Rainbow Electronics MX7847 - Manual (Page 3)

MX7837/MX7847
Complete, Dual, 12-Bit
Multiplying DACs
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PARAMETER SYMBOL MIN TYP MAX UNITS CONDITIONS
±0.01
±0.01
±0.01
Power-Supply Rejection
±0.01
% per %
Voltage-Output Settling
Time
t
S
Settling time to within ±1/2LSB of final DAC value;
DAC latch alternately loaded will all 0s and all 1s
4 µs
Slew Rate 7 V/µs
Digital-to Analog Glitch
Impulse
Q
DAC latch alternately loaded with 01…11 and
10…00
60 nV-s
Channel-to-Channel Isolation
(V
REFA to V OUTB ,
V REFB to V OUTA )
V REF = 20p-p, 10kHz sine wave, Alternate DAC
Latch Loaded with all 0s
-95 dB
Multiplying Feedthrough
Error
-90 dB
Unity-Gain Small-Signal
Bandwidth
THD
1 MHz
Full-Power Bandwidth 125 kHz
Total Harmonic Distortion V REF = 6V RMS , 1kHz, DAC latch loaded with all 1s -88 dB
Digital Crosstalk
Code transition from all 0s to all 1s; see Typical
Operating Characteristics graphs
10 nV-s
Output Noise Voltage at
+25°C (0.1Hz to 10Hz)
Amplifier noise and Johnson noise of R FB 2 µV RMS
V
DD
Range V
DD
11.4 16.5 V
Positive Supply Current I DD 5 10 mA Output unloaded
Negative Supply Current I SS 4 6 mA Output unloaded
V SS Range V SS -11.4 -16.5 V
V REF = 20V p-p S ine wave, DAC latch loaded with
all 1s
V
REF
= 100mV
p-p
sine wave, DAC latch loaded
with all 1s
V REF_ = 20V p-p , 10kHz sine wave, latches loaded
with all 0s
V SS = -12V ±5%, V REF = 8.9V
V DD = 12V ±5%, V REF = -8.9V
V SS = -15V ±5%, V REF = 10V
V DD = 15V ±5%, V REF = -10V
∆
Gain/
∆
V DD
∆
Gain/
∆
V SS
∆
Gain/
∆
V SS
∆
Gain/
∆
V DD
ELECTRICAL CHARACTERISTICS (continued)
(V DD = 11.4V to 16.5V, V
SS
= -11.4V to -16.5V, AGNDA = AGNDB = DGND = 0V, V
REFA
= V
REFB
= +10V, R
L
= 2k
Ω
, C
L
= 100pF,
V
OUT
connected to R
FB
(MX7837), T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Note 1)
Note 2: The analog outputs can swing to within 2.5V of the supply rails. Hence, for good linearity towards full-scale, |V REFA | and |V REFB | must
be at least 2.5V lower than V DD and |V SS |. Tests done with supply voltages below ±12.5V are done with V REFA = V REFB = ±8.9V.
Note 3: Static performance tested at V
DD
= +15V, V
SS
= -15V. Performance over supplies guaranteed by PSRR test.
Note 4: Guaranteed by design.
POWER REQUIREMENTS
AC CHARACTERISTICS