301A / CS3302A differential amplifiers for full-scale
testing at all gain ranges.
The CS4373A test DAC provides self-test and precision
calibration capability for high-resolution, low-frequency
multi-channel measurement systems designed from
CS3301A / CS3302A
differential
amplifiers,
CS5371A / CS5372A ∆Σ modulators and the CS5376A
digital filter.
ORDERING INFORMATION
See page 34.
VA+ MODE(0, 1, 2)
ATT(0, 1, 2)
VD
TDATA
VREF+
VREF-
24-Bit ∆Σ
DAC
VA- CAP+ CAP-
Attenuator
OUT+
OUT-
BUF+
BUF-
Clock
Generator
MCLK
MSYNC
GND
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2006
(All Rights Reserved)
DEC ‘06
DS699F2
1 page  
CS4373A
TEMPERATURE CONDITIONS
Parameter
Symbol Min Typ Max
Unit
Ambient Operating Temperature
TA -40 - +85
ºC
Storage Temperature Range
TSTG
-65
-
150
ºC
Allowable Junction Temperature
TJCT
-
- 125
ºC
Junction to Ambient Thermal Impedance (4-layer PCB)
ΘJA
-
65
-
ºC / W
ABSOLUTE MAXIMUM RATINGS
Parameter
DC Power Supplies
Positive Analog
Negative Analog
Digital
Analog Supply Differential
(VA+) - (VA-)
Digital Supply Differential
(VD) - (VA-)
Input Current, Power Supplies
(Note 5)
Input Current, Any Pin Except Supplies
(Note 5)
Output Current
(Note 5)
Power Dissipation
Analog Input Voltages
Digital Input Voltages
Symbol
VA+
VA-
VD
VADIFF
VDDIFF
IIN
IIN
IOUT
PDN
VINA
VIND
Min
-0.5
-6.8
-0.5
-
-
-
-
-
-
(VA-) - 0.5
-0.5
Max
6.8
0.5
6.8
6.8
7.6
±50
±10
±25
500
(VA+) + 0.5
(VD) + 0.5
Parameter
V
V
V
V
V
mA
mA
mA
mW
V
V
WARNING: Operation at or beyond these limits may result in permanent damage to the device.
Normal operation is not guaranteed at these extremes.
Notes: 5. Transient currents up to ±100 mA will not cause SCR latch-up.
DS699F2
5
5 Page 
CS4373A
AC COMMON MODE 6
Parameter
Symbol
AC Common Mode Characteristics
Full-scale Common Mode AC Output
(Note 20)
1/1 VCMFS
1/2
1/4
1/8
1/16
1/32
Full-scale Bandwidth
Impulse Amplitude
AC Common Mode Accuracy
(Note 8) VCMBW
(Note 8, 10) VCMIMP
Common Mode Match (OUT± Unloaded)
(Note 17, 20)
VCMCMM
Common Mode Match (BUF± Unloaded, 1 kΩ Load)
(Note 16, 17, 20)
VCMCMM
Full-scale Accuracy
(Note 3, 11)
1/1 VACABS
Relative Accuracy
(Note 12, 20)
1/2
1/4
1/8
1/16
1/32
VACREL
Full-scale Drift
DC Common Mode Characteristics
(Note 14) VCMTC
Common Mode Mean
Common Mode Mean Drift
(Note 21) VCMCM
(Note 14, 21) VCMCMTC
Min Typ Max
- 2.5 -
- 1.25 -
- 625 -
- 312.5 -
- 156.25 -
- 78.125 -
- - 100
- - -20
- -115 -105
- -95 -85
- - 0.3 -
- - 0.1 -
- - 0.5 -
- - 1.0 -
- -2.0 -
- -5.0 -
- 25 -
- (VA-)+2.35 -
- 300 -
Unit
Vpp
Vpp
mVpp
mVpp
mVpp
mVpp
Hz
dBfs
dB
dB
%FS
%
%
%
%
%
µV/°C
V
µV/°C
Notes: 20. No AC common mode signal is output at 1/64 attenuation due to the attenuator architecture.
21. Common mode mean is defined as [(SIGmax) + (SIGmin)] / 2.
DS699F2
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CS4373A.PDF ] | |
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