Rainbow Electronics MX7847 - Manual (Page 4)

MX7837/MX7847
Complete, Dual, 12-Bit
Multiplying DACs
4 _______________________________________________________________________________________
__________________________________________Typical Operating Characteristics
(T A = +25°C, V
DD
= 15V, V
SS
= -15V, R
L
= 2k
Ω
, C
L
= 100pF, unless otherwise noted)
25
0
10 1k 10k
OUTPUT VOLTAGE SWING
vs. RESISTIVE LOAD
10
20
LOAD RESISTANCE ( Ω )
V
OUT
(V
p-p
)
100
15
5
V
REF
= 20V
p-p
at 1kHz
0
10 100k
NOISE SPECTRAL DENSITY
100
300
FREQUENCY (Hz)
NOISE SPECTRAL DENSITY (nV/ Hz)
200
100 1k 10k
V REF = 0V
DAC CODE = 11...111
GAIN = -1
5
-25
100 10k 10M
SMALL-SIGNAL FREQUENCY RESPONSE
FREQUENCY (Hz)
GAIN (dB)
-5
0
-10
-15
-20
1k 100k 1M
V REF = 100mV p-p
DAC CODE = 11...111
GAIN = -1
-35
-85
1k 100k
MULTIPLYING FEEDTHROUGH ERROR
-75
FREQUENCY (Hz)
ATTENUATION (dB)
-65
-50
-45
-40
-55
-60
-70
-80
10k 1M
V REFA = 20V p-p
V REFB = AGNDB
DAC CODE = 00...00
-94
-106
100 1k 10k
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY (BANDWIDTH = 80kHz)
-102
FREQUENCY (Hz)
THD (dB)
-100
-98
-96
-104
V REF = 6V RMS
DAC CODE = 111...111
-60
-100
100 10k 100k
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY (BANDWIDTH > 500kHz)
-75
-65
FREQUENCY (Hz)
THD (dB)
1k
-70
-90
-80
-85
-95
V
REF
= 6V
RMS
DAC CODE = 111...111
PARAMETER
MX78_7J/K/A/B
MIN MAX
SYMBOL
MX78_7S/T
MIN MAX
UNITS
Address to WR SetupTime t 6 MX7837 only 15 15 ns
Address to WR Hold Time t 7 MX7837 only 15 15 ns
LDAC Pulse Width t
8
MX7837 only 80 80 ns
CONDITIONS
CS to WR Hold Time
0
0
CS to WR Setup Time t 1 0 ns
t 2 0 ns
WR Pulse Width t 3 80 80 ns
Data to WR Setup Time t
4
80 80 ns
Data to WR Hold Time t
5
10 10 ns
TIMING CHARACTERISTICS
(V DD = 11.4V to 16.5V, V
SS
= -11.4V to -16.5V, AGNDA = AGNDB = DGND = 0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Note 5)
Note 5: All input signals are specified with t R = t F
≤
5ns. Logic swing is 0V to 5V.