Datasheet

MCP4902/4912/4922
DS22250A-page 6  2010 Microchip Technology Inc.
Multiplying Mode
-3 dB Bandwidth
f
VREF
— 450 — kHz V
REF
= 2.5V ±0.1 Vp-p,
Unbuffered, G = 1x
f
VREF
— 400 — kHz V
REF
= 2.5V ±0.1 Vp-p,
Unbuffered, G = 2x
Multiplying Mode – Total
Harmonic Distortion
THD
VREF
———dBV
REF
= 2.5V ±0.1Vp-p,
Frequency = 1 kHz
Output Amplifier
Output Swing V
OUT
— 0.01 to
V
DD
– 0.04
— V Accuracy is better than 1 LSb for
V
OUT
= 10 mV to (V
DD
– 40 mV)
Phase Margin m — 66 — degrees
Slew Rate SR — 0.55 — V/µs
Short Circuit Current I
SC
—17—mA
Settling Time t
settling
— 4.5 — µs Within 1/2 LSb of final value from
1/4 to 3/4 full-scale range
Dynamic Performance (Note 2)
DAC to DAC Crosstalk — 10 — nV-s
Major Code Transition
Glitch
— 45 — nV-s 1 LSb change around major carry
(0111...1111 to
1000...0000)
Digital Feedthrough — 10 — nV-s
Analog Crosstalk — 10 — nV-s
ELECTRICAL CHARACTERISTIC WITH EXTENDED TEMPERATURE (CONTINUED)
Electrical Specifications: Unless otherwise indicated, V
DD
= 5V, V
SS
= 0V, V
REF
= 2.048V, Output Buffer Gain (G) = 2x, R
L
= 5 k to
GND, C
L
= 100 pF. Typical values are at +125°C by characterization or simulation.
Parameters Sym Min Typ Max Units Conditions
Note 1: Guaranteed monotonic by design over all codes.
2: This parameter is ensured by design, and not 100% tested.